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.

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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.

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RS232 Serial (J4)

This is a male DB9 connector. Signals are shown in the following table:

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.

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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.

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.

Configuration Switches (SW1)

Details on the Configuration Switches can be found in section 2.2.6.

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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.

RESET (SW3)

The RESET

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.