ASAHI KASEI [AKD4254-A]
. AK4254 Evaluation Board Rev.2
A
KD4254-
A
GENERAL DESCRIPTION
AKD4254-A is an evaluation board for AK4254 that has 7:2 video switches. This board can achieve the
interface with video systems via RCA connectors.
Ordering guide
AKD4254-A --- AK4254 Evaluation Board
10-wire flat cable for connection with printer port of PC (IBM-AT compatible machine),
control software for AK4254, driver for control software on Windows 2000/XP are
packed with this.
Control software does not work on Windows NT
Windows 2000/XP needs an installation of driver.
Windows 95/98/ME does not need an installation of driver.
FUNCTION
• RCA connectors for video signal: 7 inputs, 2 outputs
• 10-pin header for I2C/3-wi re serial control
AK4254
AVDD
AVDD
I/O
Buffer
Port1
VIN1
VOUT1
VIN2
VIN3
VIN4
VIN5
VIN6
VOUT2
VIN7
Figure 1. AKD4254-A Block Diagram
* Circuit diagram and PCB layout are attached at the end of this manual.
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ASAHI KASEI [AKD4254-A]
EVALUATION BOARD MANUAL
Operation sequence
1) Set up power supply lines.
Name of jack Color of jack Voltage Used for Open / connect Default Setting
AVDD Red +3.0V AVDD of AK4254
and Digital Logic Should be always
connected. +3V
AGND Black 0V Analog Ground Should be always
connected. 0V
Table 1. Set up the power supply lines
(Note) Each supply line should be distributed from the power supply unit.
2) Set-up jumper pins and DIP switches. (See the followings.)
3) Power on.
AK4254 should be reset once bringing SW1 (PDN) to “L” upon power-up.
Evaluation Mode
AKD4254-A can evaluate AK4254 by the following mode.
[1] Parallel Mode
[2] Serial Mode (3-wire)
[3] Serial Mode (I2C)
[1] Parallel Mode
(1-1) Set up jumper pins [JP3, JP4]
(OPEN) (OPEN)
JP4 CSNJP3 SDA
(1-2) Set up DIP Switches [SW2]
Pin No. [SW2] Pin Name ON (“H”,“1”) / OFF (“L”,“0”)
1 SEL10 Input Select of VOUT1
2 SEL11 Input Select of VOUT1
3 SEL12 Input Select of VOUT1
4 SEL20 Input Select of VOUT2
5 SEL21 Input Select of VOUT2
6 SEL22 Input Select of VOUT2
7 P/S ON (“H”)
Table 2. Set up DIP Switches for Parallel Mode
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ASAHI KASEI [AKD4254-A]
[2] Serial Mode (3-wire)
(1-1) Set up jumper pins [JP3, JP4]
JP3 SDA JP4 CSN
(1-2) Set up DIP Switches [SW2]
Pin No. [SW2] Pin Name ON (“H”,“1”) / OFF (“L”,“0”)
1 CAD0
Chip Address Select (Note1)
2 CAD1
Chip Address Select (Note1)
3 --- “Don’t Care”
4 --- “Don’t Care”
5 --- “Don’t Care”
6 I2C OFF (“L”)
7 P/S OFF (“L”)
Table 3. Set up DIP Switches for Serial Mode (3-wire)
(Note1) Chip Address is selected by CAD1, CAD0 pin
[3] Serial Mode (I2C)
(1-1) Set up jumper pins [JP3, JP4]
JP3 SDA JP4 CSN
(1-2) Set up DIP Switches [SW2]
Pin No. [SW2] Pin Name ON (“H”,“1”) / OFF (“L”,“0”)
1 CAD0
Chip Address Select (Note1)
2 CAD1
Chip Address Select (Note1)
3 --- “Don’t Care”
4 --- “Don’t Care”
5 --- “Don’t Care”
6 I2C ON (“H”)
7 P/S OFF (“L”)
Table 4. Set up DIP Switches for Serial Mode (I2C)
(Note1) Chip Address is selected by CAD1, CAD0 pin
Set up jumper pins
1. JP1 (GND) : Analog ground and Digital ground
OPEN : Separated.
SHORT : Common. (The connector “DGND” can be open.) <Default>
2. JP5 (AVDD(D-A)):AVDD and D3.3V_IN(Digital Logic power supply)
OPEN : Separated.
