This page is a reference for all the connectors on the Topaz Development Kit.
Connector Summary
The table below summarizes the connectors and switches found on Topaz Development Board. The sections following this table give specific details for each connector.
Designator
Connector
Location
J1
Stereo audio output
Top
J2
RJ-45 Ethernet
Top
J4
DB9 RS23 Serial (UART1)
Top
J5
LCD Connector
Bottom
J7
SD Card
Bottom
J9
JTAG
Top
J10
USB OTG Mini-AB
Top
J11
USB Host –A
Top
J12
Power (Barrel connector)
Top
J13
Power (0.1" header)
Top
EXP1
Expansion header 1 (0.1")
Top
EXP2
Expansion header 2 (0.1")
Top
EXP3
Expansion header 3 (0.1")
Top
SW1
Configuration Switches
Top
RESET
Reset Button
Top
USER
User Button
Top
POWER
Power LED
Top
USER_LED
User LED
Top
Connector Details
Power (J10, J12 and J13)
The Topaz Development Kit can be powered by:
J10 - USB Mini-AB connector
J12 – 2.1mm Barrel connector (centre positive)
J13 – 0.1" pitch header (+5V and 0V).
Not that powering the board via USB may not be sufficient for large LCDs (greater than 4.3") or if you have devices attached to the expansion connectors or USB host port. Note that J13 is not fitted to the board. This allows a polarized connector of your choice to be used.
RS232 Serial (J4)
This is a male DB9 connector. Signals are shown in the following table:
Pin
Signal
1
N/C
2
RXD
3
TXD
4
N/C
5
0V
6
N/C
7
RTS
8
CTS
9
N/C
RJ-45 Ethernet
This is configured as a standard 100Mbps connection. Connect using standard Ethernet twisted-pair cabling. A crossover cable will be required if you are connecting directly to your PC.
SD Card (J7)
The SD card connector is connected to the SD1 controller of the i.MX25. It supports SD memory and SDIO cards. The signals are connected as show below.
Pin
Signal
1
DAT3
2
CMD
3
0V
4
+3.3V
5
CLK
6
0V
7
DAT0
8
DAT1
9
DAT2
Card Detect
GPIO 4-3
Write Protect
GPIO 4-2
LCD and Touch Screen Interface (J5)
The Topaz Development Board has a 50-pin connector that includes all the signals required to interface to a number of different displays. Note: Some of these signals are 1.8V. Refer to the Topaz Reference Manual for details before interfacing to this connector.
Pin
Signal
1
+3.3V
2
+3.3V
3
VIN
4
VIN
5
CSPI1_MISO
6
CSPI1_MOSI
7
CSPI1_SS3
8
CSPI1_CLK
9
0V
10
LCD_LD0
11
LCD_LD1
12
LCD_LD2
13
LCD_LD3
14
LCD_LD4
15
LCD_LD5
16
LCD_LD6
17
LCD_LD7
18
LCD_LD8
19
LCD_LD9
20
LCD_LD10
21
LCD_LD11
22
LCD_LD12
23
LCD_LD13
24
LCD_LD14
25
LCD_LD15
26
0V
27
LCD_ACD_OE
28
LCD_VSYNC
29
LCD_HSYNC
30
LCD_LSCLK
31
0C
32
LCD_CONTRAST
33
GPIO 4-5
34
GPIO 4-6
35
GPIO 4-7
36
GPIO 4-8
37
GPIO 4-9
38
GPIO 4-10
39
GPIO 4-11
40
GPIO 4-12
41
I2C1_DAT
42
I2C1_CLK
43
0V
44
TOUCH_XN
45
TOUCH_XP
46
TOUCH_YN
47
TOUCH_YP
48
0V
49
VLED_FB
50
VLED
Configuration Switches (SW1)
Details on the Configuration Switches can be found in section 2.2.6.
Expansion Headers (EXP1, EXP2 and EXP3)
The Topaz Development Board has 3 general purpose expansion headers. These expose signals from the Topaz module that are not used directly on the Development Board. Each signal is labelled on the Development Board. Note that some signals are 1.8V.
EXP1
EXP2
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
1
0V
2
0V
1
I2C1_CLK
2
PWM1
3
+3.3V
4
+3.3V
3
I2C1_DAT
4
PWM2
5
AudioLineIn-L
6
SPI1_MISO
5
ONE_WIRE
6
PWM3
7
AudioLineIn-R
8
SPI1_MOSI
7
CLKO
8
CAN_TXD
9
AudioLineOut-L
10
SPI1_RDY
9
0V
10
CAN_RXD
11
AudioLineOut-R
12
SPI1_CLK
11
ADC_REF
12
UART4_RXD
13
AudioMicIn
14
SPI1_SS0
13
ADC_AUX0
14
UART4_TXD
15
0V
16
SPI1_SS1
15
ADC_AUX1
16
UART4_CTS
17
0V
18
SPI1_SS3
17
ADC_AUX2
18
UART4_RTS
19
SIM1_CLK
20
SIM2_CLK
19
UART2_CTS
20
UART3_RXD
21
SIM1_RST
22
SIM2_RST
21
UART2_RTS
22
UART3_TXD
23
SIM1_VEN
24
SIM2_VEN
23
UART2_RXD
24
UART3_CTS
25
SIM1_TX
26
SIM2_TX
25
UART2_TXD
26
UART3_RTS
27
SIM1_PD
28
SIM2_PD
27
MODULE_RESET
28
+3.3V
29
SIM1_RX
30
SIM2_RX
29
VIN
30
VIN
31
GP 3-23
32
GP3-24
31
0V
32
0V
EXP3
Pin
Signal
Pin
Signal
1
0V
2
0V
3
+3.3V
4
+3.3V
5
MESH_C
6
GP 3-19
7
MESH_D
8
ON/OFF
9
DRYICE_VOUT
10
CSI_D2
11
TAMPER_A
12
CSI_D3
13
TAMPER_B
14
CSI_D4
15
FUSE_VDD
16
CSI_D5
17
CSI_MCLK
18
CSI_D6
19
CSI_PIXCLK
20
CSI_D7
21
GP 3-15
22
CSI_D8
23
GP 3-16
24
CSI_D9
25
GP 1-5
26
CSI_HSYNC
27
GP 2-20
28
CSI_VSYNC
29
DRYICE_VBAT
30
VIN
31
0V
32
0V
RESET (SW3)
The RESET button shorts MODULE_RESET to 0V causing a hard reset of the CPU.
JTAG (J9)
The Topaz Development Board includes a standard 20-pin JTAG connector. The i.MX25 supports RTCK and DE_B signals and they have been included on this connector, however they are not necessary to use JTAG.
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