DC9S08AC60 - NXP SEMICONDUCTORS

DOC-0441-010, REV A

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DEMOACEX

Peripheral Expansion Board

Hardware User Guide

DEMOACEX USER GUIDE APRIL 3, 2008

CONTENTS

CAUTIONARY NOTES ..............................................................................................................3

TERMINOLOGY.........................................................................................................................3

FEATURES ................................................................................................................................4

REFERENCES...........................................................................................................................5

GETTING STARTED..................................................................................................................5

APPLICATION DEVELOPMENT...............................................................................................5

HARDWARE CONFIGURATION...............................................................................................5

POWER................................................................................................................................. 5

E-FIELD SENSOR................................................................................................................. 5

CAN PORT ............................................................................................................................ 6

USER LED’S ......................................................................................................................... 7

IO HEADER........................................................................................................................... 8

TROUBLESHOOTING................................................................................................................9

FIGURES

Figure 1: CAN_EN Option Header..............................................................................................7

Figure 2: IO Header Connector ..................................................................................................8

TABLES

Table 1 : E-Field Sensor Input Configuration.............................................................................6

Table 2: User LED’s....................................................................................................................7

REVISION

Date Rev Comments

April 3, 2008 A Initial Release.

DEMOACEX USER GUIDE APRIL 3, 2008

CAUTIONARY NOTES

1) Electrostatic Discharge (ESD) prevention measures should be used when handling this

product. ESD damage is not a warranty repair item.

2) Axiom Manufacturing does not assume any liability arising out of the application or use of

any product or circuit described herein; neither does it convey any license under patent

rights or the rights of others.

3) EMC Information on the DEMOACEX board:

a) This product, as shipped from the factory with associated power supplies and cables,

has been verified to meet with FCC requirements as a CLASS A product.

b) This product is designed and intended for use as a development platform for hardware

or software in an educational or professional laboratory.

c) In a domestic environment, this product may cause radio interference in which case the

user may be required to take adequate prevention measures.

d) Attaching additional wiring to this product or modifying the product operation from the

factory default as shipped may effect its performance and cause interference with other

apparatus in the immediate vicinity. If such interference is detected, suitable mitigating

measures should be taken.

TERMINOLOGY

This development board applies option selection jumpers. Terminology for application of the

option jumpers is as follows:

Jumper on, in, or installed = jumper is a plastic shunt that fits across 2 pins and the shunt is

installed so that the 2 pins are connected with the shunt.

Jumper off, out, or idle = jumper or shunt is installed so that only 1 pin holds the shunt, no 2

pins are connected, or jumper is removed. It is recommended that the jumpers be placed

idle by installing on 1 pin so they will not be lost.

Cut-Trace – a circuit trace connection between component pads. The circuit trace may be

cut using a knife to break the default connection. To reconnect the circuit, simply install a

suitably sized 0-ohm resistor or attach a wire across the pads.

Signal names followed by an asterisk (*) denote active-low signals.

DEMOACEX USER GUIDE APRIL 3, 2008

FEATURES

The DEMOACEX is a peripheral expansion board designed to interface with the DEMOAC

board. The DEMOACEX applies the Freescale MC33794 E-Field Imaging Sensor connected

to touch-pad in various arrangements. An 80-pin IO header allows the DEMOACEX to con-

nect directly to the DEMOAC board.

DEMOACEX Features:

• 80-pin MCU PORT connects to DEMOAC board

• 9ch, E-Field Sensor

• E-Field Touch Pad including Rotary Dial and Push-

Buttons

• 2 Low-Pass RC Filters

• 5V – 12V Boost Switcher Power Supply for E-Field

Sensor

• LEDs – 10 User, 1 E-Field Lamp

• CAN 2.0 A/B PHY w/ 3-pos header

• Jumpers to disconnect all IO signals

• SOIC and TSSOP pads for external IC's

• Large thru-hole prototyping area w/ +adjacent 5V

and GND

DEMOACEX Board Size: 6.0” x 4.5”MCU Modules:

DEMOACEX USER GUIDE APRIL 3, 2008

REFERENCES

The following documents should be referenced during application development using the

DEMOAC and DEMOACEX. These documents are available on the Axiom Manufacturing web

site at www.axman.com/support.

DEMOACEX_UG.pdf DEMOACEX User Guide (this document)

DEMOACEX_QSG.pdf DEMOACEX Quick Start Guide

DEMOACEX_SCH_A.pdf DEMOACEX Schematic

DEMOACEX_Silk_A.pdf DEMOACEX Top Silk

GETTING STARTED

To get started quickly, please refer to the DEMOACEX Quick Start Guide. This quick start will

illustrate connecting the board to a PC, installing the correct version of CodeWarrior Develop-

ment Studio, and running a simple program.

APPLICATION DEVELOPMENT

The DEMOACEX is designed for use with the DEMOAC board. Please refer to the DEMOAC

documentation for details on application development.

HARDWARE CONFIGURATION

The DEMOACEX applies the Freescale MC33794 E-Field sensor, 12 green LEDs, a CAN

PHY, and 2 RC filters. Inputs to the E-Field sensor are provided from touch-pads in various

configurations.

POWER

Power to the DEMOACEX is provided from IO header on pins J1-1 and J1-3. Pin J1-1 is con-

nected directly to the +5V rail on the DEMOACEX. Pin J1-3 is connected directly to the GND

rail. No protection is provided on this power input. When powering the board, other than

through the DEMOAC, care must be used to prevent overdriving this input.