SHORT : Common. (JP5 should be “SHORT”.) <Default>
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ASAHI KASEI [AKD4254-A]
The function of the toggle SW
[SW1] (PDN) : Resets the AK4254. Keep “H” during normal operation.
Set up DIP switch
[SW2-8] (TEST) : Set up TEST-pin. Keep “H” during normal operation.
Serial Control
The AK4254 can be controlled via the printer port (parallel port) of IBM-AT compatible PC. Connect printer port
(parallel port) of PC and PORT1 (CTRL) of AKD4254-A by 10-wire flat cable (packed with AKD4254-A).
Take care of the direction of 10-pin connector and 10-pin header.
PC
Red
10-pin
connector
10-wire
flat cable 10-pin
header
PORT1
CTRL
AKD4254-A
CSN
CCLK/SCI
CDTI/SDA
SDA(ACK)
10
6
1
5
Connect
Figure 2. 10-wire flat cable, 10-pin connector, and 10-pin header
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ASAHI KASEI [AKD4254-A]
Input / Output circuit
(1) Video Input Circuit
VIN1~VIN7 Input circuits
Figure 3. VIN Input circuit
(2) Video Output Circuit
VOUT1, VOUT2 Output circuits
Figure 4. VOUT1 Output circuit
Figure 5. VOUT2 Output circuit
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ASAHI KASEI [AKD4254-A]
Control Software Manual
Set-up of evaluation board and control software
1. Set up the AKD4254-A according to previous term.
2. Connect IBM-AT com patible PC with AKD4254-A by 10-line type fl at cable (packed with AKD4254-A). Take care
of the direction of 10pin header. (Please install the driver in the CD-ROM when this control software is used on
Windows 2000/XP. Please refer “Installat ion Manual of Control Software Driver by AKM device control software”.
In case of Windows95/98/ME, this installation is not needed. This control software does not operate on Windows
NT.)
3. Insert the CD-ROM labeled “AKD4254-A Evaluation Kit” into the CD-ROM drive.
4. Access the CD-ROM drive and double-click the icon of “akd4254-a.exe” to set up the control program.
5. Then please evaluate according to the follows.
Operation flow
Keep the following flow.
1. Set up the control program according to explanation above.
2. Click “Port Reset” button.
Explanation of each buttons
1. [Port Reset]: Set up the USB interface board (AKDUSBIF-A).
2. [Write default]: Initialize the register of AK4254.
3. [All Write]: Write all registers that is curren tly displayed.
4. [Function1]: Dialog to write data by keyboard operation.
5. [Function3]: The sequence of register setting can be set and executed.
6. [Function4]: The sequence that is created on [Function3] can be assigned to buttons and executed.
7. [Function5]: The register setting that is created by [SAVE] function on main window can be assigned to
buttons and executed.
8. [SAVE]: Save the current register setting.
9. [OPEN]: W r ite the saved values to all register.
10. [Write]: Dialog to write data by mouse operation.
Indication of data
Input data is indicat ed on the register map. Red lett er indicates “H” or “1” and blue one indicates “L” or “0”. Blank is the
part that is not defined in the datasheet.
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ASAHI KASEI [AKD4254-A]
Explanation of each dialog
1. [Write Dialog]: Dialog to write data by mouse operation
There are dialogs corresponding to each register.
Click the [Write] button corresponding to each register to set up the dialog. If you check the check box, data becomes
“H” or “1”. If not, “L” or “0”.
When writing the input data to AK4254, click [OK] button. If not, click [Cancel] button.
2. [Function1 Dialog]: Dialog to write data by keyboard operation
Address Box: Input registers address in 2 figures of hexadecimal.
Data Box: Input registers data in 2 figures of hexadecimal.
When writing the input data to AK4254, click [OK] button. If not, click [Cancel] button.
3. [Save] and [Open]
3-1. [Save]
Save the current register setting data. The extension of file name is “akr”.
(Operation flow)
Click [Save] Button.
Set the file name and push [Save] Button. The extension of file name is “akr”.
3-2. [Open]
The register setting data saved by [Save] is written to AK4254. The file type is the same as [Save].
(Operation flow)
(1) Click [Open] Button.
(2) Select the file (*.akr) and Click [Open] Button.
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ASAHI KASEI [AKD4254-A]
4. [Function3 Dialog]
The sequence of register setting can be set and executed.
(1) Click [F3] Button.
(2) Set the control sequence.
Set the address, Data and Interval time. Set “-1” to the address of the step where the sequence should be
paused.
