CME34M Hardware Manual - RTD Embedded Technologies, Inc.
CME34M Hardware Manual - RTD Embedded Technologies, Inc.
CME34M Hardware Manual - RTD Embedded Technologies, Inc.
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Utility Port Connector (CN5)<br />
The utility port connector implements the following functions:<br />
• PC/AT compatible keyboard port<br />
• PS/2 mouse port<br />
• Speaker port (0.1W output)<br />
• <strong>Hardware</strong> Reset input<br />
• Soft Power Button input<br />
• Battery input for Real Time Clock<br />
Table 8 provides the pinout of the multi-function connector.<br />
Table 8<br />
Utility Port Connector (CN5)<br />
Pin Signal Function In/Out<br />
1 SPKR Speaker Output (open collector) out<br />
2 PWR +5 V out<br />
3 RESET# <strong>Manual</strong> Push-Button Reset in<br />
4 PWRSW# Soft Power Button in<br />
5 KBD Keyboard Data in/out<br />
6 KBC Keyboard Clock out<br />
7 GND Ground —<br />
8 MSC Mouse Clock out<br />
9 BAT RTC Battery Input in<br />
10 MSD Mouse Data in/out<br />
Facing the connector pins, the pinout is:<br />
9 7 5 3 1<br />
BAT GND KBD RESET# SPKR<br />
MSD MSC KBC PWRSW# PWR<br />
10 8 6 4 2<br />
Speaker<br />
A speaker output is available on pins 1 and 2 of the multi-function connector. These outputs are controlled by a<br />
transistor to supply 0.1 W of power to an external speaker. The external speaker should have 8 Ω impedance and<br />
be connected between pins 1 and 2.<br />
BDM-610000076 Rev A Chapter 3: Connecting the cpuModule 27
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