Rev. 0.8 2/12 Copyright © 2016 by Silicon Labo ratories Si47xx-EVB
Si47xx-EVB
Si47XX EVALUATION BOARD USER’S GUIDE
1. Introduction
Thank you for purchasing the Silicon Laboratories, Inc. Si47xx Evaluation Board (EVB). The EVB and associated
software have been designed to speed up the overall development process. We look forward to working with you,
and have posted support articles, answers to frequently asked questions, and application notes at
www.mysilabs.com. Table 1 describes all of the available products and features in the Si47xx family.
Table 1. Product Family Function
Part
Number General Description
FM Transmitter
FM Receiver
AM Receiver
SW/LW Receiver
WB Receiver
RDS
High Performance RDS
RPS
SAME
Digital Input
Digital Output
Embedded FM antenna
AEC-Q100 Qualified
Package Size (mm)
Si4700 FM Receiver 4x4
Si4701 FM Receiver with RDS  4x4
Si4702 FM Receiver 3x3
Si4703 FM Receiver with RDS  3x3
Si4704 FM Receiver 
3x3
Si4705 FM Receiver with RDS 
2 3x3
Si47061High Performance RDS Receiver 
3x3
Si47071WB Receiver with SAME  3x3
Si4708 FM Receiver 2.5x2.5
Si4709 FM Receiver with RDS  2.5x2.5
Si4710 FM Transmitter 
3x3
Si4711 FM Transmitter with RDS 
3x3
Si4712 FM Transmitter with RPS  3x3
Si4713 FM Transmitter with RDS & RPS  3x3
Si4720 FM Transceiver  3x3
Si4721 FM Transceiver with RDS   3x3
Si4730 AM/FM Receiver  3x3
Si4731 AM/FM Receiver with RDS 
23x3
Notes:
1. Si4706, Si4707, and Si474x are covered under NDA.
2. High Performance RDS is availa ble in Si4705/31/35/85-D50 and later.
Si47xx-EVB
2 Rev. 0.8
Si4734 AM/SW/LW/FM Receiver  3x3
Si4735 AM/SW/LW/FM Receiver with RDS 
23x3
Si4736 AM/FM/WB Receiver  3x3
Si4737 AM/FM/WB Receiver with RDS   3x3
Si4738 FM/WB Receiver  3x3
Si4739 FM/WB Receiver with RDS  3x3
Si47401AM/FM Receiver  4x4
Si47411AM/FM Receiver with RDS  4x4
Si47421AM/LW/SW/FM/WB Receiver  4x4
Si47431AM/LW/SW/FM/WB Receiver with
RDS   4x4
Si47441AM/LW/SW/FM Receiver  4x4
Si47451AM/LW/SW/FM Receiver with RDS  4x4
Si47491High-Performance RDS Receiver  4x4
Si4784 FM Receiver 
3x3
Si4785 FM Receiver with RDS 
23x3
Table 1. Product Family Function (Continued)
Part
Number General Description
FM Transmitter
FM Receiv er
AM Receiver
SW/LW Receiver
WB Receiver
RDS
High Performance RDS
RPS
SAME
Digital Input
Digital Output
Embedded FM antenna
AEC-Q100 Qualif ied
Package Size (mm)
Notes:
1. Si4706, Si4707, and Si474x are covered un der NDA.
2. High Performance RDS is availa ble in Si4705/31/35/85-D50 and later.
Si47xx-EVB
Rev. 0.8 3
TABLE OF CONTENTS
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.1. Si47xx Baseboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.2. Si47xx Daughtercards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3. Recommended Hardware Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
3.1. Hardware Setup for FM Transmitter Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
3.2. Hardware Setup for FM or Weather Band Receiver Test . . . . . . . . . . . . . . . . . . . . .29
3.3. Hardware Setup for AM Receiver Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
4. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4.1. Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4.2. Board Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
4.3. Switching Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
4.4. State Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
4.5. Disconnecting the EVB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
5. FM Transmitter GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
5.1. Configuring the Si47xx as an FM Transmitter Using Analog Audio Input . . . . . . . . .40
5.2. Configuring the Si47xx as an FM Transmitter Using Digital Audio with
Analog Audio Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
5.3. Configuring the Si47xx as an FM Transmitter Using Digital Audio with
SPDIF Digital Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
5.4. FM Transmitter Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
5.5. FM Transmitter Settings (Analog Mode) Property Window . . . . . . . . . . . . . . . . . . . .45
5.6. FM Transmitter Settings (Digital Mode) Property Window . . . . . . . . . . . . . . . . . . . .47
5.7. CODEC Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
5.8. SPDIF Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
5.9. FM Transmitter Receive Power Scan Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
5.10. FM Transmitter Radio Data Service (RDS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
5.11. FM Transmitter Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
6. FM Receiver GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
6.1. Configuring the Si47xx as an FM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
6.2. FM Receiver Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
6.3. FM Receiver Settings Property Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
6.4. CODEC and SPDIF Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
6.5. FM Receiver RDS Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
6.6. FM Receiver RDS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
6.7. FM UI Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
6.8. FM Receiver RSSI/SNR Graph Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
6.9. FM Receiver Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
6.10. FM Receiver Logging Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
6.11. FM Receiver Configuration Helper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
7. Weather Band GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
7.1. WB Receiver Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
7.2. Weather Band Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Si47xx-EVB
4 Rev. 0.8
7.3. Weather Band Settings Property Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
7.4. Weather Band Receiver RSSI/SNR Graph Window . . . . . . . . . . . . . . . . . . . . . . . . .94
7.5. Weather Band Receiver Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
7.6. Weather Band Receiver SAME Event Data (Si4707 only) . . . . . . . . . . . . . . . . . . . .96
8. AM Receiver GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
8.1. AM Receiver Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
8.2. AM Receiver Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
8.3. AM Receiver Property Settings Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
8.4. AM Receiver RSSI/SNR Graph Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
8.5. AM Receiver Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
8.6. AM Receiver Logging Tools Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
8.7. AM Receiver Configuration Helper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
9. Using the EVB with a 9 V Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
10. Debugging Guidelines for Si47xx EVB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
11. Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
12. Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
12.1. Si47xx-EVB Baseboard Rev 1.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
12.2. Si471x/2x-EVB Daughtercard Rev 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131
12.3. Si473x-EVB Daughtercard Rev. 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
12.4. Si474x–EVB Daughtercard Rev 1.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
12.5. Si4749-EVB Daughtercard Rev 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137
12.6. Antenna Card Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139
13. Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
13.1. Si47xx-EVB Baseboard Rev 1.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
13.2. Si471x/2x-EVB Daughtercard Rev 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144
13.3. Si473x-EVB Daughtercard Rev 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147
13.4. Si474x-EVB Daughtercard Rev 1.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150
13.5. Si4749-EVB Daughtercard Rev 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152
13.6. Antenna Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155
Documentation Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164
Si47xx-EVB
Rev. 0.8 5
This user's guide contains information related to only the Si47xx EVBs itemized in Table 2. Table 2 serves as a
quick reference guide for the sections of interest for your EVB. Sections 1, 4, 9, and 10 of the document apply to all
EVBs.
Table 2. Quick Reference Guide
Part Description Recommended
HW Setup GUI Bill of Materials Schematics Layout
Si4704/05/
06/84/85 Sections 2.1.,
2.2.1., and
2.2.6.
Section 3.2. Section 6. Section 11. Tables
29 and 30 Sections 12.1.,
12.2. Sections
13.1., 13 .2.
Si4707 Section 2.2.2.,
2.2.5., 2.2.6. Section 3.2. Section 7. Section 11.,
Tables 29 and 31 Section 12.1.,
12.3. Section
13.1., 13 .3.
Si4710/11/
12/13 Sections 2.1.,
2.2.1., 2.2.6. Section 3.1. Section 5. Section 11. Tables
29 and 30 Sections 12.1.,
12.2. Sections
13.1., 13 .2.
Si4720/21 Sections 2.1.,
2.2.1., 2.2.6. Sections 3.1.
and 3.2. Sections 5.
and 6. Section 11. Tables
29 and 30 Sections 12.1.,
12.2. Sections
13.1., 13 .2.
Si4730/31 Sections 2.1.,
2.2.2., 2.2.5.,
2.2.6
Sections 3.2.
and 3.3. Sections 6.
and 8. Section 11. Tables
29, 31, 34, 35, and
36
Sections 12.1.,
12.3., 12.6.1.,
12.6.2.
Sections
13.1., 13.3.,
13.6.1.,
13.6.2.
Si4734/35 Sections 2.1.,
2.2.2., 2.2.5.,
2.2.6.
Sections 3.2.
and 3.3. Sections 6.
and 8. Section 11. Tables
29 and 37 Sections 12.1.,
12.3., 12.6.3. Sections
13.1., 13.3.,
13.6.3.
Si4736/37 Sections 2.1.,
2.2.2., 2.2.5.,
2.2.6.
Sections 3.2.
and 3.3. Sections 6.,
7., and 8. Section 11. Tables
29 and 37 Sections 12.1.,
12.3., 12.6.3. Sections
13.1., 13.3.,
13.6.3.
Si4738/39 Sections 2.1.,
2.2.2., 2.2.5.,
2.2.6.
Sections 3.2.
and 3.3. Sections 6.,
and 7. Section 11. Tables
29 and 37 Sections 12.1.,
12.3., 12.6.3. Sections
13.1., 13.3.,
13.6.3.,
Si4740/41/
42/43/44/45 Section 2.1.,
2.2.3., 2.2.5.,
2.2.6.
Sections 3.2.
and 3.3. Sections 7.
and 8. Section 11., Table
29, 32, 37 Sections 12.1.,
12.4., 12.6.4. Sections
13.1.,
13.4.,13.6.4.
Si4749 Sections 2.1.,
2.2.4. , 2.2.6. Section 3.2. Section 6. Section 11. Tables
29 and 33 Sections 12.1.,
12.5. Section
13.1., 13 .5.
Si47xx-EVB
6 Rev. 0.8
There are ten different EVB kits within the Si47xx family. Each kit ships with a standard set of components that are
common to all kits and a unique set that depends on the EVB kit P/N. Standard set of components are:
Customer welcome and evaluation letter
EVB Characterization Report
USB cable
RCA cable
9V battery
Headphones
Si47xx CD including:
Data sheet
Development application GUI rev 2.5.4 or later
User's guide
Quick start guide. The unique set of components for each EVB kit is defined in Table 3.
Table 3. Si47xx-EVB Kit Unique Contents
Adapters
EVB Kit Base
Board Daughtercard Antenna
Cards Antennas BNC
Male to
RCA
Female
SMA
Male to
BNC
Female
SMA
Female to
BNC Male
SMA
Male to
SMA
Male
Si4705-EVB Si47xx
Base board
Rev1.3 or
later
Si471x/2x
Daughtercard
Rev1.2 or later
——YesNoNoNo
Si4706-EVB Si47xx
Base board
Rev1.3 or
later
Si471x/2x
Daughtercard
Rev1.2 or later
——YesNoNoNo
Si4707-EVB Si47xx
Base board
Rev1.3 or
later
Si473x
Daughtercard
Rev1.2 or later
SAME
antenna Whip
antenna Yes No No No
Si4713-EVB Si47xx
Base board
Rev1.3 or
later
Si471x/2x
Daughtercard
Rev1.2 or later
——YesNoNoNo
Si4721-EVB Si47xx
Base board
Rev1.3 or
later
Si471x/2x
Daughtercard
Rev1.2 or later
——YesNoNoNo
Si4731-EVB Si47xx
Base board
Rev1.3 or
later
Si473x
Daughtercard
Rev1.2 or later
4731 antenna
kit (large fer-
rite, medium
ferrite, air loop
transformer)
Loop
antenna Yes No No No
Si47xx-EVB
Rev. 0.8 7
Si4735-EVB Si47xx
Base board
Rev1.3 or
later
Si473x
Daughter
Card Rev1.2
or later
SW antenna Whip
antenna Yes No No No
Si4737-EVB Si47xx
Base board
Rev1.3 or
later
Si473x
Daughter
Card Rev1.2
or later
WB antenna Whip
antenna Yes No No No
Si4743-EVB Si47xx
Base board
Rev1.3 or
later
Si474x
Daughter
Card Rev1.3
or later
Antenna
Dummy Whip
antenna Yes Yes No Yes
Si4749-EVB Si47xx
Base board
Rev1.3 or
later
Si4749
Daughter
Card Rev1.0
or later
—Whip
antenna Yes No Yes No
Table 3. Si47xx-EVB Kit Unique Contents (Continued)
Adapters
EVB Kit Base
Board Daughtercard Antenna
Cards Antennas BNC
Male to
RCA
Female
SMA
Male to
BNC
Female
SMA
Female to
BNC Male
SMA
Male to
SMA
Male
Si47xx-EVB
8 Rev. 0.8
2. Description
Si47xx EVB consists of a baseboard, a daughtercard with the Si47xx part pre-mounted, and, if applicable, an
antenna card. The baseboard is common and shared among all Si47xx EVBs. The following sections refer to both
the images in the figures and the silkscreen on the Si47xx EVB. Please refer to both when using this guide.
2.1. Si47xx Baseboard
Figure 1. Baseboard Connectors, Jumpers, and Devices
Baseboard power connecto r s/devices:
J79 USB connector (using USB power)
J78 External power connector
J77 Battery connector
J76 Terminal block (TB) power connector
SW1 Switch to select between USB power or Ext power
J61 Jumper: Baseboard power select (3.3 V or TB)
J68 Jumper: Si47xx VIO power select (3.3 V or adjustable voltage via R73 or TB)
J69 Jumper: Si47xx VDD power select (3.3 V or adjustable voltage via R74 or TB)
J79 SW1 J78
J76
J74 PB1
J69
J68
J61
J30
J6
J52
X1
J54
J57
J27
J75
U22 D1 J77
Si47xx-EVB
Rev. 0.8 9
Baseboard audio I/O connectors:
J6 RCA output
J30 Line output
Note: Line output will not be supported on new EVBs as of February 14, 2011.
Baseboard clock connectors/devices:
X1 32.768 kHz crystal oscillator
J52 Solder bump: select internal RCLK from oscillator
J54 Ext RCLK SMA connector input
J57 Jumper: Enable or Disable Int RCLK
Baseboard MCU connectors/devices:
U22 C8051F342 MCU
J79 USB connector to communicate with the MCU
J74 JTAG conn ector for the MCU
PB1 Push button to reset the MCU
D1 LED to confirm po wer supply to the MCU
Baseboard to Daughtercard connectors:
J27 Si47xx daughtercard connector
J75 Expansion card connector (reserved)
2.1.1. Power Supply Network
Figure 2. Power Supply Block Diagram
SW1
J78
EXT
LDO
1.25–3.9 V
(R73)
LDO
1.25–7 V
(R74)
Jumper
J68
Jumper
J69
Daughterboard
Si47xx
VIO
10 11 VDD
ADJ
TB +3.3 V
LDO
+3.3 V
(U17)
J79
USB
J76
Terminal
Block (TB )
Gnd
Vdd
Vio
Vm
ADJ
+3.3 V
TB
+3.3 V
TB
Vmcu
Jumper
J61
VIO
VDD
J77
BATT
Si47xx-EVB
10 Rev. 0.8
The Si47xx EVB can be powered using one of the following power supply op tions:
1. USB power supply via J79
2. External dc (Ext DC) power supply via power jack J78 or battery via J77
3. Three separate power supplies (Vdd, Vio, Vmcu) via terminal block J76
The EVB has three supply rails: Vdd, Vio, and Vmcu. Vdd and V io are routed directly to the daughtercard to power
the Vdd and Vio pins on the Si47xx chip, while Vmcu is used to power the baseboard.
The external dc power supply and battery should not be connected simultaneously. Refer to Section 9. "Using the
EVB with a 9 V Battery‚" on page 109 for more information.
USB Power Supply & EXT DC Power Supply
Switch SW1 is used to select between the USB power supply and Ext dc power supply.
The USB power supply or the Ext dc power supply can be configured in one of the following two modes:
1. Fixed +3.3 V
2. Adjustable Vdd and Vio
Fixed +3.3 V
Only one LDO is used in this mode which outputs a +3.3 V supply to all three rails (Vdd, Vio, and Vmcu). The
jumpers need to be set according to Figure 3 to use the EVB in this configuration. This is the default configuration
on the EVB.
Figure 3. Default Fixed +3.3 V Jumpers Setting
Terminal Block Power Supply
If the terminal block supplies are used, then jumpers J61, J68, and J69 need to be set according to Figure 4. The
user then need s to conne c t thre e different po we r su pp lies for Vdd , Vio, and Vmcu.
Figure 4. Terminal Block Jumpers Setting
J69J68 J61
ADJ
+3.3V
TB
ADJ
+3.3V
TB
+3.3V
TB
Vio Vdd Vmcu
ADJ
+3.3V
TB
+3.3V
TB
ADJ
+3.3V
TB
J69
J68 J61
Vio Vdd Vmcu
Si47xx-EVB
Rev. 0.8 11
2.1.2. Microcontroller
Figure 5. MCU Block Diagram
The Si47xx EVB uses a Silicon Laboratories' C8051F342 microcontroller to control the Si47xx and to provide USB
connectivity from the host PC (via connector J79). The LED D1 illuminates to confirm that power is being properly
supplied to the C8051F3 42 and firmware has loa ded. Push-button PB1 man ually resets the C8051F342. The JTAG
connector J74 is used to program the C8051F342 at production time, and is not required thereafter.
MCU
C8051F342
Si47xx
SEN~
6 7 8
5
19 18 17
SCLK
SDIO
GPO1
GPO2
GPO3/
DCLK
RST~
MS_SENB
MS_RSTB
MS_SCLK
MS_SDIO
S_GPO3/DCLK
MS_GPIO2 SD_GPO1
Daughterboard
MD_GPIO3
TC_BCLK
(reserved for digital Rx ) Jumper
J41
MD_GPIO1
MD_GP4
J74
JTAG
PB1
Reset
J79
USB Jumper
J65
Si47xx-EVB
12 Rev. 0.8
2.1.3. Reference Clock
Figure 6. Reference Clock Block Diagram
The Si47xx accepts a 32.768 kHz reference clock at the RCLK pin. On the EVB, this clock is provided by a
precision crystal oscillator. The user has the option of not using the onboard oscillator and bringing in the reference
clock from an external source through SMA connector J54.
When the user chooses to provide an external RCLK, jumper J52 has to be set accordingly. The user has the
option to turn off the onboard crystal oscillator by installing jumper J57.
2.1.4. Audio I/O
Figure 7. Audio I/O Block Diagram
Daughterboard
Si47xx
RCLK
9
X1
32.768 kHz
INT RClk
Jumper
J52
J54
EXT
RClk
Jumper
J57
DIS_INT_RCLK
INT_RCLK
EXT_RCLK
Note: Jumper J44 and J45 are automatically configured in EVB Rev 1.3.
Jumper
J5&J13
EVB In (TX only) 47xx Audio2 47xx Audio1 EVB Out (RX only)
1
0
0
1
CODEC OUT
DIN LINE
OUT
CODEC I N
LINE
IN DOUT
S/PDIF IN
SPDIF
IN DOUT
S/PDIF OUT
DIN SPDIF
OUT
0
1
0
1
Jumper
J45
TX: Analog/Digital In TX: Analog In TX: Digital In RX: Analog/Digital Out
RX: Digital Out RX: Analog Out
AUDIO2
To_TX
From_RX
AUDIO1
From_RX
To_TX Jumper
J44
RCA In
Line In
(white)
SPDIF In
(white)
RCA Out
Line Out
(black)
SPDIF Out
(black)
Si47xx
(Daughterboard)
LIN/ DFS2
RIN/ DOUT LOUT/ DFS1
ROUT/ DIN 14
13
AUDIO1
AUDIO2
15
16
J7
J19
J19
J6
J30
J30
Audio2
Select Audio1
Select
Digital Input
Select
Si47xx-EVB
Rev. 0.8 13
The EVB supports three different kinds of configurations for the FM transmitter:
Analog In to Analog In
Analog In to Digital In
Digital In to Digital In
Analog In to Analog In: This configuration provides a way for the user to evaluate the analog audio input for FM
transmission.
The input to the EVB is an analog audio p rovided via the RCA input connector J7 or LINE In connector J19 (white ).
Jumpers J5 and J13 are set to RCA input by default. The user has to change this jumper accordingly if LINE In is
being used. Th en th e anal og audio input is ro uted directly through a switch to the Si47xx Rin/Lin inputs pin 15 and
16 (Audio2).
Analog In to Digita l In: This configu ration provi des a way for the user to evaluate the Si47xx digit al audio inp ut for
FM transmission using an analog audio input.
The input to the EVB is an analog audio p rovided via the RCA input connector J7 or LINE In connector J19 (white ).
Jumpers J5 and J13 are set to RCA input by default. The user has to change this jumper accordingly if LINE In is
being used. Then the analog audio input is converted by CODEC U10 to a serial audio digital data before it is
routed to the Si47xx digital audio input DIO and DFS pin 13 and 14 (Audio1). The DCLK input is routed to the
GPO3/DCLK pin 17. Make sure that jumper J41 is set to DCLK to ensure proper operation.
Digital In to Digital In: This configuration provides a way for the user to evaluate the Si47xx digital audio input for
FM transmission using S/PDIF digital audio commonly found in sound cards.
The input to the EVB is a digital S/PDIF data provided via the S/PDIF In connector J19 (white). The digital S/PDIF
input is converted by S/PDIF Translator U9 to a serial audio digital data before it is routed to the Si47xx digital
audio input DIO and DFS pin 13 and 14 (Audio1). The DCLK input is routed to the GPO3/DCLK pin 17. Make sure
that jumper J41 is set to DCLK to ensure proper operation.
Note: Digital in through J19 will not be supported on ne w EVBs as of February 14, 2011.