(3) Click [Start] button. Th en this sequence is executed.
The sequence is paused at the step of Interval="-1". Click [START] button, the sequence restarts from
the paused step.
This sequence can be saved and opened by [Save] and [Open] button on the [Function3] window. The extension
of file name is “aks”.
Figure 1. Window of [F3]
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ASAHI KASEI [AKD4254-A]
5. [Function4 Dialog]
The sequence that is created on [Function3] can be assigned to buttons and executed. When [F4] button is clicked,
the window as shown in Figure 2 opens.
Figure 2. [F4] window
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ASAHI KASEI [AKD4254-A]
5-1. [OPEN] buttons on left side and [START] buttons
(1) Click [OPEN] button and select the sequence file (*.aks).
The sequence file name is displayed as shown in Figure 3.
Figure 3. [F4] window(2)
(2) Click [START] button, then the sequence is executed.
5-2. [SAVE] and [OPEN] buttons on right side
[SAVE]: The sequence file names can assign be saved. The file name is *.ak4.
[OPEN]: The sequence file names assign that are saved in *.ak4 are loaded.
5-3. Note
(1) [Function4] doesn't support the pause function of sequence function.
(2) All files need to be in same folder used by [SAVE] and [OPEN] function on right side.
(3) When the sequence is changed in [Function3], the fi le should be loaded again in order t o reflect the change.
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ASAHI KASEI [AKD4254-A]
6. [Function5 Dialog]
The register setting that is created by [SAVE] function on m ain window can be assi gned to buttons and executed.
When [F5] button is clicked, the following window as shown in Figure 4 opens.
Figure 4. [F5] window
6-1. [OPEN] buttons on left side and [WRITE] button
(1) Click [OPEN] button and select the register setting file (*.akr).
(2) Click [WRITE] butto n, then the register setting is executed.
6-2. [SAVE] and [OPEN] buttons on right side
[SAVE]: The register setting file names assign can be saved. The file name is *.ak5.
[OPEN]: The register setting file names assign that are saved in *.ak5 are loaded.
6-3. Note
(1) All files need to be in same folder used by [SAVE] and [OPEN] function on right side.
(2) When the register setting is changed by [Save] Button in ma in window, the file should be loaded again in order
to reflect the change.
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ASAHI KASEI [AKD4254-A]
MEASUREMENT RESULTS
Video
[Measurement condition]
• Signal Generator : Sony Tectonics TG2000
• Measurement unit : Sony Tectonics VM700T
• Power Supply : AVDD=3V
• Temperature : Room
• Measurement signal line path : VIN1 → VOUT1
Parameter Measurement conditions Results Unit
S/N Input = 0% flat field
BW= 100kHz to 6MHz 68.8 dB
Crosstalk Input = 100%Red(PAL),
Measured at VOUT1 70.4 dB
DG Input = Modulated 5 Step min. 0.00
max. 0.77 %
DP Input = Modulated 5 Step min. 0.00
max. 1.84 deg.
Plots
Figure 1-1. Noise spectrum (Input=0%flat field, BW=100kHz to 6MHz)
Figure 1-2 Crosstalk (Input= 100% red composite (VIN1), measured at VOUT1)
Figure 1-3 Crosstalk (Input= 100% red Y-Signal (VIN2), measured at VOUT1)
Figure 1-4 DG, DP (Input= Modulated 5 Step)
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ASAHI KASEI [AKD4254-A]
Plots(Video)
Figure 1-1. Noise spectrum (Input=0%flat field, BW=100kHz to 6MHz)
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ASAHI KASEI [AKD4254-A]
Figure 1-2 Crosstalk (Input= 100% red composite (VIN1), measured at VOUT1)
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ASAHI KASEI [AKD4254-A]
Figure 1-3 Crosstalk (Input= 100% red Y-Signal (VIN2), measured at VOUT1)
Figure 1-4 DG, DP (Input= Modulated 5 Step)
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ASAHI KASEI [AKD4254-A]
Revision History
Date
(YY/MM/DD) Manual
Revision Board
Revision Reason Contents
07/01/09 KM085203 2 First Edition
IMPORTANT NOT ICE
• These products and their specifications are subject to change without notice. Before considering any use or
application, consult the Asahi Kasei Microsystems Co., Ltd. (AKM) sales office or authorized distributor
concerning their current status.
• AKM assumes no liability for infringement of any patent, intellectual property, or other right in the application
or use of any information contained herein.
