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10 PCM-6890B User Manual
Jumpers and connectors
Connectors on the board link it to external devices such as hard
disk drives, a keyboard, or floppy drives. In addition, the board
has a number of jumpers that allow you to configure your system
to suit your application.
The following tables list the function of each of the board's
jumpers and connectors.
Jumpers
Label Function
J1 Clear CMOS
J2 System temperature thermal sensor
J3 COM4 RI pin voltage select
J4 COM3 RI pin voltage select
J5 Audio output select
J6 ATX soft-power switch connector
J7 COM2 RS-232/422/485 select
J8 LCD clock select
J9 LCD driving voltage select
J10 COM2 RS-232/422/485 select
SW1 (2~3) DOC address select
JP1 Mic_Amp