The EVB supports three different kinds of configurations for the FM receiver:
Analog Out to Analog Out
Digital Out to Digital and Analog Out
Dual Output (Digital and Analog Out)
Analog Out to Analog Out: This configuration provides a way for the user to evaluate the analog audio output for
receiver operation. The output of the Si47xx is routed to RCA output connector J6 and Line output connector J30.
Digit al Out to Digital and Analog Out: This configuration provides a way for the user to evaluate the digital audio
output for FM and AM receive using either S/PDIF digital audio or analog audio through the onboard CODEC. The
Si47xx digital audio out is routed through the S/PDIF translator µ9 to S/PDIF output connector J30 and routed
through the CODEC to RCA output connector J6 and line output connector J30.
Note: Digital output through J30 will not be supported on new EVBs as of February 14, 2011.
Dual Output (Digital and Analog Out): This configuration provides a way for the user to evaluate the analog
audio out and digital audio using S/PDIF digital audio for FM and AM. The analog output of the Si47xx is routed to
RCA output connector J6 and line output connector J30 and the digital audio out is routed through the S/PDIF
translator to S/PDIF output connector J30.
Note: Digital output through J30 will not be supported on new EVBs as of February 14, 2011.
Si47xx-EVB
14 Rev. 0.8
IMPORTANT: Jumper Settings
Because of the many possibilities available to configure the EVB, ensure that these four jumpers are set
accordingly:
1. J41: GPO3/DCLK se tting
2. J44: TX/RX setting for Audio1 I/O (automatically set by the GUI for baseboard 1.3 and later)
3. J45: TX/RX setting for Audio2 I/O (automatically set by the GUI for baseboard 1.3 and later)
4. J5, J13: Analog Audio Sour ce, RCA or Line In
J41: GPO3/DCLK Setting
Upper—DCLK dig ital audio cloc k
Lower—GPO3 digital control signal
For configuring the Si47xx digital audio input, make sure that the jumper is set in the Upper position so that the
DCLK signal will be routed to the Si47xx.
J44: TX/RX Setting for Audio1 I/O (automatically set by the GUI for baseboard 1.3 and later)
Upper—Audio1 is set to FM transmit (pin 13 and 14 will be the digital audio input).
Lower—Audio1 is set for FM receive (pin 13 and 14 will be analog/digital audio output).
J45: TX/RX Setting for Audio2 I/O (automatically set by the GUI for baseboard 1.3 and later)
Upper—Audio2 is set to FM transmit (pin 15 and 16 will be the analog/digital audio input).
Lower—Audio2 is set for FM receive (pin 15 and 16 will be the digital audio output).
J5, J13: Analog Audio Source, RCA or Line In
Upper—RCA inputs are used for analog audio source.
Lower—Line inputs are used for analog audio source.
Si47xx-EVB
Rev. 0.8 15
2.2. Si47xx Daughtercards
2.2.1. Si471x/2x Daughtercard
Figure 8. Si471x/2x Daughtercard Connectors and Devices
Daughtercard Connectors and Components:
U1 Si472x FM Transceiver or Si470x FM Receiver or Si471x FM Transmitter
L2 Tuning Inductor
R2 0 resistor to connect FM TX output to 10 cm trace built-in antenna
C8 2 pF capacitor to connect FM TX output to J1 SMA connector
R4 50 termination resistor
J1 SMA connector for FM transmitter output or FM receiver input for embedded antenna
J2 Header for putting external antenna for FM transmitter or embedded antenna for FM receiver
J28 SMA connector for FM receiver input
J29 Headphone jack for FM receiver
Si47xx-EVB
16 Rev. 0.8
Figure 9. Fully Assembled Si471x/2x EVB
Si470x/1x/2x EVBs use Si471x/2x daughtercard with different population options depending on the individual
Si470x/1x/2x part. Please refer to individual Bill of Materials for each board.
Si47xx-EVB
Rev. 0.8 17
2.2.2. Si473x Daughtercard
Figure 10. Si473x Daughtercard Connectors and Devices
Daughtercard connectors and components:
J1 SMA connector for AM test circuit (does not apply to Si4707-EVB)
J2 Header for antenna inter face connection
J24 Headphone jack
J26 SMA connector for FM test circuit
L4 270 nH inductor for FM input
U1 Si473x AM/FM/SW Weather Band Receiver chip (or Si4707 WB/Same receiver for Si4707-EVB only)
C2 Vdd bypass capacitor
C3 FM test circuit ac coupling capacitor
C8 AM input ac coupling capacitor
C12 FM input ac coupling cap acitor
C13 AM test circuit ac coupling capacitor
Si47xx-EVB
18 Rev. 0.8
Figure 11. Fully Assembled Si473x-EVB with Ferrite Antenna Card
The Si473x/07 EVBs use Si473x daughtercard with different population options depending on the individual
Si473x/07 part. Please refer to individual Bill of Materials for each card.
Table 4 shows the antenna and audio connections for the Si47xx EVBs.
Si47xx-EVB
Rev. 0.8 19
2.2.3. Si474x Daughtercard
Figure 12. Si474x Daughtercard Connectors and Devices
Daughtercard connectors and components:
J4 BNC connector for antenna connection
C6, C1, C18 Vdd bypass capacitor
C2 FM matching component
L1, L5 FM matching component
Q1–2 Cascode amplifier for AM front-end boost circuit.
U1 Si4740/41/42/43 AM/FM Receiver chip
The daughtercard implements the Si4740/41/42/43 AM/FM RDS receive solution.
The Si474x daughtercard also has a cascode amplifier circuit made up of two transistors to provide gain boost for
AM front-end. The on-chip De-Q resistors will then be used to adjust the overall circuit gain. In cases where the AM
reception is too strong, the front-end attenuators can be engaged by using GPIO1 as the control signal.
Si47xx-EVB
20 Rev. 0.8
Figure 13. Fully Assembled Si474x-EVB
Si47xx-EVB
Rev. 0.8 21
2.2.4. Si4749 Daughtercard
Figure 14. Si4749 Daughtercard Connectors and Devices
Daughtercard connectors and components:
J1 SMA connector for pass-thru FM connection
J2 SMA connector for FM antenna connection
C2 Vdd bypass capacitor
L1 FM matching component
U2 Si4749 RDS Receiv er
The daughtercard implements the Si4749 RDS receive solution. The SMA connector, J2, allows the user to attach
a whip antenna for FM reception or a signal generator for FM test circuit. A pass-thru connection, J1, is also
present to provide the FM signal to other FM receivers if necessary.
Si47xx-EVB
22 Rev. 0.8
Figure 15. Fully Assembled Si4749-EVB
Si47xx-EVB
Rev. 0.8 23
2.2.5. Antenna Interfaces
2.2.5.1. AM Antenna Interface
Figure 16. Antenna Board Options—SL4X30MW100T (Medium Ferrite), SL5X7X100MW70T (La rge
Ferrite), and SL9X5X4MWTF Airloop
The user has the flexibility of choosing one of the two available antenna options. The user can either decide to use
the airloop antenna or the ferrite loop stick antenna.
Si47xx-EVB
24 Rev. 0.8
2.2.5.2. SW and Weather Band Antenna Interfaces
Figure 17. SW/WB Antenna Card (SW Population) and (WB Population)
The BNC connector, J2, will be used to connect a whip antenna for shortwave, FM, and weather band reception.
For SW reception, switch S1 must be in the SW position . The ferrite bar is used for AM reception, and the switch
S1 must be in the AM position for AM reception.
When using the WB Antenna Card, WB reception is through the whip antenna. For a better listening experience,
plug the headphones to J30 rather than J24.
Note: LW not supported with SW/WB Antenna Card.
2.2.5.3. Si474x Antenna Dummy Card
Figure 18. Si474x Antenna Dummy Card
Si47xx-EVB
Rev. 0.8 25
Table 4. Si47xx Antenna Connections
EVB Kit
Name Receiver AM Ante nna
Options AM
Connections FM
Antenna
Options
FM
Connections SW Antenna
Options SW
Connections WB Antenna
Options WB
Connections
Si4705-X-
EVB Si4705 None None Head-
phone J29 None None
Trace J2
Si4706-X-
EVB Si4706 None None Head-
phone J29 None None
Trace J2
Si4707-B-
EVB Si4707 None None None None Headphone J24
Whip/SAME
Antenna Card J2
Si4713-B-
EVB Si4713 None None Trace J2 None
Si4721-B-
EVB Si4721 None None Head-
phone J29 None
Trace J2
Si4731-X-
EVB Si4731 SL5X7X100M
W70T Ferrit e
/ Large Ferrite
J2 Head-
phone J24 None
SL4X30MW1
10T Ferrite /
Medium Fer-
rite
J2
SL9X5X4MW
TF Autotrans -
former / Air
loop
J2
Si4735-X-
EVB Si4735 SL5X7X100M
W70T Ferrit e
/ SW Antenna
card
J2 Head-
phone J24 Whip/SW
Antenna Card J2
Whip/SW
Antenna
Card
J2 For SW recep-
tion, set the
S1 switch to
SW position.
LW is not sup-
ported by the
SW antenna
card.
Si4737-X-
EVB Si4737 SL5X7X100M
W70T Ferrit e
/ WB Antenna
card
J2 Head-
phone J24 None Headphone J24
Si47xx-EVB
26 Rev. 0.8
Whip/WB
Antenna
Card
J2 Whip/WB
Antenna Card.
For WB recep-
tion, set the S1
switch to WB
position
J2
Si4743-C-
EVB Si4743 Whip / Si474x
Antenna
Dummy card
J4 Whip J4 Whip
Si4749-C-
EVB Si4749 None None Whip J2 None
Table 5. Si47xx Audio Connections
EVB Kit Name Receiver Audio Out Options Audio Out Connections Audio In Options Audio Connections
Si4705-X-EVB Si4705 Headphone J29 None None
Unity Gain Buffer / RCA J6 (Baseboard)
Si4706-X-EVB Si4706 Headphone J29 None None
Unity Gain Buffer / RCA J6 (Baseboard)
Si4707-B-EVB Si4707 Headphone J29 None None
Unity Gain Buffer / RCA J6 (Baseboard)
Si4713-B-EVB Si4713 None None Unity Gain Buffer / RCA J7 (Baseboard)
Si4721-B-EVB Si4721 Headphone J29 Unity Gain Buffer / RCA J7 (Baseboard)
Unity Gain Buffer / RCA J6 (Baseboard)
Si4731-X-EVB Si4731 Headphone J24 None None
Unity Gain Buffer / RCA J6 (Baseboard)
Si4735-X-EVB Si4735 Headphone J24 None None
Unity Gain Buffer / RCA J6 (Baseboard)
Si4737-X-EVB Si4737 Headphone J24 None None
Unity Gain Buffer / RCA J6 (Baseboard)
Si4743-C-EVB Si4743 Unity Gain Buffer / RCA J6 (Baseboard) None None
Si4749-C-EVB Si4749 None None None None
Table 4. Si47xx Antenna Connections (Continued)
EVB Kit
Name Receiver AM Ante nna
Options AM
Connections FM
Antenna
Options
FM
Connections SW Antenna
Options SW
Connections WB Antenna
Options WB
Connections
Si47xx-EVB
Rev. 0.8 27
2.2.6. Test Circuit Interfaces
Table 6 shows the test circuit interface connections for Si47xx EVBs.
Table 6. Si47xx Test Circuit Connections
EVB Kit Name Receiver AM/SW/LW
Test
Options
AM/SW/LW
Connections FM Test
Options FM Connections Audio Out
Test Options Audio Out
Connections Audio In
Test
Options
Audio In
Connections
Si4705-X-EVB Si4705 None None FMI / SMA J28 through C1.
Remove C9 for
best sensitivity
Unity Gain
Buffer / RCA J6 (Baseboard) None None
LPI / SMA J1
Si4706-X-EVB Si4706 None None FMI / SMA J28 through C1.
Remove C9 for
best sensitivity
Unity Gain
Buffer / RCA J6 (Baseboard) None None
LPI / SMA J1
Si4707-B-EVB Si4707 None None FMI / SMA J26 Unity Gain
Buffer / RCA J6 (Baseboard) None None
Si4713-B-EVB* Si4713 None None LPI / SMA J1 None None Unity Gain
Buffer / RCA J7
Si4721-B-EVB Si4721 None None FMI / SMA J28 through C1.
Remove C9 for
best sensitivity
Unity Gain
Buffer / RCA J6 (Baseboard) Unity Gain
Buffer / RCA J7
LPI / SMA J1
Si4731-X-EVB Si4731 AMI / SMA J1 through
C13, remove
C8 for best
sensitivity
FMI / SMA J26 through C3.
Remove C12 for
best sensitivity
Unity Gain
Buffer / RCA J6 (Baseboard) None None
Si4735-X-EVB Si4735 AMI / SMA J1 through
C13, remove
C8 for best
sensitivity
FMI / SMA J26 through C3.
Remove C12 for
best sensitivity
Unity Gain
Buffer / RCA J6 (Baseboard) None None
Si4737-X-EVB Si4737 AMI / SMA J1 through
C13, remove
C8 for best
sensitivity
FMI / SMA J26 through C3.
Remove C12 for
best sensitivity
Unity Gain
Buffer / RCA J6 (Baseboard) None None
Si4743-C-EVB Si4743 AMI / BNC J4 FMI / BNC J4 Unity Gain
Buffer / RCA J6 (Baseboard) None None
Si4749-C-EVB Si4749 None None FMI / SMA J2 None None None None
*Note: The FM RF output will be available through the SMA connector J1. Refer to Table 7.
Table 7. FM Band Attenuation Factors
Frequency (MHz) Attenuation (dB)
76 32.13
88 30.91
98 30
108 29.2
Si47xx-EVB
28 Rev. 0.8
3. Recommended Hardware Setup
The Si47xx-EVB can be configured for FM transmit, FM receive, WB receive, or AM/SW/LW receive. The following
is a description of how to correctly config ure the device for either mode of operation.
3.1. Hardware Setup for FM Transmitter Test
Figure 19. Hardware Setup for FM Transmitter Test
Instructions for Si471x/2x daughtercards:
1. Connect the USB cable from PC to the EVB USB connector J79. The USB connection will serve as a dual purpose:
supplying the power to the EVB and controlling the EVB.
2. Connect an analog audio generator to the RCA input connector J7 using an RCA cable or connect an SPDIF digital audio
generator to connector J19 using an SPDIF cable.
3. Connect an RF analyzer from the FM output SMA connector J1 using an SMA cable.
4. J19 and J30 S/PDIF connections are no longer supported on EVBs as of February 14, 2011.
Si471x/2x
Daughterboard
RF
Analyzer Analog
Audio
Generator
PC
w/ USB
port
J28
RCA OUT
USB
FM IN J6
J79
USB Cable
SMA Cable RCA Cable
EXT pwr
USB pwr
EXT Jack
SW1
Terminal
Block (TB)
J76
J78
Si47xx
Baseboard
J1
FM OUT RCA IN J7
J19
J30
S/PDIF
Audio
Generator
J44 J45
Jumpers
Setting
J41
TX
RX
TX
RX
DCLK
GPIO3
Note: J44 and J45 are
automatically configured in
EVB Rev1.3 and later
Si47xx-EVB
Rev. 0.8 29
3.2. Hardware Setup for FM or Weather Band Receiver Test
Figure 20. Hardware Setup for FM/Weather Band Receiver Test
Instructions for Si4704/05/06/2x/3x/8x daughtercards:
1. Connect the USB cable from PC to the EVB USB connector J79. The USB connection will serve as a dual purpose,
supplying the power to the EVB and controlling the EVB.
2. Connect an audio analyzer from the RCA output connector J6 using an RCA cable.
3. Connect an RF generator to the FM input SMA connector J28 or J26 using an SMA cable.
4. Connect an audio analyzer to the S/PDIF output connector, J30, using an optical cable.
5. To avoid possible sources of interference, please remove C9 or C12 (depending on the daughtercar d). This will
disconnect the hea dphone circuit from the test circ uit.
6. J19 and J30 S/PDIF connections are no longer supported on EVBs as of February 14, 2011.
Si47xx-EVB
30 Rev. 0.8
3.3. Hardware Setup for AM Receiver Test
Figure 21. Hardware Setup for AM Receiver Test (Si473x)
Instructions for Si473x daughtercards.
1. Connect the USB cable from PC to the EVB USB connector, J79. The USB connection will not only allow controlling of the
EVB, but will also provide power to the EVB.
2. Connect either the ferrite antenna or th e airloop antenna board. The user also has the option of using the AM test input for
characterization by connecting the AM test input connector J1 to an RF generator source.
3. Connect an audio analyzer to the RCA output (connector J6) using an RCA cable for the analog audio output.
4. Connect an audio analyzer to the S/PDIF output (connector J30) using an optical cable.
5. Or, connect the headphone output to J24 on the daughtercard.
6. J19 and J30 S/PDIF connections are no longer supported on EVBs as of February 14, 2011.
Si473x
Daughterboard
RF
Generator
Audio
Analyzer
PC
w/ USB
port
J28 or J26 RCA OUT
USB
F M IN J6
J79
USB Cable
SMA Cable
RCA Cable
EXT pwr
USB pwr
EXT Jack
SW1
Terminal
Block (TB)
J76
J78
J44 J45
Jumpers
Setting
J41
TX
RX
TX
RX
DCLK
GPIO3
Note: J44 and J45 are
automatically configured in
EVB Rev1.3 and later
Si47xx
Baseboard
J24 RCA IN J7
J19
J30
Optical
Cable
S/PDIF
OUT
J1
Si47xx-EVB
Rev. 0.8 31
Figure 22. Hardware Setup for AM Receiver Test (Si474x)
Instructions for Si474x daughtercards:
1. Connect the USB cable from PC to the EVB USB connector, J79. The USB connection will serve two purposes: supplying
the power to the EVB and co ntrolling the EVB.
2. Connect a whip antenna to J4. The user has the option of using the AM test input for characterization by connecting the AM
test input connector J4 to an RF generator source through an antenna dummy.
3. Connect an audio analyzer to the RCA output (connector J6) using an RCA cable for the analog audio output.
4. Connect an audio analyzer to the S/PDIF output (connector J30) using an optical cable.
5. J19 and J30 S/PDIF connections are no longer supported on EVBs as of February 14, 2011.
Si47xx
Baseboard
Si474x
Daughterboard
RF
Generator
Audio
Analyzer/
Amplifier
PC
w/ USB
port
RCA OUT
USB
J79
USB Cable
RCA Cable
EXT pwr
USB pwr
EXT Jack
SW1
Terminal
Block (TB)
J76
J77
AM IN
J6
J19
J30
S/PDIF
OUT
Optical Cable
J4
Antenna
Dummy
AM Test Setup
Si47xx-EVB
32 Rev. 0.8
4. Getting Started
4.1. Software Installation
The Si47xx Windows GUI (graphical user interface) software is designed for use with the Si47xx evaluation board
(EVB). The GUI software revision number is available under HelpAbout.
The GUI software development program uses a host machine USB port to communicate with the Si47xx EVB and
is tested for use with Windows XP, Windows 2000, and Windows 7.
To install, insert the Silicon Laboratories Si47xx CD into the host machine CD drive and launch Windows Explorer.
Open the CD to explore the contents in a window like the one shown in Figure 23.
Figure 23. Installation and Setup Screen
Important: Open and read the Readme.doc file at this point. It may contain information that is not captured here,
and which could be very important to the functionality of the EVB or software.
Run the Setup.Exe and follow the instructions on the screen.
Note: If you get this Error message: "This setup requires th e .NET Framework version 4.0," then you sho uld install the .NET
Framework that is provided on the CD and re-run the setup. The GUI requires version 4.0; however, multiple versions
such as 2.0, 3.0, and 5.0 can be installed simultaneously.
After installation is finished, a Silicon Labs Audio GUI icon will appear on your desktop. Launch the software by
clicking this icon on the desktop as shown in Figure 24.
Figure 24. Launching the GUI
Si47xx-EVB
Rev. 0.8 33
4.2. Board Initialization
After launching the GUI, you will be shown the initialization window as shown in Figure 25.
Note: This window can be accessed at any time by choosing Initialize from the File menu from the main GUI screen.
Figure 25. GUI Initialization Screen
4.2.1. Board Selection
At the top of the initialization window there is a board selection box, as displayed in Figure 26, that allows the
selection of the board that will be controlled by the GUI. This box is populated automatically and will update real
time as boards are connected/removed from the PC. If no EVBs are listed in the board selection box, verify that an
EVB is connected to the USB port of the PC running the GUI application.
After selecting the desired board the GUI will populate the rest of the dialog with options appropriate to the board
selected. You will only see modes/options for the type of board that is currently selected.
Figure 26. Board Selection Box
Si47xx-EVB
34 Rev. 0.8
4.2.2. Board Discovery Bus Mode
The initialize process can be configured to use either 2-wire or 3-wire bus mode. This can be configured by
selecting File Board Discovery Bus Mode.
This feature is useful when using the Silabs EVB and GUI to control a prototype that is designed to use one bus
mode only.
4.2.3. Function Configuration
For each mode available on the selected EVB, multiple configuration items (Figure 27) will be present to allow for
configuration of the GUI software. It is possible to change thes e sett ings to meet testing requirements. The default
configuration of the board when you connect it to the computer is acceptable for most users. After initialization, the
GUI will save and restore these settings whenever the same type of board is connected.
Figure 27. Mode Configuration Items
4.2.3.1. Functions
Currently the UI supports four possible functions. These functions are AM Receiver, FM Receiver, WB Receiver,
and FM Transmitter.
Each function is configured independently from other functions. It is important to configure all functions as desired
as it is possible to have FM Receive boot in digital mode while AM Receive boots in analog mode.
The currently highlighted function row will be the function that is initialized when the Initialize button is selected.
Settings for other functions that are not selected will be saved and used to initialize that function when choosing
another function from the UI main window.
