SBC comm SBC-770 manual Keyboard and PS/2 mouse connector CN18, CN13

Keyboard and PS/2 mouse connector (CN18, CN13)

The mainboard provides a keyboard connector which supports both a keyboard and a PS/2 style mouse. In most cases, especially in embedded applications, a keyboard is not used. The standard PC/AT BIOS will report an error or fail during power-on-self-test (POST) after a reset if the keyboard is not present. The main- board BIOS Advanced setup menu allows you to select "Present" or "Absent" under the "System Keyboard" section. This allows no-keyboard operation in embedded system applications without the system halting under POST (power-on-self-test).

Keyboard and PS/2 mouse connector (CN18)

PinSignal

1KB DATA

2MS DATA

3GND

4Vcc

5KB CLOCK

6MS CLOCK

Internal keyboard connector (CN13)

PinSignal

1KB CLOCK

2KB DATA

3N.C.

4GND

5Vcc

40 SBC-770 User Manual