Reset And Abort Header (J21); Debug Connector (J16); Table 4-12. Reset/Abort Header J21; Table 4-13. Debug Connector (J16) - Motorola MCP750HA Series Installation And Use Manual

Connector Pin Assignments

Reset and Abort Header (J21)

4

Debug Connector (J16)

4-12
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.

Table 4-12. Reset/Abort Header J21

1 ABORT_L (Active low processor abort)
2 GND (Ground)
3 RESET_L (Active low board reset)
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 4-13. Debug Connector (J16)

1 PA0
3 PA2
5 PA4
7 PA6
9 PA8
11 PA10
13 PA12
15 PA14
17 PA16
19 PA18
21 PA20
23 PA22
PA1
PA3
PA5
PA7
PA9
PA11
PA13
PA15
PA17
GND PA19
PA21
PA23
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