4.2.3.2. Boot Mode
There are two boot modes possible for each function. It is possible for some boot modes to not be available on
some boards.
From Device—This option will use the firmware embedded on the device selected. This is the faster of the
two options.
From File—This option will use the patch functionality of the device to send firmware from a file stored
within the UI to the device . If using th is option, choose the app ropriate firmware in the Firmwar e column for
the function you are configuring.
Si47xx-EVB
Rev. 0.8 35
4.2.3.3. Default Mode
There are two or more default mod es possible for each function.
Use Last UI State: When selected, the GUI will restore all settings on the device to the previous settings
configured in the GUI the last time it was closed.
Use Chip Defaults: When selected, the GUI will use the settings that were default in the firmware on the
device. Only properties related to the co rrect setting of RCLK (such as fr equency and prescaling ) and initial
tuning (such as frequency) will be changed. If an error occurs during initialization of a function, choose this
setting to default the GUI settings back to the chip defaults.
Saved Configuration S t ates: If you have previously saved or imported any configuration st ates, they will be
listed by name. When one of these is selected, the GUI will restore all settings on the device to the
previously saved settings.
4.2.3.4. Audio Mode
This option allows the user to change between Analog or Digital modes if the board connected supports digital.
Sections 2.1.4, 5, 6, and 7 each document the possible settings in more detail depending on what function is being
configured.
Figure 28 displays the window after the Details button has been pressed which helps with selection of the Audio
Mode by displaying a bitmap of th e current audio setting in the dialog.
Figure 28. Expanded De tails Dialog
4.2.3.5. Firmware
This selection is only required if "From File" was chosen for the Boot Mode. Use this setting to choose which
firmware will be downloaded to the device. If this item turns red then there is no firmware available for the function
so "From Device" must be chosen as the Boot Mode.
Si47xx-EVB
36 Rev. 0.8
4.2.3.6. Bus Mode
This setting affects all functions that are configured. It allows the device to be booted either in 2-wire or 3-wire
mode.
4.2.3.7. Internal Oscillator
When the "Use XOSCEN" is enabled and the board is configured to use the crystal oscillator, the GUI will boot the
device using the crystal oscillator. This option is only available on devices that support the crystal oscillator option.
4.2.3.8. Auto Boot when UI Opened and only One Board is Connected
When this item is selected, the GUI, when launched, will automatically boot the board if the same board is
connected. If more than one board is connected, the GUI will display the initialization dialog to allow selection of
the board to initialize.
4.3. Switching Functions
After the board has been properly configured for all functions it is possible to switch between functions from the
main UI window using the function buttons provided. Only function buttons will appear for the functions supported
by the device currently running. Figure 29 highlights the buttons used to switch functions from the main screen.
Figure 29. Function Switch Buttons
Si47xx-EVB
Rev. 0.8 37
4.4. State Management
Once the part has been initialized, a State Management option becomes available in the File Menu. This GUI
feature allows the user to save, retrieve, load, and delete the configuration state which contains the property
values.
4.4.1. Save Configuration State
To save the current configuration state, select FileState ManagementSave Current State. The Select
Configuration window shown in Figure 30 will pop up. Enter a name for the configuration state and click OK. The
current state that cont ains the proper ty values is now saved u nder th e given name. If a state already exists with the
chosen name, the GUI will give you the option of replacing the original state, entering a different name, or
canceling the sa ve.
Figure 30. Naming a Configuration State during Save
4.4.2. Retriev e Co nf ig u rat io n State
Once a configuration state for a part has been saved, it will appear in the Default Mode list in the Initialization
window as shown in Figure 31. Select the state you wish to retrieve when initializing the part, and all proper ties and
the tuning frequency of the saved configuration will be restored.
Figure 31. Saved Configuration State
Si47xx-EVB
38 Rev. 0.8
4.4.3. Load Configuration State
When a configuration state for a part has been saved, it will also appear in the Load State list as shown in
Figure 32. Select the state you wish to load, and all properties and the tuning frequency of the saved configuration
will be restored without doing initialization to the chip.
Figure 32. Loading Configuration State
4.4.4. Delete Configuration State
To discard a saved configuration state, select FileState ManagementDelete State. The Delete Configuration
window shown in Figure 33 will pop up. Select the configuration state you want to delete from the list and click OK.
The deleted configuration state will no longer be available in the Default Mode list of the Initialization window or
available for export.
Figure 33. Selecting Configuration State to Delete
Si47xx-EVB
Rev. 0.8 39
4.4.5. Export Saved State
In addition to saving, retrieving, and deleting the configuration state, the GUI also gives the end user the ability to
export the configuration state to a file. The file can then be imported to installations of the GUI on different
machines to allow multiple users to easily implement the same configuration state. To export a saved configuration
state to a file, select File State ManagementExport Saved State and the Select Configuration window will pop
as shown in Figure 34. Select the configuration state to export and click OK to save the configuration file with a .ini
extension. This configuration file can now be exported to different machines. The name of the saved state is
retained in the file when exported.
Figure 34. Selecting Configuration State to Export
4.4.6. Import Saved State
A saved configuration state can be imported from a .ini file exported by another instance of the GUI. To import a
saved state, select FileState Management Import State File, then browse for and select the desired file. Once
the file has been imported, the saved state will appear in the Default Mode list in the Initialization window. If a state
already exists with the same name as the state in the imported file, the GUI will give you the option of replacing the
original stat e, choosing a new name for the imported state, or canceling the import from file. The name appearing
in the initialization window will not necessarily be the same as the *.ini file name exported. It will reflect the name of
the original state that was exported.
4.5. Disconnecting the EVB
The GUI provides three methods for disconnecting the device: Closing the GUI, choosing disconnect from the file
menu, or physically disconnecting the device from the PC.
When closing the UI or selecting disconnect from the file menu, the GUI will prompt if the device should be
powered down or not. This prompt allows for further investigation of the device after the GUI has been
disconnected from the EVB. After the board has been disconnected through the File menu, the GUI will save the
current state of the device to disk. This state will be used to power up the device in the same state next time the
board is connected. The GUI will only save the current state if the board is disconnected through the File menu or
the GUI application is closed. If the board is removed from the PC without being disconnected through the File
menu and before the GUI is closed, then all state data will be lost.
Si47xx-EVB
40 Rev. 0.8
5. FM Transmitter GUI
The first Si47xx window is the Initialization window as shown in Figure 35.
Select the FM transmitter function.
As an FM transmitter, there are three audio input settings available:
Analog Input
Analog to Digital Input
Digital Input
5.1. Configuring the Si47xx as an FM Transmitter Using Analog Audio Input
This mode configures the Si47xx to receive analog audio input at pins 15 and 16 (LIN and RIN). The user has the
ability to provide analog audio from RCA In connector (J7) or Line In (J19). Set jumpers J5 and J13 accordingly.
Figure 35 shows the configuration setting for analog audio input. Configure the desired parameters in the
initialization screen and then click Initialize. A new window displaying "Initializing FM Transmitter" will appear.
Figure 35. Configuring the Si47xx to Transmit Analog Input
Si47xx-EVB
Rev. 0.8 41
5.2. Configuring the Si47xx as an FM Transmitter Using Digital Audio with Analog Audio
Source
This mode configures the Si47xx to receive digital audio input at pins 13 and 14 (DIN and DFS), but the user still
provides an analog audio source to the EVB. It is useful for a user who wants to test digital input on the Si47xx but
does not have a digital audio source. The analog audio source is converted to digital audio through the CODEC,
which can be configured to output various digital audio formats. Refer to Figure 41, “CODEC Settings Property
Window,” on page 49 to control the CODEC. Configure the de sir ed parame te rs in th e initialization screen and then
click Initialize. A new window displaying "Initializing FM Transmitter" will appear.
Figure 36. Configuring the Si47xx to Transmit Digital Input by Using Analog Source (CODEC)
Si47xx-EVB
42 Rev. 0.8
5.3. Configuring the Si47xx as an FM Transmitter Using Digital Audio with SPDIF Digital
Source
This mode configures the Si47xx to receive digital audio input at pin 13 and 14 (DIN and DFS) when the user has
an SPDIF digital audio source. The SPDIF source is converted to PCM digital audio by the SPDIF translator. Refer
to Figure 42, “SPDIF Settings Property Window,” on page 50 to control the SPDIF translator.
Note: The Si47xx requires the digital audio signal to be prese nt when initializing the part. Therefore, connect the SPDIF IN
signal prior to initializing the part. SPDIF will not be supported on new EVBs as of February 14, 2011. This mode of
operation will not be available in the initialization window for those boa rds.
Figure 37. Configuring the Si47xx to Transmit Digital Input by Using Digital Source (SPDIF)
Si47xx-EVB
Rev. 0.8 43
5.4. FM Transmitter Main Window
The FM transmitter main window will appear after initialization.
Figure 38. FM Transmitter Main Window
Table 8. FM Transmitter Main Window Descriptions
# Description Range
1Transmit frequency display. Enter the desired FM transmit frequency in this window. 76–108 MHz
2Transmit voltage display. Enter the desired FM transmit voltage in this window. 88–120 dBuV
3Varactor Value. This is an indicator showing the tuning cap value of the Si472x device.
Each number represents 0.25 pF. If the varactor value is manually overwritten in the
property window, the indicator will change from automatic mode to manual mode.
1–191
4RF on or off. Selecting this checkbox will enable the FM transmit, while turning this but-
ton off will disable the FM transmit. On/Off
5Pre-Emphasis. Click one of the thre e buttons to set the pre-em phasis either to Of f, 50 µs
or 75 µs. Off, 50 µs, 75 µs
6Si472x EVB audio input setting indicator: Analog In/Digit al (Analog In to CODEC)/Digital
(SPDIF). Analog, Digital
CODEC, Digital
SPDIF
7Presets. Press and hold the desired preset button for 1.5 seconds to prog ram. The cur-
rent frequency will replace the preset number. Press for less than 1.5 seconds to tune to
the displayed frequency. Presets can also be programme d automatically from the
Receive Power Scan window.
76–108 MHz
8Pilot Tone Generation. Set to 19 kHz and select "Pilot On" when in stereo mode. Set to
0–19 kHz for and select "Pilot On" for test tone generation. 0–19 kHz
9Audio Deviation. Enter the desired audio deviation in this window. 0–90 kHz
10 Pilot Deviation. Enter the desired pilot deviation in this window. 0–90 kHz
1
2
3
45
6
78
9
11
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Si47xx-EVB
44 Rev. 0.8
11 RDS Deviation. Enter the desired RDS deviation in this window ( S i4711/13/21 only). 0–7.5 kHz
12 Total Deviation. This is an indicator only displaying the sum of the audio, pilot and RDS
deviation. If the total deviation exceeds 75 kHz, the indicator will turn red and a warning
sign is displayed.
0–187.5 kHz
13 Input Mute Left/Right. Selecting this checkbox will mute the Left or Right audio channel. On/Off
14 Turn on or off the pilot tone for stereo or mono FM transmit mode. On/Off
15 Turn on or off the RDS transmission (Si4711/13/21 only). On/Off
16 Modulation On. Selecting this checkbox will modulate the audio, pilot, and RDS signal
according to the audio, pilot, and RDS deviation. De-selecting this checkbox will turn off
modulation for all audio, pilot, and RDS signal and only the carrier will be transmitted.
On/Off
17 Turn on or off the L-R channel for stereo or mono FM transmit mode. On/Off
18 Turn on or off the compressor for the audio signal. On/Off
19 Attack time. Set the attack time for the compressor in milliseconds. 0.5–5 ms
20 Release time. Set the release time for the compressor in milliseconds. 100–1000 ms
21 Threshold. Set the thresh old for th e co mp re ssor. –40 to 0 dBFS
22 Input Gain. Set the compressor gain. 0 to 20 dB
23 Limiter Release Time. Set the limiter release time constant.
(Not available in Si4710-A10). 0.5,1,2,3,4,5,6,7,8,
9,10,20,30,40,50,
75,100 ms
24 Turn on or off the limiter feature. On/Off
25 Audio Level Indicators. Overmodu lation, Limiter, Audio input level below low-level
threshold (silence detection), and Audio input level below high-level threshold (loud
detection). To enable these four indicators, check the Enable Interrupts box. These
indicators are sticky; to clear them, click the Reset button.
26 Mode switch buttons to switch between dif f erent mo des on the device. See section 4 for
more information.
Table 8. FM Transmitter Main Window Descriptions (Continued)
# Description Range
Si47xx-EVB
Rev. 0.8 45
5.5. FM Transmitter Settings (Analog Mode) Property Window
FM transmitter settings can be configured through the properties window by selecting WindowProperties.
Properties are grouped into categories which can be selected from the drop-down box in the upper right of the
window. For convenience, all FM transmitter properties are also located in WindowPropertiesTX: All. Analog
mode properties will be available if Analog Mode was selected in the initialization window.
Figure 39. FM Transmitter Settings in Analog Mode Property Window
Table 9. FM Transmitter Settings in Analog Mode Property Window Descriptions
Item Description Range Devices
Line Input
Attenuation (k)The Si47xx has four attenuator settings (636, 416,
301, and 190 mVp). It will tell the maximum audio
input signal that the user can give to the LIN and RIN
input. The attenuator setting will determine the audio
input impedance (LIN and RIN) of the device.
190 mVp,
301 mVpk,
416 mVp,
636 mVpk
All
Maximum Line Input
Level (mVpk) The maximum line input level of the max audio input
signal that the user supplies to the device. This num-
ber has to be less than or equal to the attenuation set-
ting. The max line input level will correspond to the
max audio deviation se t in the audio deviation window
on the main GUI. Make sure that the actual audio
input signal does not exceed this limit, otherwise the
audio signal will become distorted.
0–Line Input Attenu -
ation All
Reference Clock
Frequency (Hz) This field is used to specify the frequency of the
reference clock. The input to the RCLK pin divided by
the prescaler is the reference clock. The reference
clock must be in the range of 31130 to 34406 Hz.
31130–34406 Hz All
Si47xx-EVB
46 Rev. 0.8
Reference Clock
Prescaler This field is used to specify the prescaler value. The
input to the RCLK pin divided by the prescaler is the
reference clock. The reference clock must be in the
range of 31130 to 34406 Hz.
1–4095 All
Audio Level High
Duration (mSec) Set the duration for the audio level high before an
interrupt is generated. 0–65535 All
Audio Level High
Threshold (dBFS) An interrupt will be generated when the audio input
level rises above this threshold for the duration greater
than the Audio Level High Duration setting. This may
also be called loud dete ct ion indic at or.
–70 to 0 All
Audio Level Low
Duration (mSec) Set the duration for the audi o level low be fore an inter-
rupt is generated. 0–65535 All
Audio Level Low
Threshold (dBFS) An interrupt will be generated when the audio input
level falls below this threshold for the duration greater
than the Audio Level Low Distortion setting. This may
be called silence detection indicator.
–70 to 0 All
Varactor Capacitor
Overwrite This field allows the user to manually overwrite the
tuning capacitance. A number 0 indicates that the
tuning cap is automatically adjusted. Any number
other than 0 (1 to 191) will indicate that the tuning cap
is manually adjusted.
Automatic: 0,
Manual: 1–191 All
Table 9. FM Transmitter Settings in Analog Mode Property Window Descriptions (Continued)
Item Description Range Devices
Si47xx-EVB
Rev. 0.8 47
5.6. FM Transmitter Settings (Digital Mode) Property Window
FM transmitter settings can be configured through the properties window by selecting WindowProperties.
Properties are grouped into categories which can be selected from the drop-down box in the upper right of the
window. For convenience, all FM transmitter properties are also located in WindowProperties TX: All. Digital
mode properties will be available if CODED or SPDIF modes was selected in the initialization window.
Figure 40. FM Transmitter Settings in Digital Mode Property Window
Table 10. FM Transmitter Settings in Digital Mode Property Window Descriptions
Item Description Range Applicable
Devices
Reference Clock
Frequency (Hz) This field is used to specify the frequency of the refer-
ence clock. The input to the RCLK pin divided by the
prescaler is the reference clock. The reference clock
must be in the range of 31130 to 34406 Hz.
31130–34406 Hz All
Reference Clock
Prescaler This field is used to specify the prescaler value. The
input to the RCLK pin divided by the prescaler is the
reference clock. The reference clock must be in the
range of 31130 to 34406 Hz.
1–4095 All
Digital Format Sets I2S of left justified digital format. Left-Justified, I2S,
DSP (MSB on first
DCLK), or DSP
(MSB on second
DCLK)
All except
Si4710-A10
Digital Sample
Precision Select the prec isio n of the dig ital audio inp ut . 8, 16, 20, 24 bits All
Digital Sample
Rate (Hz) Sets the DFS digital sample rate. Must be set to 0 Hz
before DCLK/DFS is removed. 0, 32000–
48000 Hz All except
Si4710-A10
Si47xx-EVB
48 Rev. 0.8
Digital Mono
Mode Enable Select between Digital Stereo or Mono. On/Off All
Digital DCLK
Falling Edge Select between using rising edge or falling edge of
DCLK when sampling Digital Input (DIN) data. On/Off All
Audio Level Low
Threshold (dBFS) An interrupt will be generated when the audio input
level falls below this threshold for the duration greater
than the Audio Level Low Distortion setting. This may
be called silence detection indicator.
–70 to 0 All
Audio Level Low
Duration (mSec) Set the duration for the audio level low before an
interrupt is generated. 0–65535 All
Audio Level High
Threshold (dBFS) An interrupt will be generated when the audio input
level rises above this threshold for the duration greater
than the Audio Level High Duration setting. This may
also be called loud detection indicator.
–70 to 0 All
Audio Level High
Duration (mSec) Set the duration for the audio level high before an
interrupt is generated. 0–65535 All
Varactor Cap acitor
Overwrite This field allows the user to manually overwrite the
tuning capacitance. 0 indicates that the tuning cap is
automatically adjusted. Any number other than 0 (1 to
191) will indicate that the tuning cap is manually
adjusted.
Automatic: 0
Manual: 1–191 All
Table 10. FM Transmitter Settings in Digital Mode Property Window Descriptions (Continued)
Item Description Range Applicable
Devices
Si47xx-EVB
Rev. 0.8 49
5.7. CODEC Settings
In addition to other digital mode properties, a category of CODEC settings may configured by selecting
WindowPropertiesCODEC Settings if CODEC mode was selected in the initialization window.
Figure 41. CODEC Settings Property Window
Table 11. CODEC Settings Property Window Descriptions
Item Description Range
Misc.
CODEC Precision Select the CODEC digital audio output precision. 16, 20, 24 bits
CODEC Output Format Select the CODEC digital audio format between I2S, Left Justi-
fied, DSP (MSB on first DCLK), or DSP (MSB on second DCLK). Left-Justified, I2S, DSP
(MSB on first DCLK), or
DSP (MSB on second
DCLK)
CODEC Sampling Rate Select the sample rate of the CODEC digital audio output. 32 or 48 kHz
CODEC Channel Swap Select whether th e CODEC digital output L-R data is normal or
swapped. On/Off
CODEC Invert Clock Select between using rising edge or falling edge of DCLK when
sampling Digital Input (DIN) data. On/Off
Si47xx-EVB
50 Rev. 0.8
5.8. SPDIF Settings
In addition to other digital mode properties, a category of SPDIF settings may be configured by selecting
WindowPropertiesSPDIF Settings if SPDIF mode was selected in the initialization window.
Note: SPDIF will not be supported on new EVBs as of February 14, 2011. These properties will not be available through the
GUI in conjunction with those boards.
Figure 42. SPDIF Settings Property Window
Table 12. SPDIF Settings Property Window Descriptions
Item Description Range
Misc.
SPDIF Invert Clock Select between using rising edge or falling edge of DCLK when
sampling Digital Input (DIN) data. On/Off
SPDIF Output Format Select the SPDIF digital audio format between I2S or Left Justified. Left-Justified or I2S
Si47xx-EVB
Rev. 0.8 51
5.9. FM Transmitter Receive Power Scan Window
The Receive Power Scan window enables the user to scan the entire FM band to find one or more candidate
channels on which to transmit, where candidate channels are defined as those with the lowest received power.
Selecting WindowPower Scan will launch the Receive Power Scan Window as shown in Figure 43. The band
and channel spacing can be selected and the number of regions can be set to return one to ten candidate
channels. The number of channels to average can be set to 1, 3, 5, or 7. Selecting “To Presets “will save the
candidate channels to the GUI presets. Refer to "AN307: Si4712/13/20/21 Receive Power Scan" for additional
information on the RPS feature and algorithm.
Figure 43. Receive Power Scan Window
Si47xx-EVB
52 Rev. 0.8
5.10. FM Transmitter Radio Data Service (RDS)
The RDS/RBDS feature is available with the Si4711/13/21. This user guide assumes that the user is already
familiar with the RDS/RBDS standard. If necessary, the user may refer to the following documents to become
familiar with the RDS/RBDS standard.
United States RBDS Standard by National Radio Systems Committee, April 9, 1998.
RDS Universal Encoded Communication Protocol Version 5.1 by European Broadcasting Union, Augu st
1997.
Silicon Labs “AN243: Using RDS/RBDS with the Si4701/03.”
In order for the user to transmit RDS, check the RDS On box. Failure to turn on RDS means that the RDS data will
not be transmitted. The following picture illustrates the RDS On box that should be turned on.
Figure 44. Turning RDS On in the FM Transmitter Main Window
After the RDS transmission is enabled, click on WindowRDS Transmit Data to go to the RDS Transmit Data
screen. This window allows the user to configure RDS data to be transmitted and also allows the user to gain
insight to the Si4711/13/21 RDS capability.
Si47xx-EVB
Rev. 0.8 53
Figure 45. RDS Transmit Window
Table 13. RDS Transmit Window Descriptions
Item Description
General
RDS/RBDS Selection Select either RDS format (Europe) or RBDS format (US).