• Any export of these products, or devices or systems containing them, may require an export license or other
official approval under the law and regulations of the country of export pertaining to customs and tariffs,
currency exchange, or strategic materials.
• AKM products are neither intended nor authorized for use as critical components in any safety, life support, or
other hazard related device or system, and AKM assumes no responsibility relating to any such use, except
with the express written consent of the Representative Director of AKM. As used here:
(a) A hazard related device or system is one designed or intended for life support or maintenance of safety or
for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function or
perform may reasonably be expected to result in loss of life or in significant injury or damage to person or
property.
(b) A critical component is one whose failure to function or perform may reasonably be expected to result,
whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing
it, and which must therefore meet very high standards of performance and reliability.
• It is the responsibility of the buyer or distributor of an AKM product who distributes, disposes of, or otherwise
places the product wi th a third party to notify that party in advance of the above content and conditions, and the
buyer or distributor agrees to assume any and all responsibility and liability for and hold AKM harmless from
any and all claims arising from the use of said product in the absence of such notification.
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5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
AVDD_IN
TEST
P/S
VVIN1
VVIN2
VVIN3
VVIN4
VVIN5
VVOUT1
VVIN6
VVIN7
CAD0/SEL10
CAD1/SEL11
PDN
I2C/SEL22
CDTI/SDA/SEL21
4254_CCLK/SCL/SEL20
CSN/SEL12
VVOUT2
Title
Size Document Number Rev
Date: Sheet of
AK4254
0
AKD4254-A
A2
14
Title
Size Document Number Rev
Date: Sheet of
AK4254
0
AKD4254-A
A2
14
Title
Size Document Number Rev
Date: Sheet of
AK4254
0
AKD4254-A
A2
14
AGND DGND
CVDD1
1
CP1
2
CN1
3
CVSS1
4
CVEE1
5
VOUT1
6
AVDD
7
AVSS
8
CDTI/SDA/SEL21 22
I2C/SEL22 23
PDN 24
VOUT2 25
CVSS2 27
CVEE2 26
CN2 28
CCLK/SCL/SEL20 21
VIN2
12
VIN3
13
VIN4
14
TEST
9
P/S
10
VIN1
11
CAD0/SEL10 18
CAD1/SEL11 19
CSN/SEL12 20
VIN5
15 VIN6 16
VIN7 17
CP2 29
CVDD2 30
AK4254
U1
AK4254
U1
C3
1u
C3
1u
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CN1
30pin_1
CN1
30pin_1
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
CN2
30pin_2
CN2
30pin_2
JP1
GND(D-A)
JP1
GND(D-A)
C4
1u
C4
1u
+
C5
10u
+
C5
10u
C2
1u
C2
1u
R1
51
R1
51
C1
1u
C1
1u
C6
0.1u
C6
0.1u
A
A
B
B
C
C
D
D
E
E
E E
D D
C C
B B
A A
D3.3V_IN
PDN
D3.3V_IN
4254_CCLK/SCL/SEL20
TEST
P/S
CSN/SEL12
CDTI/SDA/SEL21
D3.3V_IN
CAD1/SEL11
CCLK/SCL/SEL20
CSN/SEL12
I2C/SEL22
CDTI/SDA/SEL21
CAD0/SEL10
D3.3V_IN
D3.3V_IN
D3.3V_IN
D3.3V_IN D3.3V_IN
CSN/SEL12
CCLK/SCL/SEL20
CDTI/SDA/SEL21
P/S
Title
Size Document Number Rev