E-FIELD SENSOR

The DEMOACEX applies the Freescale MC33794 E-Field Sensor and touch-pads in various

configurations. Refer to the MC33794 data sheet for details on using the device.

DEMOACEX USER GUIDE APRIL 3, 2008

Touch-pads configurations include a rotary dial with center button, 3 solid push buttons using a

single electrode input and 3 intertwined push buttons using 2 electrodes each. The rotary dial

is created using 3 touch-pads of non-uniform shape intertwined in a circular pattern. The solid

push-button touch-pads are created using a solid electrode placed over a solid shield. The

intertwined push buttons are created by interlacing 2 electrode inputs. Use of the intertwined

push buttons does not require activating the shield electrode.

Touch-pads are connected to the E-Field Sensor inputs as shown in the table below.

Table 1 : E-Field Sensor Input Configuration

Sensor Input E-Field Sensor

Electrode

Push-Buttons:

Button 1 E7

Button 2 E3

Button 3 E2

Button 4 E1

Button 5 E3 & E1

Button 6 E3 & E2

Button 7 E2 & E1

Rotary Dial:

Left Hand Lobe E6

Center Lobe E4

Right Hand Lobe E5

Three electrode selection inputs on the E-Field Sensor select the active electrode. The

Shield_EN input on the sensor enables or disables the e-field shield. These inputs are con-

nected to PTC signals on the DEMOAC board through the IO header.

A single level output from the sensor provides the detected analog level output to the

DEMOAC board through the IO header. This signal is available on AD1P11 on the DEMOAC.

A yellow LAMP LED indicates normal operation. This LED is normally on. When OFF this

LED indicates a fault condition. Refer to the MC337094 Datasheet for further details.

CAN PORT

The DEMOACEX applies the TJA1040 CAN PHY. The PHY is connected to the IO header

through the CAN_EN option header. Installing a shunt enables the associated signal. Re-

moving the shunt disables the associated signal.

DEMOACEX USER GUIDE APRIL 3, 2008

Figure 1: CAN_EN Option Header

CAN_EN ON OFF

● ● STB Enabled Disabled

● ● TX Enabled Disabled

● ● RX Enabled Disabled

Differential CAN signal termination is applied. A 120 ohm termination resistor with option

jumper allows termination to be applied or removed. The CANT_EN option jumper applies or

removes the CAN termination.

User LED’s

Twelve user LED's are provided for output indication and are configured for active-low signal-

ing. The table below details the LED connections to the target MCU

Table 2: User LED’s

LED J1- DEMOAC Signal

LED5 13 PTE2/RGPIO2/FTM1CH0

LED6 15 PTE3/RGPIO3/FTM1CH1

LED7 23 PTE4/RGPIO4/SS1*

LED8 19 PTE5/RGPIO5/MISO1

LED9 17 PTE6/RGPIO6/MOSI1

LED10 21 PTE7/RGPIO7/SPSCK1

LED11 50 PTA2

LED12 52 PTA3/ACMP2O

LED13 54 PTA4/ACMP2-

LED14 56 PTA5/ACMP2+

LED15 58 PTA6/AD1P16

LED16 60 PTA7/AD1P17

NOTE: LED5 input signal also provides RC filter input

LED11 input signal also provides CAN PHY standby control

DEMOACEX USER GUIDE APRIL 3, 2008

IO HEADER

The IO Header provides access to on-board signals. The Figure below shows the pin-out of

the IO header

Figure 2: IO Header Connector

VDD 1 2

VSS 3 4

5 6

7 8

910

11 12

PTE2/RGPIO2/FTM1CH0 13 14

PTE3/RGPIO3/FTM1CH1 15 16

PTE6/RGPIO6/MOSI1 17 18

PTE5/RGPIO5/MISO1 19 20

PTE7/RGPIO7/SPSCK1 21 22

PTE4/RGPIO4/SS1* 23 24

25 26 PTA0/TXCAN

PTD3/KBI1P6/AD1P11 27 28 PTA1/RXCAN

29 30

31 32

33 34

35 36 PTC4/SS2*

PTF4/RGPIO12/FTM2CH0 37 38

39 40

41 42 PTC0/SCL1

43 44 PTC1/SDA1

45 46 PTC2/MCLK

47 48

49 50 PTA2

51 52 PTA3/ACMP2O

53 54 PTA4/ACMP2-

55 56 PTA5/ACMP2+

57 58 PTA6/AD1P16

59 60 PTA7/AD1P17

61 62

63 64

65 66

67 68

69 70

71 72

73 74

75 76

77 78

79 80

DEMOACEX USER GUIDE APRIL 3, 2008

TROUBLESHOOTING

The DEMOACEX is fully tested and operational before shipping. If it fails to function properly,

inspect the board for obvious physical damage first.

Most common problems are related to improperly configured options or communications pa-

rameters.

1. Verify default option jumper settings.

2. Verify the yellow LAMP LED is ON.

3. Verify the DEMOACEX is properly and securely attached to the DEMOAC board

4. Ensure the DEMOAC board is configured properly and that power is applied.

5. If possible, verify an approximately 120 kHz square wave output at E-Field sensor (U2-

24)

If the above Troubleshooting Tips fail to correct the problem, please contact Freescale Semi-

conductors for further assistance. Please refer to the Technical Information Card (TIC) in-

cluded in the kit. Users may also contact Axiom Manufacturing at support@axman.com for

additional support.