Program Type (PTY) Select the available Program Type (PTY) from the pulldown menu.
PTY Dynamic Select whether the PTY will be dynamic or static.
PI Enter Program Identification (PI) code here.
Program Service
Program Service Messag es Enter up to 12 different Program Service (PS) Messages. Each PS consists of a
maximum 8 characters. Messages are ordered left to right, top to bottom.
Load Msgs Load the PS messages into the device.
Repeat Count Enter how many time eac h PS will be repeated before sending the next PS.
Message Count Enter how many message s of the loaded PS that will be transmitted.
Mix Select the mix percentage between transmitting the Program Service or Buffers.
Alternate Frequency Part of RDS Group Type 0 (PS): Enter Alternate Frequency if it is available.
Artificial Head Part of RDS Group Type 0 (PS): Enter whether Artificial Head is On or Off.
Si47xx-EVB
54 Rev. 0.8
Stereo Part of RDS Group Type 0 (PS): Enter whether the transmitted audio is Stereo or
Mono.
Audio Compression Part of RDS Group Type 0 (PS): Enter whether the Audio Compression is On or Off.
Traffic Program Part of RDS Group Type 0 (PS): Enter whether Traffic Program is available or not.
Traffic Announcement Part of RDS Group Type 0 (PS): Enter whether Traffic Ann ouncement is availa ble or
not.
Speech Part of RDS Group Type 0 (PS): Enter between Speech or Music transmission.
Buffers
Radio Text Enter the RDS Group Type 2 Radio Text (RT) messages that will be loaded into
either the circular or FIFO buffer.
Radio Te xt: A/B Flag Part of RDS Group Type 2 (RT): Enter whethe r the A/B Flag is set or not in entering
the RT. This A/B Flag will tell the receiver to clear the display when the flag toggles
from one st ate to the other.
Radio Text: Add to Circular Add the RT messages that are entered into the GUI circular buffer queue.
Radio Text: Add to FIFO Add the RT messages that are entered into the GUI FIFO buffer queue.
Manual Group Entry: B Enter manual RDS entry block B. With this window, you can transmit all RDS Group
Types 0 through 15.
Manual Group En try: C Enter manual RDS entry block C. With this window , yo u can transmit all RDS Group
Types 0 through 15.
Manual Group En try: D Enter manual RDS entry block D. With this window , yo u can transmit all RDS Group
Types 0 through 15.
Manual Group Entry: Add to
Circular Add the RDS manual entry values into the GUI circular buffer queue.
Manual Group Entry: Add to
FIFO Add the RDS manual values into the GUI FIFO buffer queue.
Circular Indicator showing the GUI circular buf fer queue.
Circular: Size (Blocks) I nd ica to r sho win g the size (i n blocks) of the circular buffer. The total size of the
buffer is 128, which is shared between the circular and FIFO buffers. To adjust the
size, change the size in the FIFO buffers.
Circular: Delete Group Delete the currently selected group in the GUI circular buffer queue.
Circular: Clear Buffer & Send Clear the circular buffer on the device and send the messages in the GUI circular
buffer queue to the device.
FIFO Indicator showing the GUI FIFO queue.
FIFO: Size (Blocks) Indicator showing the size (in blocks) of the FIFO buffer. Adjusting the size of the
FIFO will also adjust the size of the circular buffer. The total of those two buffers is
128 blocks.
FIFO: Add Time This will get the current time and format it into RDS Group Type 4 Clock & Time
(CT), and add it to the GUI FIFO buffer queue.
FIFO: Delete Group Delete currently selected group in the GUI FIFO buffer queue.
FIFO: Clear Buffer & Send Clear the FIFO buffer on the device and send the message in the GUI FIFO buffer
queue to the device.
Table 13. RDS Transmit Window Descriptions
Item Description
Si47xx-EVB
Rev. 0.8 55
There are 16 different group types in the RDS/RBDS standard, and for every group the following information is
always transmitted:
1. Program Identification (PI)
2. Program Type (PTY)
The GUI makes it easy to send data in three of the following group types:
1. Group Type 0: Program Service (PS)
2. Group Type 2: Radio Text (RT)
3. Group Type 4: Clock Time (CT)
It is possible to send data in the other group types, but the user has to manually enter the data in hexadecimal
code.
Because of the complexity of the RDS/RBDS standard, the explanation of the RDS Transmit Data window is
divided into three sections: Basic, Intermediate, and Advanced.
Si47xx-EVB
56 Rev. 0.8
5.10.1. Basic
The RDS Transmit Window is divided into three categories:
1. General
2. Program Service
3. Buffers
In the basic section, we will cover two out of the three categories: the General and Program Service. In the General
category, the user can set the PI and PTY data. In the Program Service, the user can set the PS data (Group Type
0). The following diagram shows a step-by-step explanation:
Figure 46. Basic RDS Message Illustration
1. First select whethe r you wan t to tran sm it in RDS for m at (Eur op e) or RBDS form at (US).
2. Type in the Program Identification in this field. Program Identification is a 16-bit code assigned to an
individual station.
3. Select the Program Type in the pull down menu here. Some examples include news, information, sports,
talk, rock, etc.
4. Enter the Program Service (PS) in the boxes provided. You can enter a maximum of 12 different PS
messages, in whic h ea ch PS mess ag e ca n con tain a maxim u m of 8 char ac te rs.
a. Repeat Count: Enter how many times you want each PS message to be transmitted before sending
the next PS message.
b. Message Count: Enter how many of the 12 PS messages that you actually wa nt to tra nsm it.
c. Mix: Select 100 perc ent.
5. Click Send Message button here. Now the RDS will transmit the PS message along with the PI and PTY.
You should see these data in your RDS receiver.
2
3
4
1
5
Si47xx-EVB
Rev. 0.8 57
5.10.2. Intermediate
In the intermediate section, we will cover the buffers category of sending the RDS data with the device, in particular
we will send Group Type 2 (Radio Text) and Group Type 4 (Clock Time).
The following diagram shows a step-by-step procedure to send the buffers data in addition to the General and
Program Service data covered in the basic section.
Figure 47. Intermediate RDS Message Illustration
1. Select the Mix percentage that you want between transmitting the data in Program Service and the data in
the Buffers. A mix percentage of 100% means that you will always transmit the PS message regardless of
what is contained in the Buffers, whereas a mix percentage of 0% means that you will always transmit the
data in the Buf fers regardless of what is cont ained in the PS. If the buf fers are empty, the PS messages will
be transmitted all the time regardless of the mix percentage.
2. Enter the Radio Text message that will be transmitted. After entering the RT message, click either the "Add
to Circular" button or the "Add to FIFO" button. The RT message will be encoded according to the RDS
Group Type 2 rule.
a. Clicking "Add to Circular" button means that you add the RT message into the GUI Circular Buff er
queue. Note that the message itself has not been uploaded into the Circular Buffer inside the device
until the Clear Buff & Send is clicked.
b. Clicking "Add to FIFO" means that you upload the RT message into the GUI FIFO Buffer queue. Note
that the message it self has not been uploaded into the FIFO Buffer inside the device until the Clear
Buff & Send is clicked.
3. Enter the size of the FIFO that you want here. The device buffer has a total of 128 blocks, which is shared
by the circular buffer and the FIFO. Therefore, the circular buffer size (shown in 3a) will be the remainder of
the 128 blocks minus the FIFO size.
4. Clicking this "Clear Buff & Send" button will upload the message from the GUI Circular Buffer queue into
the Circular Buffer inside the device. The Circular Buffer on the part will repeated ly send the message
contained in the buffer. Note that the messages in the circular buffer will be transmitted only if the PS Mix
2
3
4
1
5
3a
6
Si47xx-EVB
58 Rev. 0.8
value is set to anything other than 100%.
5. Clicking the "Add Time" button here will add the current time as a RDS Group Type 4 message to the GUI
FIFO Buffer queue.
6. Clicking the "Clear Buff & Send" button will upload the message from the FIFO Buffer Indicator Window
into the FIFO Buffer inside the device. The FIFO Buffer on the part will only send the messages contained
in the buffer once. A good example of using FIFO buffer is when you want to send the time data. Time is
something that occurs only once, so it will not be beneficial to upload time to the circular buffer and transmit
it continuously. Refer to step 5 for information on se nding time data. Note that the messages in the FIFO
buffer will be transmitted only if the PS Mix value is set to anything other than 100%.
5.10.3. Adva n ce d
In the advanced section, we will cover the remaining RDS topics.
Figure 48. Advanced RDS Sending Illustration
1. Dynamic: This tells whether the PTY code is static or dynamic.
2. Alternate Frequency: This provides the ability to inform the receiver of a single alternate frequency. This
field is transmitted along with the Group Type 0 (PS).
3. Miscellaneous bits in Group Type 0 (PS):
a. Artificial Head: 0 = Not Artificial Head; 1 = Artificial Head
b. Stereo: 0 = Mono; 1 = Stereo
c. Audio Compressor: 0 = Not compressed; 1 = Compressed
d. Traffic Program (TP): 0 = No TP; 1 = TP
e. Traffic Announcement (TA): 0 = No TA; 1 = TA
f. Speech: 0 = Speech; 1= Music
4. A/B Flag: This is an important flag in the RDS Group Type 2 (RT). Checking this box when a Radio Text is
2
3
4
1
5
6
7
8
9
Si47xx-EVB
Rev. 0.8 59
uploaded means that the RT is uploaded with the flag set. Un-checking this box when an RT is uploaded
means that the flag is not set. Th is flag tells the receiver th at when the flag togg les from se t to reset or vice
versa, the receiver will clear the display before showing the next RT.
5. Manual Group Entry: Use this box to upload the RDS data manually. You can use this box to upload
messages from the Group Type for which the GUI does not have encoding support. For these messages,
the user must encode the messages into hexadecimal code.
6. Circular Buffer Indicator: This displays the message that gets uploaded into the Circular Buffer in
hexadecimal code. This can be useful to see how the Group Type 0 (PS), Type 2 (RT), and Type 4 (CT) is
encoded into RDS data.
7. Delete Circular Buffer Group: This deletes a group that is selected in the Circular Buffer Indicator.
8. FIFO Buffer Indicator: This displays the message that gets uploaded into the FIFO buffer in hexadecimal
code.
9. Delete FIFO Buffer Group: This deletes a group that is selected in the FIFO Buffer Indicator.
Si47xx-EVB
60 Rev. 0.8
5.11. FM Tr ansmitte r Register Map Window
The register map window allows the user to manually program the de vice by send ing command s to the chip. Refer
to “AN332: Si47xx Programming Guide” to manually program the device. Clicking on WindowRegister Map will
launch the Register Map Window as shown in Figure 49.
Figure 49. FM Transmitter Register Map Window
Si47xx-EVB
Rev. 0.8 61
6. FM Receiver GUI
The first Si47xx window is the Initialization window as shown in Figure 50.
Select the FM receiver function.
As an FM receiver, analog audio out is available on pins 13 and 14.
6.1. Configuring the Si47xx as an FM Receiver
Select the device, busmode, firmware revision, and initial part settings and then click Initialize. A new window
displaying "Initializing FM Receiver" will appear. If you check “Use XOSCEN,” the daughtercard crystal and on-chi p
oscillator will be used to clock the Si47xx. Crystal operation is not supported on Si474x-EVB (that support s Si4740/
41/42/43/44/45) and Si4749-EVB. You can use the EVB Audio Settings drop down box to select the audio mode
used by the Si47xx part. See Section 2.1.4 of the Si47xx-EVB User’s Guide for more information on this setting.
The Si4749 can also be programmed as an RDS only tuner. This selection is available through the EVB Audio
Setting drop down bo x as we ll.
Note: As of February 2011, SPDIF is not supported on new EVBs. Modes of operation requiring the SPDIF will not be available
in the initialization window for those boards.
Figure 50. FM Receiver Initialization
Si47xx-EVB
62 Rev. 0.8
6.2. FM Receiver Main Window
The FM receiver main window will appear after initialization.
Figure 51. FM Receiver Main Window
Figure 52. FM Receiver Main Window for Si474x
1 2 3
45
6
1
Si47xx-EVB
Rev. 0.8 63
Table 14. FM Receiver Main Window Descriptions
# Name Descriptions
1 Tune/Seek Tune Down (<), Tune Up (>) buttons execute a single channel step according to the
channel spacing setting. The channel spacing setting can be set in the property window.
Seek down (<<), Seek Up (>>) buttons execute a seek up or down to the next received
FM signal meeting or exceeding th e seek settings within the sele ct ed ban d . The se ek
setting Received Signal Strength Indicator (RSSI) and Signal to Noise Ratio (SNR)
threshold can be set in the property window.
2 Freq Slider,
AFC Rail Indicator,
Mono/Stereo
Indicator,
Pilot Indicator,
Stereo Blend
Indicator,
Valid Indicator
The Frequency Display indicates the frequency in MHz. To change the Frequency, drag
the pointer in the Frequency Slider Bar to the desired frequency. The frequency may also
be changed by changing the value in the display.
AFC Rail indicator will be red if the tuned frequency is in an AFC rail st ate, otherwise the
indicator will be grey.
The Mono/S tereo indicator will switch to stereo if the blend ratio is greater than 0 and the
Pilot is present.
The Pilot indicator will be green if the received FM signal has a pilot signal.
The Stereo Blend indicator will be green if the part goes into linear blend between stereo
and mono. Full mono is indicated by 0% and full stereo is indicated by 100%.
The Valid indicator will be green if the FM frequency meets the RSSI and SNR seek
settings in the property window.
3 Volume, Mute Select the Si47xx output volume (0-63) by moving the slider bar pointer. Press the Mute
button to mute the Si47xx radio. If the radio is muted, the button will be red. Pre ss th e
Mute button again to remove the muting.
4 Auto Scan,
To Preset,
Select Stn
The Auto Scan button will find all the stations with an RSSI and SNR above the seek
settings in the property window. After the scan is completed, the number of stations
found will be displayed and each station will be available in the drop down box. Also, a
red indicator mark will be displayed on the Frequency Slider Bar (2) for each station. The
"To Presets" Button will program the preset buttons (5) with the 12 strongest stations.
5Presets
Press the desired button to tune to the fre quency displayed on the button. To store a new
value to the preset button, tune to the desired frequency and then press and hold the
desired button for 1.5 seconds. The button will then change to indicate the stored
frequency.
6 RSSI/SNR/
Multipath/Stereo/Hi-
Cut/SoftMute
The RSSI indicator displays the RSSI of the signal in dBuV.
The SNR indicator displays the SNR of the received signal in dB.
The Multipath indicator will be green if Multipath is detected. This indicator is only
available in Si474x products. Refer to Figure 60.
The Stereo Blend indicator will be green if the part goes into linear blend between stereo
and mono. Full mono is indicated by 0% and full stereo is indicated by 100%.
The Hi-Cut indicator will indicate the percentage of hi-cut being applied to the audio
signal. This indicator is only available in Si4742/43/44/45 products. Refer to Figure 60.
The Soft Mute indicator will indicate the amount of attenuation in dB applied to the audio
signal.
Si47xx-EVB
64 Rev. 0.8
6.3. FM Receiver Settings Property Window
FM receiver settings can be configured through the properties window by selecting WindowProperties.
Properties are grouped into categories which can be selected from the drop-down box in the upper right of the
window. For convenience, all FM receiver properties are also located in WindowPropertiesFM: All.
Figure 53. FM Receiver Settings Property Window
Si47xx-EVB
Rev. 0.8 65
Figure 54. FM Receiver Setting Property Window for Si474x (1 of 2)
Si47xx-EVB
66 Rev. 0.8
Figure 55. FM Receiver Setting Property Window for Si474x continued (2 of 2)
Si47xx-EVB
Rev. 0.8 67
Table 15. FM Receiver Settings Property Window Descriptions
Items Description Range Applicable Devices
AGC Attack Rate Larger values provide slower attack
and smaller values provide faster attack. 4–248 Si474x
AGC Index If AGC override is set to “ON,” this property
will determine the AGC setting. 0–26 All
AGC Override If set to “ON,” the AGC property will be used
to set the value of the AGC. If set to “OFF,”
the AGC setting will be automatically
determined by the part.
ON/OFF All
AGC Release Rate Larger values provide slower
release and smaller values provide faster
release.
4–248 Si474x
De-emphasis Selects de-emphasis of 50 µs or 75 µs. 50 µs, 75 µs All except Si4749
Reference Clock
Frequency (Hz) This field is used to specify the frequency of
the reference clock. The input to the RCLK
pin divided by the prescaler is the reference
clock. The reference clock must be in the
range of 31130 to 34406 Hz.
31130–
34406 Hz All
Reference Clock
Prescaler This field is used to specify the prescaler
value. The input to the RCLK pin divided by
the prescaler is the reference clock. The
reference clock must be in the range of
31130 to 34406 Hz.
1–4095 Hz All
Digital DCLK Falling
Edge ON uses falling edge of DCLK for sampling. ON, OFF Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
Digital Format Format of digital audio output. I2S, Left-Justi-
fied, DSP Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
Digital Mono Mode
Enable ON enables mono in digital audio output. O N, OFF Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
Si47xx-EVB
68 Rev. 0.8
Digital Sample
Precision Digital audio output bit precision. 8-bit, 16-bit, 20-
bit, 24-bit Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
Digital Sample Rate
Hz DFS sample rate for digital input signal.
Recommended values are: 32 kHz,
44.1 kHz, or 48 kHz. Over-sampling rate
must be set in order to satisfy a minimum
DCLK of 1 MHz. Sample rate must be set to
0 before DCLK/DFS is removed.
0, 32000–
48000 Hz Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
Hi-Cut Attack Rate Set the rate at which hi-cut lowers the cutoff
frequency. If set to 0, hi-cut attack is
disabled.
0 - 32767 Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Hi-Cut Cutoff Max
Frequency Sets the maximum audio transition
frequency bandwidth. Disabled, 2, 3, 4,
5, 6, 8, and
11 kHz
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Hi-Cut Cutoff Min
Frequency Sets the minimum band limit transition
frequency for hi-cut. Disabled, 2, 3, 4,
5, 6, 8, and
11 kHz
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Hi-Cut Multipath End
Threshold Sets the multipath level at which hi-cut
reaches maximum limit. 0 -100 Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Hi-Cut Multipath
Trigger Threshold Sets the multipath level at which hi-cut
begins to band limit. 0 -100 Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Hi-Cut Release Rate Set the rate at which hi-cut increases the
cutoff frequency. If set to 0, hi-cut release is
disabled.
0 - 32767 Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items Description Range Applicable Devices
Si47xx-EVB
Rev. 0.8 69
Hi-Cut SNR High
Threshold Sets the SNR level at which hi-cut begins to
band limit. 0 – 127 dB Si4 740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Hi-Cut SNR Low
Threshold Sets the SNR level at which hi-cut reaches
maximum band limit. 0–127 dB Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Noise Blanker Delay Delay in microseconds before applying
noise blanking to the original samples. 125–219 µs Si4742/43/44/45
Noise Blanker
Detect Threshold Set s the threshold for detecting impulses in
dB above the noise floor. If se t to 0, impulse
noise blanking is disabled.
0 – 90 dB Si4742/43/44/45
Noise Blanker IIR
Filter Sets the cut-off frequency for the low pass
filter that is used for noise floor estimation in
noise blanker detection.
300–1600 Si4742/43/44/45
Noise Blanker
Interval Interval original samples are replaced by
interpolated clean sample s. 8 – 48 µs Si4742/4 3 /4 4/4 5
Noise Blanker Rate Maximum noise blanking rate. 100 – 6400 Hz Si4742/43/44/45
Antenna Type Receive antenna selection. Headphone or
short antenna Si4704/05/06/2 0/21 only
Channel Filter Selects the channel filter to be used before
demodulation. Automatic,
110 kHz, 84 kHz,
60 kHz, and
40 kHz
Si4706, Si4749, Si4704/05/
30/31/34/35/84 /85-D50 and
later
Band Frequency band US/Europe:
87.5–108 MHz
Japan: 76–
90 MHz
Japan Wide: 76–
108 MHz
All
Seek Band Bottom
(MHz) The lower freq ue n cy limit for the seek
function. This is set automatically by the
GUI based on band and spacing selection.
US/Europe:
87.5 MHz
Japan: 76 MHz
Japan Wide:
76 MHz
All
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items Description Range Applicable Devices
Si47xx-EVB
70 Rev. 0.8
Seek Band Top
(MHz) The upper freq ue n cy limit for th e see k
function. This is set automatically by the
GUI based on band and spacing selection.
US: 107.9 MHz
(200 kHz
spacing)
Europe:
108 MHz
(100 kHz
spacing)
Japan: 90 MHz
Japan Wide:
108 MHz
All
Max Tune Error
(kHz) Selects the maximum tuning frequency
error before the AFC rail indicator is set. 0–255 kHz All
Seek Mode Select between stopping the seek at the
band limits o r wra ppi ng at the band lim its to
return to the starting frequency.
Stop at limit or
wrap at limit All
Seek RSSI
Threshold (dBuV) The seek RSSI threshold level used for
seek and scan functions. 0–255 dB All
Seek SNR
Threshold (dB) The seek SNR threshold level used for seek
and scan functions. 0–255 dB All
Spacing Channel spacing 50, 100, or
200 kHz All
Soft Mute Attack
Rate
(dB/s)
Sets the attack rate for entering soft mute. 1–3 19 99 dB/s Si4706-C30 and late r,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Soft Mute
Attenuation Slope
(dB/dB)
Soft mute attenuation slope specifies the
slope of the attenuation curve when the
signal SNR is below the soft mute SNR
threshold. It is specified as dB/dB where th e
attenuation applied is simply the value
specified here times the amount the signal
SNR is below the threshold.
