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44 PPC-A84/A120 User's Manual
3.6.1 Watchdog activity selection (JP2)
When the watchdog timer activates (i.e. CPU processing has come to a
halt), it can reset the system or generate an interrupt on IRQ11. This
can be set via jumper JP2 as shown below:
Table3-5: Watchdog activity selection (JP2)
System reset IRQ11
* default setting
3.7 COM2 RS-232/422/485 setting (JP3,
JP4,JP5)
COM2 can be configured to operate in RS-232/422/485 mode. This is
done via JP3,JP4,and JP5.
Table 3-6: COM2 RS-232/422/485 setting (JP3, JP4)
*RS-232 RS-422/485
JP4 JP4
JP3 JP3
* default setting
2 46
246
1
62
5
1
62
5
51
62
51
62