SBC comm AMD SBC-770 - Manual (Page 51)

40 SBC-770 User Manual
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)
Pin Signal
1 KB DATA
2 MS DATA
3 GND
4 Vcc
5 KB CLOCK
6 MS CLOCK
Internal keyboard connector (CN13)
Pin Signal
1 KB CLOCK
2 KB DATA
3 N.C.
4 GND
5 Vcc