1–63 Si4704/05/06/3x-C40 and
later, Si4740/41/42/43/44/45
Soft Mute Max
Attenuation (dB) Maximum attenuation for soft mute. 0–31 dB,
0 = disable soft
mute
All except Si4749
Soft Mute Release
Rate
(dB/s)
Sets the release rate for leaving soft mute. 1–31999 dB/s Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Soft Mute SNR
Threshold (dB) SNR threshold level used to engage soft
mute. 0–15 dB All except Si4749
Soft Mute Rate Selects the soft mute rate. 1–255 dB Si4706/07/20/21/84/85-B20
and earlier,
Si4704/05/30/31/34/35-C40
and earlier
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items Description Range Applicable Devices
Si47xx-EVB
Rev. 0.8 71
Blend Multipath
Attack Rate Attack rate associat ed with multipath when
adjusting blend. If set to 0, attack would be
disabled.
0–32767 Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Blend Multipath
Mono Threshold Multipath input level above which the tuner
blends into full mono. 0–100 Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Blend Multipath
Release Rate Release rate associated with multipath
when adjusting blend. If set to 0, release
would be disabled.
0–32767 Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Blend Multipath
Stereo Threshold Multipath input level below which the tuner
blends into full stereo. 0–100 Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Blend RSSI Attack
Rate Attack rate associated with RSSI when
adjusting blend. If set to 0, attack would be
disabled.
0–32767 Si4706-C30 and l ater,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Blend RSSI Mono
Threshold (dB) RSSI level below which the tuner blends
into full mono. 0–127 dB Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Blend RSSI Release
Rate Release rate associated with RSSI when
adjusting blend. If set to 0, release would be
disabled.
0–32767 Si4706-C30 and l ater,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Blend RSSI Stereo
Threshold (dB) RSSI level above which the tuner blends
into full stereo. 0–127 dB Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Blend SNR Attack
Rate Attack rate associated with SNR when
adjusting blend. If set to 0, attack would be
disabled.
0–32767 Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later ,
Si4730/31/34/35/84/85-D50
and later
Blend SNR Mono
Threshold (dB) SNR level below which the tuner blends into
full mono. 0–127 dB Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later ,
Si4730/31/34/35/84/85-D50
and later
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items Description Range Applicable Devices
Si47xx-EVB
72 Rev. 0.8
Blend SNR Release
Rate Release rate associated with SNR when
adjusting blend. If set to 0, release would be
disabled.
0–32767 Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later ,
Si4730/31/34/35/84/85-D50
and later
Blend SNR Stereo
Threshold (dB) SNR level above which the tuner blends
into full stereo. 0–127 dB Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later ,
Si4730/31/34/35/84/85-D50
and later
Stereo Blend Mono
Threshold (dB) RSSI threshold below which the tuner
blends into full mono. 0–127 dB Si4704/05/1x/2x/3x-C40 or
earlier, and Si4706-B20
Stereo Blend Stereo
Threshold (dB) RSSI threshold above which the tuner
blends into full stereo. 0–127 dB Si4704/05/1x/2x/3x-C4 0 or
earlier and Si4706-B20
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items Description Range Applicable Devices
Si47xx-EVB
Rev. 0.8 73
6.4. CODEC and SPDIF Settings
Si47xx-EVB baseboard has a Codec and an SPDIF translator for digital audio output. For tuners with digital audio
option, you can set properties for the Codec and SPDIF through the GUI. These settings can be used with AM or
FM tuners that hav e dig ital audio en abl ed .
Select WindowPropertiesCODEC and SPDIF Settings.
Note: SPDIF will not be sup ported on new EVBs as of February 14, 2011. SPDIF properties will not be available through the
GUI in conjunction with those boards. CODEC properties will be available through WindowPropertiesCODEC
Settings.
Figure 56. CODEC and SPDIF Settings Window
Table 16. CODEC and SPDIF Settings Windows Descriptions
Items Description Range
Misc.
Codec Precision Precision of the CODEC on baseboard in bits. 16-bit, 20-bit, 24-bit
Codec Output Format Format of audio output through the Codec. I2S, Left-Justified, DSP(MSB
on 1st DCLK), DSP(MSB on
2nd DCLK)
Codec Sampling Rate Sampling rate for the Codec in kHz. 32 kHz, 48 kHz
Codec Channel Swap Determines if channels need to be swapped on the
Codec. ON, OFF
Codec Invert Clock ON inverts the digital clock. ON, OFF
SPDIF Output Format Format of audio output through the SPDIF. I2S, Left-Justified
SPDIF Invert Clock ON inverts the digital clock. ON, OFF
Si47xx-EVB
74 Rev. 0.8
6.5. FM Receiver RDS Window
The FM receive RDS window allows the user to view program service, program type, PI code, radio text, enhanced
radio text, radio text plus, clock, group error rate, sync time and display times, an alternate frequency list, and
group statistics. Sele ct WindowRDS Receive Data . Click on Radio Text Plus (RT+) to get the R T+ class and item
information.
Figure 57. FM Receiver Settings RDS Window
12
3
4
5
6
7
8
Si47xx-EVB
Rev. 0.8 75
Table 17. FM Receiver Settings RDS Window Descriptions
# Items Description
1 Radio Data Service PS: Program Service Indicator (8 characters).
RT: Rad io Text In dica to r (64 ch ar acters).
eRT: Enhanced Radio Text Indicator
CT: Clock Indicator showing time, day, and date.
Group Error Rate indi cates the percentage of uncorrectable groups received.
PTY: Program Type Indicator
PI: PI Code Indicator
2 Sync Times Time required to synchronize, display radio text, and display program service.
3RDS
Synchronization
Indicator
Indicates that RDS is synchronized.
4 Alternate
Frequency
Indicator
When present, shows a list of alternate frequencie s. Alternate frequency methods A an d
B are supporte d.
5 Group Counters Pro vides the total number a nd percent age breakdown of group types 0–15, A/B. To view
this information, select WindowRDS Group Counters. Please refer to Figure 58.
6 Block Counters Provides the block error rates after tune and after RDS Sync.
After Tune Error Rate: After tune (STC interrupt), the ideal number of blocks the FM
tuner should have received is calculated. Also, the number of accepted blocks and
errors are calculated.
Error Rate = number of errors / number of ideal blocks after tune.
After Sync Error Rate: After RDS Sync (RDS interrupt), the ideal number of blocks the
FM tuner should have received is calculated. Also, the number of accepted blocks and
errors are calculated.
Error Rate = number of errors / number of ideal blocks after sync
Because it usually takes 10 0~200ms for the FM tuner to synchronize to RDS data (STC
interrupt always comes before RDS interrupt), "After Tune Error Rate" will always be
greater than "After Sync Error Rate." After a long time, both er ror rates should
consolidate at similar levels.
7Reset
Resets the block counter numbers.
8 Radio Text Plus Radio Text Plus (RT+) Class and Item Information Indicator
Si47xx-EVB
76 Rev. 0.8
Figure 58. RDS Group Counters Window
Si47xx-EVB
Rev. 0.8 77
6.6. FM Receiver RDS Settings
RDS settings are configured by selecting WindowPropertiesFM Receiver RDS Settings.
Figure 59. FM Receiver RDS Settings Window
Si47xx-EVB
78 Rev. 0.8
Table 18. FM Receiver RDS Settings Window Descriptions
Item Description Range
Misc.
RDS State Enables and disables RDS. On, Off
RDS Error Checking (RT and PS) Selects GUI erro r checking level.
Minimum displays text as received.
Mid-range requires two duplicate
buffers before displaying text.
Maximum requires two duplicate
buffers and also ignores the A/B
flag.
Minimum, Mid-Range, Maximum
RDS Program Type Decode Selects RDS or RBDS program type
decoding. RDS, RBDS
RDS Text Decoding* Selects text decoding mode. ASCII, Big 5 (Traditional Chinese),
Default (Use system code page),
UTF-8, Unicode
RDS Group Filter Mode Selects group filter mode. Simple
mode displays a group as long as all
blocks are correctable. Verbose
(Group B Uncorre ct ed ) mo d e
displays a group e ven if one or more
blocks is uncorrectable. Verbose
(Group B Corrected ) dis pla ys a
group as long as block B is
correctable , even if blocks A, C, or D
are uncorrectable. Strict mode
displays a group only if there are no
errors in any block.
Simple, V erbose (Group B Corrected
Only), Verbose (Group B
Uncorrected), Strict
RDS Block A Error Level Sets the Block A error level above
which the entire RDS group will be
discarded.
No Block Errors
1 to 2 errors corrected
3 to 5 errors corrected
Uncorrectable
RDS Block B Error Level Sets the Block B error level above
which the entire RDS group will be
discarded.
No Block Errors
1 to 2 errors corrected
3 to 5 errors corrected
Uncorrectable
RDS Block C Error Level Sets the Block C error level above
which the entire RDS group will be
discarded.
No Block Errors
1 to 2 errors corrected
3 to 5 errors corrected
Uncorrectable
RDS Block D Error Level Sets the Block D error level above
which the entire RDS group will be
discarded.
No Block Errors
1 to 2 errors corrected
3 to 5 errors corrected
Uncorrectable
*Note: The RDS character libraries are documented in Annex E of CENELEC EN 50067: 1998.
Si47xx-EVB
Rev. 0.8 79
6.7. FM UI Settings
Figure 60. FM UI Settings Property Window
Note: UI settings window is common to all EVBs.
Table 19. FM UI Settings Property Window Descriptions
Hems Description Range
Misc.
Update Rate (sec) The time span when the UI ge ts status information
from the part. 0.2–4.0 seconds
Scan Time 1 (sec) In log band scan, the time between seeking and
retrieving data from the UI. 1–10 seconds
Scan Time 2 (sec) In log band scan, the time it takes the RDS data to
populate, if RDS is available. 1–10 seconds
Si47xx-EVB
80 Rev. 0.8
6.8. FM Receiver RSSI/SNR Graph Window
The RSSI/SNR Graph Window allows the user to plot RSSI and SNR across the FM band. Bitmap data can be
saved to file by selecting FileSave as Bitma p and tabulated da ta can be saved to file by se lec tin g File Save to
.csv.
Figure 61. FM Receiver RSSI/SNR Graph Window
Table 20. FM Receiver RSSI/SNR Graph Window Descriptions
# Items Description
1 RSSI/SNR Graph Select between drawing the RSSI, SNR graph, or both.
2Line / Bar
Select between drawing in bar mode (depicted as green) or in co ntinuous
line mode (depicted as yellow).
3Draw
Click this to start plotting the graph.
4 Seek Threshold
(RSSI/SNR) Draw the RSSI and/or SNR seek threshold as specified in the respective
properties. Th e RSSI se ek th re shold is shown in red, the SNR seek
threshold is shown in orange.
5 Valid Stations Mark valid stations based on the RSSI/SNR seek threshold settings. Valid
frequencies can also be marked.
6 Clear Click this button to clear the traces selected in the Delete Plots combo box.
1
2
3
4
5
6
Si47xx-EVB
Rev. 0.8 81
6.9. FM Receiver Register Map Window
The register map window allows the user to manually program the device by sending commands to the device.
Refer to "AN332: Si47xx Programming Guide " to manually program the device.
Figure 62. FM Receiver Register Map Window
Si47xx-EVB
82 Rev. 0.8
6.10. FM Receiver Logging Tools
The GUI provides several useful logging tools. In the tools menu, user can choose to log raw RDS data, band scan
data, device commands and channel info.
Figure 63. Logging Tools
6.10.1. Log Band Scan
Selecting ToolsLog Band Scan allows you to specify a filename and begin a scan of the entire band for RDS
data, RDS acquisition times, and the contents of each register. The scan feature starts with the first frequency in
the band (CHAN = 0) and then seeks to the first station that meets the seek criteria (SEEKTH, SKCNT, SKSNR).
When a valid station is found, the software waits at the station for the time specified by ViewSession
PreferencesScan Log After Tune Delay (sec) and then checks if RDS is available. If RDS is not available, the
software logs the register settings and seeks to the next valid station. If RDS is available, the software waits an
additional delay as specified by ViewSession PreferencesScan Log RDS Log Delay (sec). When this delay
expires, the software logs the RDS information and register settings and seeks to the next valid station. While
scanning, the software displays a green "Scanning" notice below the menu bar. The scan can be aborted by
selecting the ToolsLog Band Scan a second time. When the scan completes, the filename given is saved in
comma separated format and is available for analysis in a text editor or spreadsheet.
6.10.2. Log Raw RDS Data
Selecting ToolsLog Raw RDS Data prompts for a filename in which all RDS data will be logged in comma
separated format. The software then logs all raw RDS data that is received, the station it is received on, and the
time at which it was received. The logging will continue until ToolsLog Raw RDS Data is selected a second time
at which point the file is saved and available for analysis in a text editor or spreadsheet.
6.10.3. Log Channel Info
Selecting ToolsLog Channel Info prompts for a filename in which all register values will be logged in comma
separated format. The software then logs all register values and the time at which it was rec eived. The logging will
continue until ToolsLog Channel Info is selected a second time, at which point the file is saved and available for
analysis in a text editor or spreadsheet.
6.10.4. Log Device Commands
Selecting ToolsLog Device Commands prompts for a filename in which all software API calls and data with
timestamp data will be logged as text. The logging will continue until ToolsLog Device Commands is selected a
second time, at which point the file is saved and available for analysis in a text editor.
Si47xx-EVB
Rev. 0.8 83
6.11. FM Receiver Configuration Helper
The configuration helper is a useful tool for configuring the thresholds related to RSSI based Blend, SNR based
Blend, Multipath based blend, SNR based hi-cut, Multipath based hi-cut, and Soft Mute.
Figure 64. FM Configuration Helper
Figure 65. FM Configuration Helper Window (Multipath Based Hi-cut)
1
2
3
4
5
6
Si47xx-EVB
84 Rev. 0.8
In the example shown in Figure 65, the current level marker shows that Hi-cut filter is set at 6 kHz. This is
determined by both SNR an d multipath conditions. Current SNR is 5 dB. Hi-cut SNR Low Threshold is set at 15 dB
and hi-cut minimum frequency is set at 6 kHz. SNR is the determining factor in this case as it is already lower than
the low threshold. Graph shows th e cu rrent state of SNR (white diamon d) and m ultipath (green diamond) and p lots
for each of them that sh ow the transition b etween high and low thresholds and how the h i-cut filter frequency woul d
be adjusted accordingly. You can adjust the configuration values to see how these plots and the current state of hi-
cut would change.
Table 21. Configuration Helper Window Descriptions
# Item Description
1 Select Parame ter Selects between Hi-cut Multipath (Si4706/4x only), Hi-cut SNR(Si4706/
4x only), SoftMute, Stereo blend Multipath (Si4706/4x only), Stereo
Blend RSSI and Stereo Blend SNR (Si4706/4x only).
2 Hi-cut/ Blend/Soft Mute Graph The plot displays the device threshold and rate settings, current signal
conditions, and the calculated audio conditioning.
3 Plot Legend The plot legend includes numeric values for current signal conditions
and calculated audio conditioning.
4 Configur ation Values Configure threshold and rate properties. These values are at all times
synchronized with the values available through the Properties window.
5 Selected Parameter Description Read a detailed description of the currently selected parameter in the
Configuration Values group.
6 Close Click this button to close the Configuration Helper window.
Si47xx-EVB
Rev. 0.8 85
Figure 66. FM Configuration Helper Window (SNR Based Hi-cut)
In the example shown in Figure 66, the current level marker shows that hi-cut filter is set at 6 kHz. This is
determined by both SNR an d multipath conditions. Current SNR is 5 dB. Hi-cut SNR Low Threshold is set at 15 dB
and hi-cut minimum frequency is set at 6 kHz. SNR is the determining factor in this case as it is already lower than
the low threshold. The graph shows the current state of SNR (green diamond) and multipath (white diamond) and
plots for each of them that show the transition between high and low thresholds and how the hi-cut filter frequency
would be adjusted accor dingly. You ca n adjust the configuration valu es to see how these p lots and th e current st ate
of hi-cut would change.
Si47xx-EVB
86 Rev. 0.8
Figure 67. FM Configuration Helper Window (Softmute)
In the example shown in Figure 67, the current level marker shows that Soft Mute level is 0 d B. SNR threshold is
programmed as 4 dB and max attenuation is 16 dB. Since the SNR reported by the par t is 5 dB, which is above the
threshold, the softmute level is 0 dB. The graph shows the current state of SNR (green diamond) and plot shows
the softmute profile based on max attenuation, threshold and slope settings. You can adjust the configuration
values to see how the plot and the current state of softmute would change.
Si47xx-EVB
Rev. 0.8 87
Figure 68. FM Configuration Helper Window (SNR Based Blend)
In the example shown in Figure 68, the Current Level marker shows that Stereo % is 56%. SNR threshold is
programmed as 14 dB (and below) for full mono and 30 dB (and above) for full stereo. Since the SNR reported by
the part is in between the thresholds, the stereo level is 56%. RSSI and Multipath do not factor in here as they are
both at levels that would set the part in full stereo. The graph shows the current state of SNR (green diamond),
RSSI (white diamond), a nd multipath (yellow diamond) and plo ts for each of them that show the transition between
high and low thresholds and how the blend would be adjusted accordingly. You can adjust the configuration values
to see how these plots and the current state of blend would change.
Si47xx-EVB
88 Rev. 0.8
Figure 69. FM Configuration Helper Window (RSSI Based Blend)
In the example shown in Figure 69, the Current Level marker shows that Stereo % is 56%. RSSI threshold is
programmed as 30 dBµV (and below) for full mono and 49 dBµV (and above) for full stereo. RSSI reported by the
part is in between the t hresho lds h oweve r the fina l blen d pe rcen tage is deter mine d by SNR an d the st ereo leve l is
56%. Multipath does not factor in here as it is at a level that would set the part in full stereo. The graph shows the
current state of RSSI(green diamond), SNR (white diamond), and multipath (yellow diamond) and plots for each of
them that show the transition between high and low thresholds and how the blend would be adjusted accordingly.
You can adjust the configuration values to see how these plots and the current state of blend would change.
Si47xx-EVB
Rev. 0.8 89
In the examp le shown in Figure 70, the Curr ent Level marker shows tha t Stereo % is 50%. Multipath th reshold is
programm ed a s: 6 0% ( an d ab ov e) fo r fu ll m on o an d 2 0 % (and be lo w) for full stereo. Mu ltip a th re po rt ed by th e p ar t
is 11% which would put the part in full stereo. However the final blend percentage is determined by SNR and the
stereo level is 56%. The graph shows the current state of Multipath(green diamond), RSSI (white diamond) and
SNR (yellow diamond) and plots for each of them that show the transition between high and low thresholds and
how the blend would be adjusted accordingly. You can adjust the configuration values to see how these plots and
the current state of blend would change.
Figure 70. FM Configuration Helper Window (Multi-path Based Hi-blend)
Si47xx-EVB
90 Rev. 0.8
7. Weather Band GUI
7.1. WB Receiver Initialization
The first Si47xx window is the Initialization window as shown in Figure 71. On the function menu, select and
highlight the function of the Si47xx as a WB Receiver. Select the Boot Mode, Audio Mode, Firmware, Bus Mode,
and initial part settings and then click Initialize. A new window displaying "Initializing WB Receiver" will appear. If
you check "Use XOSCEN," the daughter card crystal and on-chip oscillator will be used to clock the Si47xx. You
can also select "(Analog Mode) to Analog Output", "(Digital Mode) to SPDIF and CODEC (Analog Output)", or
"(Analog & Digital Mode) to Analog Output and SPDIF" with the Audio Mode drop down menu.
Note: SPDIF will not b e supported on new EVBs as of Febru ary 14, 2011. Modes of opera tion requiring th e SPDIF will not be
available in the initialization window for those boards.
Figure 71. Weather Band Receiver Initialization
Si47xx-EVB
Rev. 0.8 91
7.2. Weather Band Main W indow
The weather band main window will appear after initialization.
Figure 72. Weather Band Receiver Main Window
Table 22. Weather Band Receiver Main Window Descriptions
# Name Description
1 Tune/Seek Tune Down (<), T une Up (>) buttons execute a signal channel step (25 kHz step).
Seek function is not available in the WB Receiver mode.
2Frequency Slider Bar ,
AFC Valid, Alert Tone
The Frequency Display indicates th e fr equency in MHz. To change the frequency,
drag the pointer in the Frequency Slider Bar to the desired frequency.
AFC Rail indicator will be red if the tuned frequency is in an AFC rail state;
otherwise the indicator will be grey
The Alert Tone indicator will be green if the 1050 Hz Alert Tone is detected.
3 Volume, Mute Select the Si473x output volume ( 0-63) by moving the slider bar poin ter. Press the
Mute button on the mute radio. The button will be re d if the radio is muted. Press
the Mute button again to remove the muting.
4Auto Scan,
To Preset, Select Stn Auto Scan, To Preset, Select Stn functions are not available in the WB Receiver
mode.
5StatusThe RSSI indicator displays the RSSI of the signal in dBuV. The SNR indicator
displays the SNR of the received signal in dB. The varactor is not available in the
WB Receiver mode.
6 Preset
Press the desired bu tton to tune to the fre quency displayed on the button. To store
a new value to the preset button, tune to the desired frequency and then press
and hold the desired button for 1.5 seconds. The button will then change to
indicate the stored frequ ency. This information is stored to a file and used the next
time the program is run.
7 Function The Function buttons are used to boot up the device in a different mode.
8SAME Event
Information The SAME Event Information displays the SAME Event Information. Use the up/
down arrow key to view different events. (Si4707 only)
123
4
5
67
8
Si47xx-EVB
92 Rev. 0.8
7.3. Weather Band Settings Property Window
WB receiver settings can be configured through the properties window by selecting WindowProperties.
Properties are grouped into categories which can be selected from the drop-down box in the upper right of the
window. For convenience, all WB receiver properties are also located in WindowPropertiesWB: All.
