User`s manual

10 PCA-6740 User's Manual
2.3 Jumpers and connectors
Connectors on the board link it to external devices such as hard disk
drives, a keyboard or expansion bus connectors. In addition, the board
has a number of jumpers that allow you to configure your system to
suit your application.
The table below lists the function of each of the board jumpers and
connectors:
Table 2-1: Jumpers
Label Function
J1 CMOS Charge & Discharge
J2 LAN Power select
JP1 LCD High Drive Signal Buffer Power
JP2 RS-232/RS-422/RS-485 select
JP3 DOC
®
2000 Address select
JP4 Watchdog timer