4-12
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Connector Pin Assignments
4
Reset and Abort Header (J21)
A three-pin header is provided to facilitate remote reset and abort
operations. Connection to J21 will allow external stimulation of the Reset
and Abort signal lines just as if the front panel switches were depressed.
The reset and abort signal lines must be asserted for a minimum time
period of 10 microseconds to assure the input will take effect. The
connector pin-out is defined below.
Debug Connector (J16)
A 190-pin connector (J16 on the MCP750HA base board) provides access
to the processor bus (MPU bus) and some bridge/memory controller
signals. It can be used for debugging purposes. The pin assignments are
listed in the following table.
Table 4-12. Reset/Abort Header J21
1
ABORT_L (Active low processor abort)
2
GND (Ground)
3
RESET_L (Active low board reset)
Table 4-13. Debug Connector (J16)
1
PA0
PA1
2
3
PA2
PA3
4
5
PA4
PA5
6
7
PA6
PA7
8
9
PA8
PA9
10
11
PA10
PA11
12
13
PA12
PA13
14
15
PA14
PA15
16
17
PA16
PA17
18
19
PA18
GND
PA19
20
21
PA20
PA21
22
23
PA22
PA23
24
Summary of Contents for MCP750HA Series
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