Figure 73. Weather Band Receiver Settings Property Window
Table 23. Weather Band Receiver Settings Property Window
Item Description Range Applicable
Devices
Clock Configuration Properties All
Reference Clock
Frequency (Hz) This field is used to specify the frequency of the ref-
erence clock. The input to the RCLK pin divided by
the prescaler is the reference clock. The reference
clock must be in the range of 31130 to 34406 Hz.
31130–34406 Hz All
Reference Clock Pres-
caler This field is used to specify the prescaler value. The
input to the RCLK pin divided by the prescaler is the
reference cloc k. The refere nce clock must be in the
range of 31130 to 34406 Hz.
1–4095 Hz All
Digital Output Properties All
Digital For mat Format of digital audio output. I2S, Left-Justified,
DSP All
Digital Sample Precision Digital audio output bit precision. 8-bit, 16-bit,
20-bit, 24-bit Si4743/47/49
Si47xx-EVB
Rev. 0.8 93
Digital Sample Rate Hz DFS sample rate for digital input signal. Recom-
mended values are: 32 kHz, 44.1 kHz, or 48 kHz.
Over-sampling rate must be set in or der to sa tisfy a
minimum DCLK of 1MHz. Sample rate must be set
to 0 before DCLK/DFS is removed.
0, 32000–
48000 Hz All
Digital Mono Mode
Enable ON enables mono in digital audio output. ON, OFF All
Digital DCLK Falling Edge ON uses falling edge of DCLK for sampling. ON, OFF All
Seek/Tune Properties All
Max Time Error (kHz) If a station is offset from the set frequency by this
amount or more, the AFC rail bit is set. 1–15 kHz All
Table 23. Weather Band Receiver Settings Property Window (Continued)
Item Description Range Applicable
Devices
Si47xx-EVB
94 Rev. 0.8
7.4. Weather Band Receiver RSSI/SNR Graph Window
The RSSI/SNR Graph Window allows the user to plot RSSI and SNR across the weather band. Bitmap dat a can be
saved to file by selecting FileSave as Bitma p and tabulated da ta can be saved to file by se lec tin g File Save to
.csv.
Figure 74. Weather Band Receiver RSSI/SNR Graph Window
Table 24. Weather Band Receiver RSSI/SNR Graph Window Descriptions
# Items Description
1 RSSI/SNR Graph Select between drawing the RSSI, SNR graph, or both.
2 Line/Bar Select between drawing in bar mode or in continuous line mode.
3Draw
Click this to start plotting the graph.
4 Clear Click this button to clear the entire graph.
1
2
3
4
Si47xx-EVB
Rev. 0.8 95
7.5. Weather Band Receiver Register Map Window
The register map window allows the user to manually program the device by sending commands to the device.
Refer to "AN332: Si47xx Programming Guide " to manually program the device.
Figure 75. Weather Band Receiver Register Map Window
Si47xx-EVB
96 Rev. 0.8
7.6. Weather Band Receiver SAME Event Data (Si4707 only)
The SAME Event Data window allows the user to view the SAME message description, originator ID, originator
type, purge time, origination time, region along with the raw data and event confidence.
The Event to be displayed can b e selected throug h the "Event" drop down box. The message buf fer can be cleared
by clicking on the "Clear Messages" button.
The confidence metric for each byte is listed as a number from 0 to 3 with 3 representing the highest confidence
level. The "Incoming Message " indicator is lit for a new incoming message.
Raw data, confidence metrics, time stamp and status flags may be logged to file by selecting ToolsLog Raw
SAME Data.
Figure 76. Weather Band Receiver SAME Event Data
Si47xx-EVB
Rev. 0.8 97
8. AM Receiver GUI
8.1. AM Receiver Initialization
The first Si474x window is the Initialization window as shown in Figure 77. On the function drop-down menu, select
the function of the Si474x as an AM Receiver. Select the device, busmode, firmware revision, and initial part
settings and then click Initialize. A new window displaying "Initializing AM Receiver" will appear. Crystal operation
is not supported on Si474x-EVB (that supports Si4740/41/42/43/44/45). You can also select Analog Output or
Digital Output through SPDIF and CO DEC with the E VB Audio Sett ings drop down box. The AM r eceiver m ode is
used for LW reception as well.
Figure 77. AM Receiver Initialization
Si47xx-EVB
98 Rev. 0.8
8.2. AM Receiver Main Window
The AM receiver main window will appear after initialization.
Figure 78. AM Receiver Window
Table 25. AM Receiver Window Descriptions
# Name Description
1 Tune/Seek Tune Down (<), Tune Up (>) buttons execute a single channel step according to the channel
spacing setting. Th e channel spacing setting can be set in the property window.
Seek down (<<), Seek Up (>>) buttons execute a seek up or down to the next received FM
signal meeting or exceeding the seek settings within the selected band. The seek setting RSSI
and SNR threshold can be set in the property windo w.
2 Frequency
Slider
Bar, AFC,
Valid
The Frequency Display indicates the frequency in kHz. To change the Frequency, drag the
pointer in the Frequency Slider Bar to the desired frequency.
AFC Rail indicator will be red if the tuned frequency is in an AFC rail state, otherwise the
indicator will be grey.
The Valid indicator will be green if the AM frequency meets the RSSI and SNR seek settings.
3 Volume,
Mute Select the Si473x output volume (0–63) by moving the slider bar pointer. Press the Mute button
to mute the radio. If the radio is muted the button will be red. Press the Mute button again to
remove the muting.
4 Auto Scan The Auto Scan button will find all the stations with an RSSI and SNR above the seek settings in
the property window. After the scan is completed, the number of stations found will be displayed
and each station will be available in the drop down box. Also, a red indicator mark will be dis-
played on the Frequency Slider Bar (2) for each station. The "To Presets" Button will program the
preset buttons (5) with the 12 strongest stations.
5 Presets Press the desired button to tune to the frequency displayed on the button. To store a new value
to the preset button, tune to the desired frequency and then press and hold the desired button
for 1.5 seconds. The button will then change to indicate the stored frequency. This information is
stored to a file and used the next time the program is run.
Si47xx-EVB
Rev. 0.8 99
6 Status The RSSI indicator displa ys the RSSI of the signal in dBuV. The SNR indicator displays the SNR
of the received signal in dB. The varactor value sp ecifies the cap acitance of the tuning front-end.
A value of 6143 me ans th at the maximum capacitance is being pre sented at the AM in pu t and a
value of 1 means that the varactor is a t its mini mum value. The AGC Index indicator displ ays the
AGC status. The Soft Mute indicator displays the estimated attenuation applied to the signal
based on RSSI and SNR values.
7 Function,
Band
Selection
The Function buttons are used to boot up the device in different mode.
Using the Band Selection drop down box, you can select different AM, LW, or SW bands. The
drop down box will only appear with LW or SW enabled device. If an SW band is selected using
the SW/WB Antenna Card, set the varactor to 1 for best performance. LW not support with SW/
WB Antenna Card.
Table 25. AM Receiver Window Descriptions (Continued)
# Name Description
Si47xx-EVB
100 Rev. 0.8
8.3. AM Receiver Property Settings Window
AM receiver settings can be configured through the properties window by selecting WindowProperties.
Properties are grouped into categories which can be selected from the drop-down box in the upper right of the
window. For convenience, all AM receiver properties are also located in WindowPropertiesAM: All.
Figure 79. AM Receiver Settings Property Window
Si47xx-EVB
Rev. 0.8 101
Figure 80. AM Receiver Settings Property Window for Si474x
Si47xx-EVB
102 Rev. 0.8
Table 26. AM Receiver Property Window Descriptions
Name Description Range Applicable
Devices
AGC Attack Rate Sets the AGC attack rate. Larger values provide
slower attack and smaller values provide faster
attack.
4–248 Si4740/41/42/43/
44/45
AGC Frontend
Attn. Backup
Steps
Sets gain index backup (ATTN_BACKUP) for exter-
nal attenuator. For Si4743EVB, 12 and 20 are recom-
mended for "Passive" and "Active" external
attenuators, respectively.
0–28
(AM Component
2.E.5)
Si4740/41/42/43/
44/45
AGC Frontend
Min. Gain Index Sets minimum gain index. For Si4743EVB, 19 is rec-
ommended. 0–28
(AM Component
2.E.5)
Si4740/41/42/43/
44/45
AGC Index Sets gain index when "AGC Override" is On. 0–
37+ATTN_BACKU
P
All
AGC Override When "Off", AGC is enabled. When "On", AGC is dis-
abled and gain index is forced to "AGC Index" ON/OFF All
AGC Release
Rate Sets the AGC release rate. Larger values provide
slower release and smaller values pr ovide faster
release.
4–248 Si4740/41/42/43/
44/45
External
Attenuator Select For Si474x-EVB daughtercard versions > 1.2. When
using an antenna, set this property to PASSIVE. If
you are connecting a signal generator directly, set
this to ACTIVE.
ACTIVE, PASSIVE Si4740/41/42/43/
44/45
Auto Volume
Cont. Max Gain
(dB)
Sets the maximum gain allowed for automatic volume
control. 6.02–90.3 dB Si473x-C40 and
later, Si474x
De-Emphasis De-emphasis filter setting allows the user to select
whether to turn on/off the de-emphasis filter. ON/OFF All
Power Line Noise
Filter ON enables high pass filte r to filter out the 50/60 Hz
tone. ON/OFF Si473x-C40 and
later, Si4740/41/42/
43/44/45
Reference Clock
Frequency (Hz) This field is used to specify the freq uency of the refer-
ence clock. The Reference clock frequency divided
by the pre-scalar must be in the range of 31.130 to
34.406 kHz.
31130–34406 Hz All
Reference Clock
Prescaler Reference Clock Pre-scalar divides down RCLK fre-
quency by the value specified in this field. The Refer-
ence clock frequency divided by the pre-scalar must
be in the range of 31.130 to 34.406 kHz.
1–4095 All
Digital DCLK
Falling Edge ON uses falling edge of DCLK for sampling. ON, OFF Si4705/06,
Si4731/35/37/39,
Si4730/34/36/38-
D60 and later,
Si4741/43/45,
Si4784/85
Si47xx-EVB
Rev. 0.8 103
Digital Format Format of digital audio output. I2S, Left-Justified,
DSP Si4705/06,
Si4731/35/37/39,
Si4730/34/36/38-
D60 and later,
Si4741/43/45,
Si4784/85
Digital Mono
Mode Enable ON enables mono in digital audio output. ON, OFF Si4705/06,
Si4731/35/37/39,
Si4730/34/36/38-
D60 and later,
Si4741/43/45,
Si4784/85
Digital Sample
Precision Digital audio output bit precision. 8-bit, 16-bit, 20-bit,
24-bit Si4705/06,
Si4731/35/37/39,
Si4730/34/36/38-
D60 and later,
Si4741/43/45,
Si4784/85
Digital Sample
Rate Hz DFS sample rate for digital input signal. Recom-
mended values are: 32 kHz, 44.1 kHz, or 48 kHz.
Over-sampling rate must be set in order to satisfy a
minimum DCLK of 1 MHz. Sample rate must be set to
0 before DCLK/DFS is removed.
0, 32000–48000 Hz Si4705/06,
Si4731/35/37/39,
Si4730/34/36/38-
D60 and later,
Si4741/43/45,
Si4784/85
Noise Blanker
Delay Delay in microseconds before applying noise blank-
ing to the original samples. 125–205 µs Si4742/43/44/45
Noise Blanker
Detect Threshold Sets the thre shold for detecting impulse s in dB above
the noise floor. If set to 0, impulse noise blanking is
disabled.
0 – 90 dB Si4742/43/44/45
Noise Blanker IIR
Filter Sets the cut-of f frequency for the low pass filter that is
used for noise floor estimation in noise blanker detec-
tion.
300–1600 Si4742/43/44/45
Noise Blanker
Interval Interval original samples are replaced by interpolated
clean samples. 8 – 48 µs Si4742/43/44/45
Noise Blanker
Rate Maximum noise blanking rate. 100 – 6400 Hz Si4742/43/44/45
Band Bottom
Limit (kHz) The lower frequency limit for the seek function. This
is set automatically by the GUI based on spacing
selection.
10 kHz Spacing:
520 kHz
9 kHz Spacing:
510 kHz
All
Band Top Limit
(kHz) The upper frequ en cy limit for th e see k fu nction. 1710 kHz All
Channel Filter Channel Filter allows the user to select the bandwid th
of the bandpass channel filter. 1, 1.8, 2, 3, 4,
6kHz All
Table 26. AM Receiver Property Window Descriptions (Continued)
Name Description Range Applicable
Devices
Si47xx-EVB
104 Rev. 0.8
Seek Mode Seek mode specifies the behavior of seek when it
reaches either en d of the AM band. T he default va lue
makes the seek wrap around and sta rt at the other
end of the AM band. The other option makes seek
stop if it reaches either end of the AM band without
finding an AM station.
Stop at Lim it or
Wrap at Limit All
Seek RSSI
Threshold
(dBµV)
Seek RSSI threshold is a metric that is used when
using the seek feature. Any signal with an RSSI lower
than the threshold will be ignored during a seek.
0–63 dBµV All
Seek SNR
Threshold (dB) Seek SNR thresh old is a metric that is used when
using the seek featur e. Any signal with an SNR lo wer
than the threshold will be ignored during a seek.
0–63 dB All
Spacing Allows specification of the step spacing when tuning
with the GUI. 9 or 10 kHz All
Varactor
Capacitor
Overwrite
Varactor capacitance overwrite allows the specifica-
tion of the capacit ance presented to the AMI pin from
the tunable capacitor inside the part. A value of 0
automatically selects the value.
Automatic: 0
Manual: 1–6143 All except Si4710-
A10
Soft Mute Att ack
Rate (dB/s) Sets the attack rate for entering soft mute. 1–31999 dB/s Si4740/41/42/43/
44/45
Soft Mute
Attenuation
Slope
(dB/dB)
Soft mute attenuation slope specifies the slop e of the
attenuation curve when the signal SNR is below the
soft mute SNR threshold. It is specified as dB/dB
where the attenuation applied is simply the value
specified here times the amount the signal SNR is
below the threshold.
1–5 All
Soft Mute Max
Attenuation (dB) Soft mute attenuation is the amount of attenuation
that takes place when the signal falls below the sof t
mute threshold.
0–63 dB
0 = disable All
Soft Mute
Release Rate
(dB/s)
Sets the release rate for leaving soft mute. 1–31999 dB/s Si4740/41/42/43/
44/45
Soft Mute SNR
Threshold (dB) Sof t mute SNR threshold is the level below which soft
mute is activated. 0–63 dB All
Table 26. AM Receiver Property Window Descriptions (Continued)
Name Description Range Applicable
Devices
Si47xx-EVB
Rev. 0.8 105
8.4. AM Receiver RSSI/SNR Graph Window
The RSSI/SNR graph window allows the user to plot RSSI and SNR across the AM band. Bitmap data can be
saved to file by selecting FileSave as Bitma p and tabulated da ta can be saved to file by se lec tin g File Save to
.csv.
Figure 81. AM Receiver RSSI/SNR Graph Window
Table 27. FM Receive RSSI/SNR Graph Window Descriptions
# Items Description
1 RSSI / SNR Graph Select between drawing the RSSI or SNR graph.
2Line / Bar
Select between drawing in bar mode (depicted as green) or in co ntinuous
line mode (depicted as yellow).
3Draw
Click this to start plotting the graph
4 Seek Threshold
(RSSI / SNR) Draw the RSSI and/or SNR seek threshold as specified in the respective
properties. Th e RSSI se ek th re shold is shown in red; the SNR seek thresh -
old is shown in orange.
5 Mark Valid Stations Mark Valid Stations based on the RSSI/SNR seek threshold settings.
6 Clear Click this button to clear the traces selected in the Delete Plots combo box.
1
2
3
4
5
6
Si47xx-EVB
106 Rev. 0.8
8.5. AM Receiver Register Map Window
The register map window allows the user to manually program the device by sending commands to the device.
Refer to "AN332: Si47xx Programming Guide " to manually program the device.
Figure 82. AM Receiver Register Map Window
Si47xx-EVB
Rev. 0.8 107
8.6. AM Receiver Logging Tools Info
8.6.1. Log Band Scan
Selecting ToolsLog Band Scan allows you to specify a filename and begin a scan of the entire band. The scan
feature starts with the first frequency in the band and then seeks to the first station that meets the seek criteria
(Seek RSSI Threshold, Seek SNR Threshold). When a valid station is found, the software waits at the station and
logs Frequency, AFC, RSSI, SNR, Soft Mute etc settings and then seeks to the next valid station. While scanning,
the software displays a green "Scanning" notice below the menu bar. The scan can be aborted by selecting the
ToolsLog Band Scan a second time. When the scan completes, the filena me given is saved in comma sepa rated
format and is available for analysis in a text editor or spreadsheet.
8.6.2. Log Device Commands
Selecting ToolsLog Device Commands prompts for a filename in which all software API calls and data with
timestamp data will be logged as text. The logging will continue until ToolsLog Device Commands is selected a
second time, at which point the file is saved and available for analysis in a text editor.
8.6.3. Log Channel Info
Selecting ToolsLog Channel Info prompts for a filename in which all register values will be logged in comma
separated format. The software then logs all register values and the time at which it was rec eived. The logging will
continue until ToolsLog Channel Info is selected a second time, at which point the file is saved and available for
analysis in a text editor or spreadsheet.
Si47xx-EVB
108 Rev. 0.8
8.7. AM Receiver Configuration Helper
Selecting WindowConfiguration Helper opens up the Configuration Helper window. The Configuration Helper is
a very useful tool to configure the thresholds and the rates associated with Soft-Mute.
Figure 83. AM Configuration Helper Window
In the example shown in Figure 83, the audio signal does not get attenu ated because the SNR reported by the chi p
is greater than the programmed SNR threshold for Soft Mute.
Si47xx-EVB
Rev. 0.8 109
9. Using the EVB with a 9 V Battery
The EVB can be used with a 9 V battery that allows the user to disconnect the board from the computer for
evaluating the Si47xx. Follow the guidelines listed below to use your EVB with a 9 V battery.
1. Put the switch SW1 in the Ext/Battery position .
2. Connect a 9 V battery to jumper J77.
3. Connect the USB cable.
4. Launch the GUI.
5. Initialize the EVB for AM or FM recep tio n.
6. Once the desired station is tuned an d all th e set tin gs for the receiver are accord in g to th e us er 's liking,
please exit the GUI.
7. When asked whether to leave the device on, please click on yes.
8. Remove the USB cable.
9. The EVB can now be moved around.
Note that once the EVB is using its 9 V battery, it is not possible to change the tuned station. Repeat steps 3–9 to
tune the EVB to a different station while running on the 9 V battery.
Si47xx-EVB
110 Rev. 0.8
10. Debugging Guidelines for Si47xx EVB
Table 28. Debugging Guidelines for Si47xx EVB
Mode Symptom Solution
Configuration EVB not recognized If the EVB is not recognized by the PC, remove the USB
connection and re connect. Ensure the EVB is recognized by the
PC by right-clicking on My Computer and selecting
PropertiesHardwareDevice Manager. Under Human Interface
Devices, select each HID-Compliant Device“Details entry and
confirm one contains VID_10C4&PID_8244.
IF the EVB is not recognized by the GUI, but is recognized by the
PC, it is likely that another process has erroneou sly acquired the
handle to the EVB. Two processes known to cause this issue are
lxhidsve.exe and EAUSBKBD.exe. Terminate these processes in
the Task Manager.
If EVB is not recognized by the GUI, uninstall .NET framework 2.0
and reinstall from the installation CD or Microsoft’s website. The
GUI requires .NET Fr am e wo rk 2. 0; however, multiple versions
such as 1.1, 2.0, and 3.0 may be installed simultaneously.
Initialization GUI crashes The GUI may crash if a previous GUI .ini file was not removed
properly. Close the GUI, and delete all .ini files from the GUI
directory. Launch the GUI and try again.
If the GUI continues to crash, close the GUI, remove the GUI from
Control PanelAdd or Remove Programs, and then delete the GUI
directory. Launch the GUI and try again.
Receive Audio clicking noise Disable "Update" under the "Control" menu (disables continuous
GUI/Si47xx updates) .
Receive Excess interference/
Poor Reception If using a laptop, ensure it is ru nning off the ba ttery and not plugged
in to the ac mains.
Alternatively, disconnect from the host PC and run from battery
power.
Move to a stronger signal environment.
Receive Seek/scan doesn’t find
expected channels Adjust Seek SNR and Seek RSSI thresholds down wards.
Verify band and channel spacing for the re gion.
Receive Seek/scan stops on
noise Adjust Seek SNR and Seek RSSI thresholds upwards.
If using a laptop, en sure it is running of f the battery and not plugg ed
in to the ac mains.
FM/WB
Receive Poor sensitivity from
FM test port Remov e ac co up ling cap fro m the he adpho ne input path to
eliminate possible sources of interference.
Si47xx-EVB
Rev. 0.8 111
AM Receive Excess interference/
Poor reception 1. Check the antenna board connection on J2.
2. Make sure the ferrite bar is not loose and does not slide in the coil.
3. If using a laptop, ensure it is running off the battery and not plugged in.
4. Alternatively, disconnect from the host PC and run from battery power.
5. Move to a stronger signal environment. Make sure you are close to a window or
outside in the open when evaluating AM reception. Large metal structures, like
buildings, interfere with AM reception so it is best to be away from these sources
of interference.
FM Transmit Audio distorte d/Limiter
engaging excessively Confirm that audio input levels match the Line Input Attenuation
and Maximum Line Input Levels.
Disable or scale back the gain of the audio dynamic range control.
FM Transmit Poor transmit audio
quality Increase the RF level.