Date: Sheet of
LOGIC
0
AKD4254-A
A3
24
Title
Size Document Number Rev
Date: Sheet of
LOGIC
0
AKD4254-A
A3
24
Title
Size Document Number Rev
Date: Sheet of
LOGIC
0
AKD4254-A
A3
24
LH
CCLK/SCI
CDTI/SDA
CSN
CAD0/SEL10
CAD1/SEL11
CCLK/SCL/SEL20
CDTI/SDA/SEL21
CSN/SEL12
I2C/SEL22
P/S
SDA(ACK)
TEST
R9
470
R9
470
R6
10k
R6
10k
3 4
14
7
U2B
74HC14
U2B
74HC14
C8
0.1u
C8
0.1u
1A
21Y 4
1B
3
2A
52Y 7
2B
6
3A
11 3Y 9
3B
10
4A
14 4Y 12
4B
13
A/B
1
G
15 VCC 16
GND 8
U4
74LVC157
U4
74LVC157
R3
10k
R3
10k
2
1
3
SW1
PDN
SW1
PDN
R5
10k
R5
10k
1 2
14
7
U2A
74HC14
U2A
74HC14
R4
10k
R4
10k
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SW2
MODE
SW2
MODE
213
JP3
SDA
JP3
SDA
1 2
14
7
U3A 74LVC07
U3A 74LVC07
C7
0.1u
C7
0.1u
R8
470
R8
470
R11
3.9k
R11
3.9k
213
JP4
CSN
JP4
CSN
R10
51
R10
51
21
D1
HSU119
D1
HSU119
1
2
3
4
5
6
7
8
9
RP1
47k
RP1
47k
R7
470
R7
470
R2
10k
R2
10k
1
2
3
4
5 6
7
8
9
10
PORT1
CTRL
PORT1
CTRL
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
AVDD
AVDD
D3.3V_IN
AVDD_IN
D3.3V_IN
Title
Size Document Number Rev
Date: Sheet of
POWER SUPPLY
0
AKD4254-A
A3
34
Title
Size Document Number Rev
Date: Sheet of
POWER SUPPLY
0
AKD4254-A
A3
34
Title
Size Document Number Rev
Date: Sheet of
POWER SUPPLY
0
AKD4254-A
A3
34
AGND
C12
0.1u
C12
0.1u
1
AVDD
T45_R
AVDD
T45_R
9 8
14
7
U2D
74HC14
U2D
74HC14
3 4
14
7
U3B
74LVC07
U3B
74LVC07
13 12
14
7
U3F
74LVC07
U3F
74LVC07
5 6
14
7
U2C
74HC14
U2C
74HC14
L1
(short)
L1
(short)
11 10
14
7
U3E
74LVC07
U3E
74LVC07
1
AGND
T45_BK
AGND
T45_BK
C11
0.1u
C11
0.1u
13 12
14
7
U2F
74HC14
U2F
74HC14
JP5
AVDD(D-A)
JP5
AVDD(D-A)
9 8
14
7
U3D
74LVC07
U3D
74LVC07
11 10
14
7
U2E
74HC14
U2E
74HC14
5 6
14
7
U3C
74LVC07
U3C
74LVC07
+
C9
47u
+
C9
47u
R12
(short)
R12
(short)
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
VVIN1
VVIN2
VVIN3
VVIN4
VVIN5
VVIN6
VVOUT1
VVIN7
VVOUT2
Title
Size Document Number Rev
Date: Sheet of
Video Block Input/Output Circuit
0
AKD4254-A
A3
44
Title
Size Document Number Rev
Date: Sheet of
Video Block Input/Output Circuit
0
AKD4254-A
A3
44
Title
Size Document Number Rev
Date: Sheet of
Video Block Input/Output Circuit
0
AKD4254-A
A3
44
R14
(open)
R14
(open)
R15
(open)
R15
(open)
R28
75
R28
75
C28
0.1u
C28
0.1u
C32
0.1u
C32
0.1u
R29
(short)
R29
(short)
12
3
4
5
J5
VIN3
J5
VIN3
12
3
4
5
J7
VIN5
J7
VIN5
12
3
4
5
J9
VIN7
J9
VIN7
R34
75
R34
75
R25
(short)
R25
(short)
R24
75
R24
75
R33
(short)
R33
(short)
R23
(short)
R23
(short)
R20
(open)
R20
(open)
R30
75
R30
75
C29
0.1u
C29
0.1u
C31
0.1u
C31
0.1u
1 2
3
4
5
J2
VOUT2
J2
VOUT2
R19
(open)
R19
(open)
12
3
4
5
J3
VIN1
J3
VIN1
12
3
4
5
J6
VIN4
J6
VIN4
R36
75
R36
75
C20
(open)
C20
(open)
R18
75
R18
75
R26
75
R26
75
R27
(short)
R27
(short)
R31
(short)
R31
(short)
C14
(open)
C14
(open)
1 2
3
4
5
J1
VOUT1
J1
VOUT1
C33
0.1u
C33
0.1u
12
3
4
5
J4
VIN2
J4
VIN2
C13
(open)
C13
(open)
12
3
4
5
J8
VIN6
J8
VIN6
R32
75
R32
75
C21
(open)
C21
(open)
R13
75
R13
75
C30
0.1u
C30
0.1u
R35
(short)
R35
(short)
C27
0.1u
C27
0.1u