Increase the audio deviation level.
Change the RF frequency to a channel with less interference.
The RPS feature can be used to find candidate frequencies.
Table 28. Debugging Guidelines for Si47xx EVB
Mode Symptom Solution
Si47xx-EVB
112 Rev. 0.8
11. Bill of Materials
Table 29. Si47xx-EVB Baseboard Rev 1.6 Bill of Materials
Item Qty RefDes Description Value Mfg/Vendor Mfg/Vendor_PN
1 1 J78 2.1 mm power plug CUI CONN_PJ-01
227 C1,C2,C4,C11,C13,C28,
C31,C33,C34,C35,C36,
C39,C40,C42,C43,C46,
C50,C52,C54,C55,C57,
C61,C62,C68,C71,C73,C74
CAP,SM,0402,0.1UF,10% 0.1UF VENKEL C0402X7R160-104KNE
3 1 C 7 2 RADIAL CAP 4.7UF Kemet T350B475K016AS
4 1 C 7 0 CAP,SM,0805 0.1UF
5 1 C 6 0 CAP,SM,7343,15UF,10% 15UF VISHAY 293D156X9020D2T
6 6 C18,C21,C22,C38,C69,
C 7 7 CAP,SM,0603,1UF,X7R 1UF VENKEL C0603X7R100-105KNE
7 2 C20,C41 CAP,SM,0402 24pf MURATA GRM1555C1H240JZ01D
8 5 C23,C26,C27,C30,C53 CAP,SM,0402,.01UF,10%,25V 0.01uF Kemet C0402C103K3RACTU
9 1 C 5 9 CAP,SM,0402,22PF,10% 22Pf PANASONIC-ECG ECJ-0EC1H220J
10 8C32,C37,C45,C47,C48,
C49,C51,C65
CAP,SM,3216,16V 10UF VISHAY 293D106X9016A2
11 12 CAP,SM,0805 10UF MURATA GRM21BR71A106KE51L
12 3C25,C3, C75 CAP,SM,0402,220PF,5% 220PF PANASONIC - ECG ECJ-0EC1H221J
13 1C 5 8 CAP,SM,3216,10V,10%,6.8UF 6.8UF EPCOS INC B45196H2685K109
14 1C 5 6 CAP,SM,0805,25V,10%,4.7UF 4.7UF MURATA GRM21BR61E475KA12L
15 2C12,C76 CAP,SM,0402,820PF,5% 820pF MURATA GRM1555C1E821JA01
16 1D1 LED,T-1 3/4.RED DIFFUSED LITEON LTL-10223W
17 2FB1,FB2 FERRITE BEAD,SM STEWARD MI0805K400R-00
18 2C100, C101 RES,SM,0805 0ohm VENKEL CR0805-16W-000T
19 3J2,J17,J21 Solder jumpers
20 1J77 CONN,TH,1X2,HDR SAMTEC TSW-102-07-G-S
21 5J5,J13,J41,J61,J65 CONN,TH,1X3,HDR SAMTEC TSW-103-07-G-S
22 1J62 CONN,TH,2X10,HDR SAMTEC TSW-110-07-G-D
23 1J76 PCB TERMINAL BLOCK, 4
POSITION MOUSER
ELECTRONICS 651-1803293
24 2J27,J75 CONN,TH,TFM,HDR,2X20,0.05
X0.05IN PITCH SAMTEC TFM-120-02-S-D-A
25 2J24,J54 SMA_VERTICAL Digikey ARFX1231-ND
26 2J32,J51 CONN,TH,1X8,HDR SAMTEC TSW-108-07-G-S
27 2J68, J69 CONN,TH,1X3,HDR \
CONN,TH,1X1,HDR SAMTEC TSW-103-07-G-S \ TSW-
101-07-G-S
28 2J6,J7 CONN,RCA,RIGHT ANGLE CUI RCJ-2123
29 1J30 MINIJACK,3.3V,8MBPS SHARP GP1FD310TP
30 1J19 MINIJACK,RCVR,3.3V,8MBPS SHARP GP1FD210RP
31 1J74 HEADER,SHROUDED,5X2 3M 2510-6002UB
32 1J79 CONN,TH,USB,RCPT,TYPE B 67068-0000 MOLEX/WALDOM
ELECTRO
33 1PB1 BUTTON,SM,LIGHT-
TOUCH,160GF,6X3.5MM PANASONIC - ECG EVQ-PPBA25
Note: SPDIF will not be supported on new EVBs as of February 14, 2011. On those boards items 29, 30, and 68—silkscreened as
J30, J19 and U9—will not be populated.
Si47xx-EVB
Rev. 0.8 113
34 28 R8,R9,R20,R48,R49,R50,
R51,R52,R53,R54,R55,
R56,R57,R58,R59,R60,
R62,R63,R68,R69,R71,
R72,R75,R77,R79,R81,
R82,R91
RES,SM,0402 0R VENKEL CR0402-16W-000T
35 1R 8 0 RES,SM,0402 22.1 VENKEL CR0402-16W-22R1FT
36 5R5,R7,R10,R11,R29 RES,SM,0402 10K KOA SPEER RK73H1ELTP1002F
37 2R12,R13 RES,SM,0402 5.6K KOA SPEER RK73H1ELTP5601F
38 1R 4 3 RES,SM,0402 33 VENKEL CR0402-16W-330GT
39 4R17,R27,R36,R19 RES,SM,0402 47K YAGEO
CORPORATION RC0402FR-0747KL
40 1R 3 1 RES,SM,0402,300,1%,1/16W 301 YAGEO
CORPORATION 9C04021A3010FLHF3
41 1R 3 8 RES,SM,0402,100,1%,1/16W 100 YAGEO
CORPORATION RC0402FR-07100RL
42 8R1,R2,R4,R6,R15,R16,
R18,R23 RES,SM,0402,160K,5% 160K VENKEL CR0402-16W-164JT
43 2R26,R90 RES,SM,0402,7.32K,1% 7.32K VENKEL CR0402-16W-7321FT
44 2R34,R89 RES,SM,0402,12.7K,1% 12.7K VENKEL CR0402-16W-1272FT
45 2R22,R14 RES,SM,0402,7.68K,1% 7.68K VENKEL CR0402-16W-7681FT
46 1R 8 5 RES,SM,0402 1K VENKEL CR0402-16W-102J
47 4R61,R70,R76,R83 RES,SM,0402 2K VENKEL CR0402-16W-202J
48 1R 4 7 RES,SM,0805 470 VENKEL CR0805-8W-471J
49 1R 4 6 RES,SM,0402,1% 51.1K ROHM MCR01MZPF5112
50 1R 4 5 RES,SM,0402,1% 140K PANASONIC-ECG ERJ-2RKF1403X
51 1R 4 4 RES,SM,0402 330K ROHM MCR01MZPJ334
52 2R21,R28 RES,SM,0402 124K ROHM MCR01MZPF1243
53 2R25,R33 RES,SM,0402 39.2K ROHM MCR01MZPF3922
54 1R 8 4 RES,SM,0603 1K VENKEL CR0603-10W-1001FT
55 1R 8 6 VARISTOR,SM,O603 LITTLEFUSE INC V5.5MLA0603H
56 2R87,R88 VARISTOR,SM,O402 LITTLEFUSE INC V0402MHS03
57 1R 2 4 RES,SM,0402,680,1%,1/16W 681 ROHM MCR01MZPF6810
58 1SW1 SWITCH_3PIN e-switch eg2472
59 7U1,U3,U8,U11,U13,U18,
U 2 1 SPDT_SWITCH,SC70-6 FAIRCHILD NC7SB3157P6X
60 1U 1 7 VOLTAGE_REG,3_3
V,500MA,SOT223 NATIONAL
SEMICONDUCT LM2937IMP-3.3
61 1U 1 4 OCTAL_BUFFER,TSSOP-20 ST 74LCX541TTR
62 2U7,U12, IC,SINGLE_SCHMITT_TRIG-
GER_BUFFER TEXAS_INSTRU-
MENTS SN74LVC1G17DBVR
63 3U2,U4,U5 I C,S M,OPAMP,SOT 23- 8 MAXIM MAX4233AUB
64 1U 1 6 VOLTAGE_REG,ADJV V,200MA NATIONAL
SEMICONDUCT LP2986-5.0
65 1U 1 0 IC,SM,WM8731,WOLFSON,QF
N-28 WOLFSON WM8731
66 1U 6 IC,SM,UHS DUAL SPST,8 LEAD
US8 FAIRCHILD SEMI-
CONDUC FSA266K8X
67 1U 2 2 IC,SM,C8051F342,MCU,LQFP-
32,9X9MM SILICON
LABORATORIES C8051F342GQ
Table 29. Si47xx-EVB Baseboard Rev 1.6 Bill of Materials (Continued)
Item Qty RefDes Description Value Mfg/Vendor Mfg/Vendor_PN
Note: SPDIF will not be supported on new EVBs as of February 14, 2011. On those boards items 29, 30, and 68—silkscreened as
J30, J19 and U9—will not be populated.
Si47xx-EVB
114 Rev. 0.8
68 1U 9 IC,SM,CS8427-
DS,SPDIF_TRANSLATOR,
28-TSSO
CIRRUS CS8427-CZ
69 1X1 32_768 kHZ,OSCILLATOR,SM ECS_INC ECS-327SMO
70 1X2 XTAL,12.288MHZ,18PF CITIZEN AMER-
ICA CORP CS10-12.288MABJ-UT
71 12 R30,R32,R35,R37,R39,
R40,R41,R42,R92,R93,
R94,R95
Res,sm,0402 49.9 Venkel CR0402-16W-49R9FT
72 1J76 4P Plug 180Deg terminal block MOUSER
ELECTRONICS 651-1803594
73 2U23, U26 Diode,SM,SD103AW,Shottkey
diode Diodes SD103AW-7
74 2Screw Pan 440x3/4 MOUSER
ELECTRONICS 561-P440.75
75 2Spacer nyln rnd 4x.25 MOUSER
ELECTRONICS 561-K4.25
76 3Screw Pan 440x3/8 MOUSER
ELECTRONICS 561-P440.375
77 51/4 Tapped spacer MOUSER
ELECTRONICS 561-TSP3
78 2Steel nut, Size 2-56 Width 0.187' Newark 18M5986
79 2Steel Screw Head Diameter
0.162', Length 0.25', Size 2-56 Newark 18M6002
80 4Nylon Washer, Diameter 0.187',
Size #2 Newark 94F9852
81 1Battery Holder 9 V MOUSER
ELECTRONICS 1BH080
82 1"I" 6" 26AWG W/SKT 9 V Snap MOUSER
ELECTRONICS 121-0626/M-GR
Table 29. Si47xx-EVB Baseboard Rev 1.6 Bill of Materials (Continued)
Item Qty RefDes Description Value Mfg/Vendor Mfg/Vendor_PN
Note: SPDIF will not be supported on new EVBs as of February 14, 2011. On those boards items 29, 30, and 68—silkscreened as
J30, J19 and U9—will not be populated.
Si47xx-EVB
Rev. 0.8 115
Table 30. Si472x-EVB Rev 1.4 Bill of Materials
Item Qty RefDes Description Value MFG/Vendor Mfg/Vendor_PN
1 2 C4,C6 CAP,SM,0402,X7R 22PF MURATA GRM185R71E220KA61D
2 1 C2 CAP,SM,0402,X7R 22NF MURATA GRM185R71E223KA61D
3 2 C7,C10 CAP,SM,0402,X7R 0.1UF MURATA GRM185R71C104KA88D
4 2 C3,C5 CAP,SM,0603,X7R 0.47UF VENKEL C0603X7R160-474KNE
5 2 C1,C9 CAP,SM,0603,X7R 1NF MURATA GRM185R71E102KA61D
6 3 C11,C12,C13 CAP,SM,0402,X7R 100pF MURATA GRM1555C1H101JZ01D
7 2 C14,C15 CAP,SM,0603,X7R 0.33UF VENKEL C0603X7R160-334KNE
8 1 C8 RES,SM,0603 2pF AVX 06035J2R0ABTTR
9 2 J1,J28 SMA,EDGE-MOUNT,GOLD
PLATED YAZAKI RA2EJ2-6G
10 1 J25 CONN, SM, 2X20, SFM SAMTEC SFM-120-02-S-D-A
11 3 J4,J5,J6 CONN, THRU--HOLE, MCX
JACK, .100 LAYOUT NP DIGI-KEY J611-ND
12 1 J11 HEADER, 3X12 NP SAMTEC TSW-112-07-G-T
13 16 J3,J9,J10,J12,J13,
J14,J15,J16,J17,
J18,J19,J20,J21,
J22,J23,J24
SOLDER BUMP JUMPER,
RES, SM, 0402
14 2 J7,J8 CONN, TH, 1X3, HDR NP SAMTEC TSW-103-07-G-S
15 1 J2 CONN, TH, 1X2, HDR NP SAMTEC TSW-102-07-G-S
16 1 J29 CONN,AUDIO
JACK,3.5MM,STEREO DIGIKEY CP-3543N-ND
17 3 F1,F2,F3 Ferrite Bead,SM,0603 2500 ohm MURATA BLM18BD252SN1D
18 1 L2 IN, SM, 0603 120nH MURATA lqw18anr12j00d
19 1 L5 IN, SM, 0603 270NH MURATA LQW18ANR27J00D
20 1 L1 IN, SM, 0603 0R VENKEL CR0603-16W-000T
21 1 L3 IN, SM, 0603 220nh MURATA LQW18ANR22J00D
22 1 R2 RES, SM, 0603 0R VENKEL CR0603-16W-000T
23 1 R4 RES, SM, 0603 49.9R VENKEL CR0603-16W-49r9T
24 1 R10 RES, SM, 0402 10k VENKEL CR0402-16W-103JT
25 1 R1 RES, SM, 0603 10K VENKEL CR0603-16W-103JT
26 4 R3,R7,R8,R9 RES, SM, 0402 20K VENKEL CR0402-16W -203JB
27 1 R5 RES, SM, 0402 0 VENKEL CR0402-16W-000T
28 4 R6,R11,R12,R13 RES, SM, 0402 604 VENKEL CR0402-16W-604R0JB
29 1 U1 IC, SM, SI4720,MLP20 3X3 SILAB SI4720
30 1 U2 IC,SM,HEADPHONE AMP NATIONAL
SEMICONDUCTOR LM4910MA
31 1 U4 IC,SM,ESD PROTECTION
DIODE,SOT23-3 CALIFORNIA MI CRO
DEVICES CM1213-01ST
32 1 X1 XTAL, SM, 32.768 Epson FC-135
33 1 A1 4710 RF Daughter Card PCB
Si47xx-EVB
116 Rev. 0.8
Si471x-EVB Rev 1.4 Population Options
1 C10 CAP,SM,0402,X7R NP
2 C1,C9 CAP,SM,0603,X7R NP
3 C11,C12,C13 CAP,SM,0402,X7R NP
2 C14,C15 CAP,SM,0603,X7R NP
1 J28 SMA,EDGE-MOUNT,GOLD
PLATED NP
1 J29 CONN,AUDIO
JACK,3.5MM,STEREO NP
3 F1,F2,F3 Ferrite Bead,SM,0603 NP
1 L5 IN, SM, 0603 NP
1 L1 IN, SM, 0603 NP
1 L3 RES, SM, 0603 NP
1 R10 RES, SM, 0402 NP VENKEL CR0402-16W-103JT
4 R3,R7,R8,R9 RES,SM,0603 NP VENKEL CR0603-16W-203JB
1 U2 IC,SM,HEADPHONE AMP NP NATIONAL
SEMICONDUCTOR LM4910MA
1 U4 IC,SM,ESD PROTECTION
DIODE,SOT23-3 NP CALIFOR NIA MICRO
DEVICES CM1213-01ST
Si4705-06-EVB Rev 1.4 Population Options
2 C3,C5 RES, SM, 0603 0R VENKEL CR0603-16W-000T
1 C8 RES, SM, 0603 0R VENKEL CR0603-16W-000T
1 R4 RES, SM, 0603 NP VENKEL CR0603-16W-000T
2 R12,R13 RES, SM, 0402 0R VENKEL CR0402-16W-000JB
Table 30. Si472x-EVB Rev 1.4 Bill of Materials (Continued)
Item Qty RefDes Description Value MFG/Vendor Mfg/Vendor_PN
Si47xx-EVB
Rev. 0.8 117
Table 31. Si4731-35-EVB Rev 1.4 Bill of Materials
Item Qty RefDes Description Value MFG/Vendor MFG/Vendor_PN
1 2 C1,C7 CAP,SM,0402,X7R 0.1UF MURATA GRM155R71C104KA88D
2 1 C2 CAP,SM,0402,X7R 22NF MURATA GRM155R71E223KA61D
3 3 C9,C10,C11 CAP,SM,0402,X7R 100PF MURATA GRM1555C1H101JZ01D
4 3 C3,C5,C12 CAP,SM,0603,X7R 1NF VENKEL C0603C0G500-103JNE
5 2 C4,C6 CAP,SM,0402,X7R 22PF VENKEL C0402C0G500-220JNE
6 2 C8,C13 CAP,SM,0603,X7R 0.47UF
7 2 C14,C15 CAP,SM,0603,X7R 0.33UF VENKEL C0603X7R160-334KNE
8 3 F1,F2,F3 FERRIET,SM,0603 2500ohm MURATA BLM18BD252SN1D
9 2 J1,J26 SM A,EDGE-MOUNT,G OLD
PLATED YAZAKI RA2EJ2-6G
10 1 J2 TERMINAL BLOCK, 12 POSI-
TION SAMTEC LCW-112-09-S-S-230-RA
11 14 J9,J10,J12,J13,J1
4,J15,J16,J17,J18,
J19,J20,J21,J22,J
23
SOLDER BUMP JUMPER, R ES,
SM, 0402
12 2 J3,J27,J28 SOLDER BUMP JUMPER, RES,
SM, 0402 NP
13 3 J4,J5,J6 CONN, THRU--HOLE, MCX
JACK, .100 LAYOUT NP DIGI-KEY J611-ND
14 2 J7,J8 CONN, TH, 1X3, HDR NP SAMTEC TSW-103-07-G-S
15 1 J11 HEADER, 3X12 NP SAMTEC TSW-112-07-G-T
16 1 J24 CONN,AUDIO
JACK,3.5MM,STEREO DIGIKEY CP-3543N-ND
17 1 J25 CONN,SM,2X20,SFM SAMTEC SFM-120-02-S-D-A
18 2 L1 IND,SM,0603 220nH MURATA LQW18ANR22J00D
19 2 L2 IND,SM,0603 0 VENKEL CR0603-16W-000T
20 1 L4 IND,SM,0603 270nH MURATA LQW18ANR27J00D
21 1 L3 IND,SM,0603 NP MURATA LQW18ANR12J00D
22 4 R1,R2,R3,R4 RES,SM,0402 20K VENKEL CR0603-16W-203JB
23 1 R6 RES,SM,0603 NP
24 1 R7 RES,SM,0402 10K VENKEL CR0402-16W-103JT
25 8 R9,R10,R11,R12,R
13,C17,C18,C19 RES,SM,0402 0R VENKEL CR0402-16W-000T
26 4 R5,R8 RES,SM,0402 NP
27 1 C16 RES,SM,0402 604 VENKEL CR0402-16W-604r0T
28 1 U1 SI4730 SILABS 4730
29 1 U3 IC,SM,HEADPHONE AMP NATIONAL SEMI-
CONDUCTOR LM4910MA
30 2 U4,U5 IC,SM,ESD PRO TE CTI ON
DIODE,SOT23-3 CALIFORNIA MICRO
DEVICES CM1213-01ST
Si47xx-EVB
118 Rev. 0.8
31 2 U2,U6 IC,SM,ESD PRO TE CTI ON
DIODE,SOT23-3 NP CALIFORNIA MICRO
DEVICES CM1213-01ST
32 1 X1 OSC,SM,Crystal 32.768KHz,Chip 32.768KHz Epson FC-135
NP = Not Populated
Si4707-EVB Rev 1.4 Population Options
4 C1,C9,C10,C11 CAP,SM,0402,X7R NP
2 C4,C6 CAP,SM,0402,X7R NP
3 C8,C12,C13 CAP,SM,0603,X7R NP
2 C14,C15 CAP,SM,0603,X7R NP
3 F1,F2,F3 FERRIET,SM,0603 NP
1 J1 SMA,EDGE-MOUNT,GOLD
PLATED NP
1 J24 CONN,AUDIO
JACK,3.5MM,STEREO NP
1 L1 IND,SM,0603 33nh MURATA LQW18AN33RJ00D
1 L2 IND,SM,0603 NP
4 R1,R2,R3,R4 RES,SM,0402 NP
1 R7 RES,SM,0402 NP
1 U3 IC,SM,HEADPHONE AMP NP
1 X1 O SC,SM,Crystal 32.768KHz,Chip NP
Table 31. Si4731-35-EVB Rev 1.4 Bill of Materials
Item Qty RefDes Description Value MFG/Vendor MFG/Vendor_PN
Si47xx-EVB
Rev. 0.8 119
Table 32. Si474x Daughtercard (Rev 1.3) Bill of Materials
Item Qty RefDes Description Value Mfg/Vendor Mfg/Vendor_pn
1 2 C11,C16 CAP,SM,0402,X7R NP*
2 3 C6,C13,C15 CAP,SM,0402,X7R 0.1 µF Venkel C0402X7R160-104JNE
3 2 C1,C19 CAP,SM,0402,X7R 22 nF Venkel C0402X7R250-223JNE
4 1 C3 CAP,SM,0402,C0G 270 pF Venkel C0402C0G500-271JNE
5 1 C2 CAP,SM,0402,C0G 18 pF Venkel C0402C0G500-180JNE
6 3 C5,C8,C9 CAP,SM,0603,X7R 0.47 µF Venkel C0603X7R160-474JNE
7 1 C7 CAP,SM,0402,X7R 1200 pF Venkel C0402X7R250-122JNE
8 1 C10 CAP,SM,0402,COG 3.9 pF Venkel C0402C0G500-3R9-
JNE
9 3 C17,C18,C12 CAP,SM,1206,X5R 100 µF Venkel C1206X7R063-107JNE
10 1 C4 CAP,SM,0603,X7R 0.018 µF Venkel C0402X7R250-183JNE
11 1 C16 CAP,SM,0402,COG 2 pF Venkel C0402C0G500-
2R0CNP
12 1 J4 BNC,EDGE-MOUNT,GOLD
PLATED Mouser 361V509E
13 18 J1,J2,J6,J7,J8,J9,
J10,J12,J13,J15,
J16,J17,J18,J19,
J20,J22,J24,J27
SOLDER BUMP JUMPER, RES,
SM, 0402
14 2 J21,J23 CONN, TH, 1X4, HDR NP*
15 4 J11,J14,J25,J26 CONN, TH, 1X3, HDR NP*
16 1 J5 HEADER, 3X12 NP*
17 1 J28 CONN,SM,2X20,SFM Samtec SFM-120-02-S-D-A
18 1 L1 IND,SM,0603 120 nH Murata LQW18ANR12J00D
19 1 L2 IND,SM,0603 100 nH Murata LQW18ANR10J00D
20 1 L3 IND,SM,1008 220 µH Coilcraft 1008PS-224KLB
21 1 L4 IND,SM,4018 1 mH Coilcraft LPS4018-105ML
22 2 L6,L7 IND,SM,0805 6.8 µH Coilcraft 0805PS-682KB
23 1 L8 IND,TH,7PD 47 mH Toko 388BN-1211Z
24 1 L9 IND,TH,RFB0807 2.7 mH Coilcraft RFB0807-272L
25 1 L10 IND,SM,1008 33 µH Coilcraft 1008PS-333KLB
26 1 R3 RES,SM,0402 10 Venkel CR0402-16W-100JT
27 1 R8 RES,SM,0402 1 Venkel CR0402-16W-1R0JT
28 1 R1 RES,SM,0603 10 MVenkel CR0603-16W-106JT
29 3 C14,R21,R24 RES,SM,0402 0 Venkel CR0402-16W-000T
30 1 R11 RES,SM,0402 10 kVenkel CR0402-16W-103JT
31 1 L5 RES,SM,0603 150 nH Murata LQW18ANR15J00D
32 4 R22,R23 RES,SM,0402 4.02 kVenkel CR0402-16W-4021FT
33 1 R2 RES,SM,0402 24.3 K Venkel CR0402-16W-2432FT
34 1 R13 RES,SM,0402 4.53 K Venkel CR0402-16W-4531FT
Si47xx-EVB
120 Rev. 0.8
35 1 R16 RES,SM,0402 604 Venkel CR0402-16W-6040FT
36 3 R5,R18,R19 RES,SM,0402 4.7 kVenkel CR0402-16W-472JT
37 5 R4,R6,R7,R9,R10 RES,SM,0402 249 Venkel CR0402-16W-2490FT
38 3 R12,R14,R15 RES,SM,0402 NP*
39 2 R17,R20 RES,SM,0402 22 kVenkel CR0402-16W-223JT
40 1 Q6 FET,SM,SOT-23 Fairchild Semi 2N7002
41 2 Q1,Q2 FET,SM,SOT-23 NXP BF862
42 2 Q3,Q4 TRANSISTOR,NPN,,SM,
SOT-23 Fairchild Semi MMBTH10
43 1 Q5 TRANSISTOR,PNP,SM,
SOT-23 Fairchild Semi MMBTH81
44 1 U1 IC,SM,QFN4X4 24P Silicon Labs Si474X
45 2 U2,U4 IC,SM,ESD PROTECTION
DIODE,SOT23-3 California Micro
Devices CM1213-01ST
46 1 U3 IC,SM,QUAD NORGATE,TSOP-
14 TI 74LVC02APW
*Note: NP = Not Populated
Table 32. Si474x Daughtercard (Rev 1.3) Bill of Materials (Continued)
Item Qty RefDes Description Value Mfg/Vendor Mfg/Vendor_pn
Si47xx-EVB
Rev. 0.8 121
Table 33. Si4749 Daughtercard (Rev 1.1) Bill of Materials
Item Qty RefDes Description Value Mfg/Vendor Mfg/Vendor_pn
1 3 C4,C6,C7 CAP,SM,0402,X7R 0.1 µF Venkel C0402X7R160-104JNE
2 1 C2 CAP,SM,0402,X7R 22 nF Venkel C0402X7R250-223JNE
3 2 C4,C6 CAP,SM,0402,C0G 24 pF Venkel C0402C0G500-240JNE
4 1 C1 CAP,SM,0402,C0G 100 pF Venkel C0402C0G500-101JNE
5 1 C8 CAP,SM,0402,X7R NP*
6 2 C3,C5 CAP,SM,0402,COG 0.01 µF Venkel C0402X7R250-103JNE
7 1 J1,J2 SMA,EDGE-MOUNT,GOLD
PLATED Yazaki RA2EJ2-6G
8 14 J9,J10,J12,J13,J14,J
15,J16,J17,J18,J19,J
20,J21,J22,J23
SOLDER BUMP JUMPER,
RES, SM, 0402
9 2 J27,J28 SOLDER BUMP JUMPER,
RES, SM, 0402 NP*
10 3 J4,J5,J6 CONN, THRU--HOLE, MCX
JACK, .100 LAYOUT NP* Digi-Key J611-ND
11 2 J7,J8 CONN, TH, 1X3, HDR NP* SAMTEC TSW-103-07-G-S
12 1 J11 HEADER, 3X12 NP* SAMTEC TSW-112-07-G-T
13 1 J25 CONN,SM,2X20,SFM SAMTEC SFM-120-02-S-D-A
14 1 L1 IND,SM,0603 180 nH Murata LQW18ANR18J00D
15 1 L2 IND,SM,0603 NP
16 1 R1 RES,SM,0603 10 MVenkel CR0603-16W-106T
17 2 R2,R4 RES,SM,0402 64.9 Venkel CR0402-16W-64R9FT
18 6 R3,R7,R9 RES,SM,0402 0 Venkel CR0402-16W-000T
19 2 R6,R10 RES,SM,0402 2 kVenkel CR0402-16W-202T
20 1 R5 RES,SM,0402 604 Venkel CR0402-16W-604R0T
21 1 R9,.R11 RES,SM,0402 10 Venkel CR0402-16W-100JT
22 1 R8 RES,SM,0402 NP*
23 2 Q1,Q2 FET,SM,SOT-23 NXP BF862
24 1 U2 SI4749 Silicon Labs Si4749
25 1 U1 IC,SM,ESD PROTECTION
DIODE,SOT23-3 California Micro
Devices CM1213-01ST
1 A1 PCB,Si4749EVB Silicon Labs
*Note: NP = Not Populated
Si47xx-EVB
122 Rev. 0.8
Table 34. Si4730 Ferrite Medium Antenna Rev 1.2 Bill of Materials
Item Qty RefDes Description Value Mfg/Vendor Mfg/Vendor_PN
1 1 J4 Socket Header, TH, Friction notch SAMTEC SSW-112-02-G-P-RA
2 1 U1 Medium Ferrit e Core Silabs SL4X30MW110T
3 1 A1 PCB, Ferrite Antenna Board
4 1 Zip Tie 6in Hellermann Tyton T30R9C2
NP = Not Populated
Table 35. Si473x Ferrite Large Antenna Rev 1.2 Bill of Materials
Item Qty RefDes Description Value Mfg/Vendor Mfg/Vendor_PN
1 1 J4 Socket Header, TH, Friction notch SAMTEC SSW-112-02-G-P-RA
2 1 U1 Large Ferrite Core Silabs SL5X7X100MW70T
3 1 A1 PCB, Ferrite Antenna Board
4 2 Zip Tie 6in Hellermann Tyton T30R9C2
Table 36. Si473x Airloop Antenna Rev 1.2 Bill of Materials
Item Qty RefDes Description Value Mfg/Vendor Mfg/Vendor_PN
1 1 J1 Compression Connector (Speaker jack) KOBI(Mouser) 151-0300-E
2 1 J2 Socket Header, TH, Friction notch SAMTEC SSW-112-02-G-P-RA
3 1 U1 Transformer, TH, Custom SiLabs SL9X5X4MWTF
4 1 A1 PCB, Air Loop Antenna Board
NP = Not Populated
Si47xx-EVB
Rev. 0.8 123
Table 37. Si473x SW/WB Antenna Bill of Materials
Item Qty RefDes Description Value Mfg/Vendor
1 1 C1 CAP,SM,0402,C0G 18 pF VENKEL
2 1 C2 CAP,SM,0402,C0G 33 pF VENKEL
3 1 J1 Socket Header, TH,
Friction notch SAMTEC
4 1 J2 BNC,EDGE-MOUNT,
GOLD PLATED MOUSER
5 1 J3 Large Ferrite Core Silabs
6 1 L1 IND,SM,0603 470 nH MURATA
7 1 L2 IND,SM,1008 4.7 µH COILCRAFT
8 1 S1 SPDT Sw itch E-switch
9 1 U1 IC,SM,ESD PROTECTION
DIODE, SOT23-3 CALIFORNIA
MICRO DEVICES
10 1 A1 PCB, Short Wave
Antenna Board
11 2 X1, X3 Zip Tie 6in Hellerman Tyton
NP = Not Populated
Population Options
Weather Band Antenna Card C1 and C2 RES, SM, 0402 0 VENKEL
L1 IND, SM, 0603 68 nH MURATA
L2 NP
S1 NP
NP = Not Populated
Table 38. Si474x Antenna Dummy Card Rev 1.0 Bill of Materials
Item Qty RefDes Description Value Mfg/Vendor Mfg/Vendor_PN
1 1 C1 CAP,SM,0603,C0G 15 pF VENKEL C0603C0G500-150JNE
2 1 C2 CAP,SM,0603,C0G 15 pF VENKEL C0603C0G500-620JNE
3 2 J1, J2 SMA,EDGE-MOUNT,
GOLD PLATED 62 pF MURATA RA2EJ2-6G
4 1 R1 RES,SM,0603 49.9 R VENKEL CR0603-16W-490T
NP = Not Populated
Si47xx-EVB
124 Rev. 0.8
12. Schematics
12.1. Si47xx-EVB Baseboard Rev 1.6
Figure 84. Si47xx-EVB Baseboard Rev 1.6 Block Diagram
Si47xx-EVB
Rev. 0.8 125
Figure 85. Si47xx-EVB Baseboard Rev 1.6 Daughtercard Interface
Si47xx-EVB
126 Rev. 0.8
Figure 86. Si47xx-EVB Baseboard Rev 1.6 Signal Multiplexers
Si47xx-EVB
Rev. 0.8 127
Figure 87. Si47xx-EVB Baseboard Rev 1.6 CODEC
Si47xx-EVB
128 Rev. 0.8
Note: For EN55020 compliance, please add the following components to L-OUT and R-OUT @ J6: 1 µF from C5 x C7 to GND
(one for each output), 22.6 in series with C5 x C7 (one for each output).
Figure 88. Si47xx-EVB Baseboard Rev 1.6 Audio Input and SPDIF Translator
Si47xx-EVB
Rev. 0.8 129
Figure 89. Si47xx-EVB Baseboard Rev 1.6 MCU
Si47xx-EVB
130 Rev. 0.8
Figure 90. Si47xx-EVB Baseboard Rev 1.6 Power Supply
Si47xx-EVB
Rev. 0.8 131
12.2. Si471x/2x-EVB Daughtercard Rev 1.4
Figure 91. Si471x/2x-EVB Daughtercard (Rev 1.4)
Si47xx-EVB
132 Rev. 0.8
Figure 92. Si471x/2x-EVB Daughtercard (Rev 1.4) Headphone Schematic
(applies only to Si4704/05/06/2x/8x)
Si471x/2x-EVB Daughtercard (Rev 1.4) ships configured for external RCLK, supplied by the Si47xx-EVB
Baseboard. To configure for crystal oscillator operation:
1. Remove R5.
2. Remove short at J24.
3. Short J26.
4. Short J27.
5. Select "Use XOSCEN" at GUI initialization.
Note: Digital Audio Output is not available when configured for crystal oscillator.
Si47xx-EVB
Rev. 0.8 133
12.3. Si473x-EVB Daughtercard Rev. 1.4
7
Figure 93. Si473x-EVB Daughtercard Rev. 1.4 (1 of 2)
Si47xx-EVB
134 Rev. 0.8
Figure 94. Si473x-EVB Daughtercard Rev 1.4 (2 of 2)
Si473x-EVB Daughtercard (Rev 1.4) ships configured for external RCLK, supplied by the Si47xx-EVB Baseboard.
To configure for crystal oscillator operation:
1. Remove R9.
2. Remove R10.
3. Short J27.
4. Short J28.
5. Select "Use XOSCEN" at GUI initialization.
Note: Digital Audio Output is not available when configured for crystal oscillator.
Si47xx-EVB
Rev. 0.8 135
12.4. Si474x–EVB Daughtercard Rev 1.3
Figure 95. Si474x-EVB Daughtercard Rev 1.3 (1 of 2)
Si47xx-EVB
136 Rev. 0.8
Figure 96. Si474x-EVB Daughtercard Rev 1.3 (2 of 2)
Si47xx-EVB
Rev. 0.8 137
12.5. Si4749-EVB Daughtercard Rev 1.1
Figure 97. Si4749-EVB Daughtercard Rev 1.1 (1 of 2)
Si47xx-EVB
138 Rev. 0.8
Figure 98. Si4749-EVB Daughtercard Rev 1.1 (2 of 2)
Note: C4, C6, R9, and R11 manually added to Si4749EVB Rev 1.0 to create Si4749EVB Rev 1.1.
Si47xx-EVB
Rev. 0.8 139
12.6. Antenna Card Schematics
12.6.1. Si473x Ferrite Antenna Card Rev 1.2
Figure 99. Ferrite Antenna Card Rev 1.2
12.6.2. Si473x Air Loop Antenna Card Rev 1.2
Figure 100. Airloop Antenna Card Rev 1.2
Si47xx-EVB
140 Rev. 0.8
12.6.3. Si473x SW/WB Antenna Card Rev 1.3
Figure 101. Si473x SW/WB Antenna Card Rev 1.3
12.6.4. Si474x Antenna Dummy Card Rev 1.0
Figure 102. Si474x Antenna Dummy Card Rev 1.0
Note: If an SW band is selected using the SW/WB Antenna Card, set the varactor to 1 for best performance. LW
not supported with SW/WB Antenna Card.
Si47xx-EVB
Rev. 0.8 141
13. Layout
13.1. Si47xx-EVB Baseboard Rev 1.6
Figure 103. Si47xx-EVB Baseboard Rev 1.6—Primary Assembly Silkscreen
Figure 104. Si47xx-EVB Baseboard Rev 1.6—Secondary Assembly Silkscreen
Si47xx-EVB
142 Rev. 0.8
Figure 105. Si47xx-EVB Baseboard Rev 1.6—Primary Side
Figure 106. Si47xx-EVB Baseboard Rev 1.6—Ground Plane
Si47xx-EVB
Rev. 0.8 143
Figure 107. Si47xx-EVB Baseboard Rev 1.6—Power Plane
Figure 108. Si47xx-EVB Baseboard Rev 1.6—Secondary Side
Si47xx-EVB
144 Rev. 0.8
13.2. Si471x/2x-EVB Daughtercard Rev 1.4
Figure 109. Si471x/2x-EVB Daughtercard (Rev 1.4)—Primary Assembly Silkscreen
Figure 110. Si471x/2xEVB Daughtercard (Rev 1.4)—Secondary Assembly Silkscreen
Si47xx-EVB
Rev. 0.8 145
Figure 111. Si471x/2x-EVB Daughtercard (Rev 1.4)—Primary Side
Figure 112. Si471x/2x-EVB Daughtercard (Rev 1.4)—Ground Plane
Si47xx-EVB
146 Rev. 0.8
Figure 113. Si471x/2x-EVB Daughtercard (Rev 1.4)—Power Plane
Figure 114. Si471x/2x-EVB Daughtercard (Rev 1.4)—Secondary Side
Si47xx-EVB
Rev. 0.8 147
13.3. Si473x-EVB Daughtercard Rev 1.4
Figure 115. Si473x-EVB Daughtercard Rev 1.4 - Primary Assembly Silkscreen
Figure 116. Si473x-EVB Daughtercard Rev 1.4 - Secondary Assembly Silkscreen
Si47xx-EVB
148 Rev. 0.8
Figure 117. Si473x-EVB Daughtercard Rev 1.4—Primary Side
Figure 118. Si473x-EVB Daughtercard Rev 1.4—Ground Plane
Si47xx-EVB
Rev. 0.8 149
Figure 119. Si473x-EVB Daughtercard Rev 1.4—Power Plane
Figure 120. Si473x-EVB Daughtercard Rev 1.4—Secondary Side
Si47xx-EVB
150 Rev. 0.8
13.4. Si474x-EVB Daughtercard Rev 1.3
Figure 121. Si474x-EVB Daughtercard Rev 1.3—Primary Assembly Silkscreen
Si47xx-EVB
Rev. 0.8 151
Figure 122. Si474x-EVB Daughtercard Rev 1.3—Primary Side
Figure 123. Si474x-EVB Daughtercard Rev 1.3—Ground Plane
Si47xx-EVB
152 Rev. 0.8
13.5. Si4749-EVB Daughtercard Rev 1.1
Note: For Figures 124 thro ugh 129: C4, C6, R9, and R11 manually added to Si4749EVB Rev 1.0 to create Si4749 EVB Rev
1.1.
Figure 124. Si4749-EVB Daughtercard Rev 1.1—Primary Side Silkscreen
Si47xx-EVB
Rev. 0.8 153
Figure 125. Si4749-EVB Daughtercard Rev 1.1—Secondary Side Silkscreen
Figure 126. Si4749-EVB Daughtercard Rev 1.1—Primary Side
Figure 127. Si4749-EVB Daughtercard Rev 1.1—Ground Plane
Si47xx-EVB
154 Rev. 0.8
Figure 128. Si4749-EVB Daughtercard Rev 1.1—Power Plane
Figure 129. Si4749-EVB Daughtercard Rev 1.1—Secondary Side
Si47xx-EVB
Rev. 0.8 155
13.6. Antenna Cards
13.6.1. Si473x Ferrite Antenna Card Rev 1.2
Figure 130. Si473x Ferrite Antenna Card Rev 1.2—Primary Side Silkscreen
Figure 131. Si473x Ferrite Antenna Card Rev 1.2—Secondary Side Silkscreen
Si47xx-EVB
156 Rev. 0.8
Figure 132. Si473x Ferrite Antenna Card Rev 1.2—Primary Side
Figure 133. Si473x Ferrite Antenna Card Rev 1.2—Secondary Side
Si47xx-EVB
Rev. 0.8 157
13.6.2. Si473x Air Loop Antenna Card Rev 1.2
Figure 134. Si473x Air Loop Antenna Card Rev 1.2—Primary Side Silkscreen
Figure 135. Air Loop Antenna Card Rev 1.2—Secondary Side Silkscreen
Si47xx-EVB
158 Rev. 0.8
Figure 136. Si473x Air Loop Antenna Card Rev 1.2—Primary Side
Figure 137. Si473x Air Loop Antenna Card Rev 1.2—Secondary Side
Si47xx-EVB
Rev. 0.8 159
13.6.3. Si473x SW/WB Antenna Card Rev 1.3
Figure 138. Si473x SW/WB Antenna Card Rev 1.3—Primary Side Silkscreen
Figure 139. Si473x SW/WB Antenna Card Rev 1.3—Secondary Side Silkscreen
Si47xx-EVB
160 Rev. 0.8
Figure 140. Si473x SW/WB Antenna Card Rev 1.3—Primary Side
Figure 141. Si473x SW/WB Antenna Card Rev 1.3—Secondary Side
Si47xx-EVB
Rev. 0.8 161
13.6.4. Si474x Antenna Dummy Card Rev 1.0
Figure 142. Si474x Antenna Dummy Card Rev 1.1—Primary Side Silkscreen
Figure 143. Si474x Antenna Dummy Card Rev 1.0—Secondary Side Silkscreen
Si47xx-EVB
162 Rev. 0.8
Figure 144. Si474x Antenna Dummy Card Rev 1.0—Primary Side
Figure 145. Si474x Antenna Dummy Card Rev 1.0—Secondary Side
Si47xx-EVB
Rev. 0.8 163
DOCUMENTATION CHANGE LIST
Revision 0.1 to Revision 0.2
Updated Product Family in Table 1 on page 1.
Updated Si4740/41 Proper ty List in Figure on page
67 and Table 15 on page 67.
Clarified varactor recommendation with SW
operation using SW/WB Antenna Card.
Added instructions for daughtercard configurations
with crystal oscillator operation.
Added Si4707 and SAME support to Section 7.
Revision 0.2 to Revision 0.3
Added Si4742/43 support.
Revision 0.3 to Revision 0.4
Removed Si4706, Si4707, and Si474x NDA
information from document.
Revision 0.4 to Revision 0.5
Updated for new 4.0 GUI version
Updated EVB BOM and Schematics to 1.6
Revision 0.5 to Revision 0.6
Added information on State Management
Updated figures to represent Silicon Labs Audio GUI
version 07.2.0
Revision 0.6 to Revision 0.7
Added Si4706/07/4x-EVB information
Revision 0.7 to Revision 0.8
Updated for GUI version 8.2.13
Disclaimer
Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers
using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific
device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories
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