Specifications

HW400p/M Technical Reference - 1.0, March 6, 2002 COP (Common On-Chip Processor) Support 33

4-9. COP (Common On-Chip Processor) Support

The COP function on the MPC8245 processor allows a remote computer

system to access and control the internal operations of the processor. The

COP interface connects to the MPC8245 via its JTAG interface through the

header J8. Jumper J9 must be installed to enable the COP function.

Table 4-8 shows the COP header signal names and respective pin

assignments.

Figure 4-5 COP jumpers

Table 4-8 COP header signal names

Pin # COP Header Signal Name Pin # COP Header Signal Name

1TDO 2GND

3TDI 4/TRST

5 VCC_3.3 (w/10K pullup) 6 VCC_3.3 (w/2K pullup)

7TCK 8NC

9TMS 10NC

11 /SRESET* 12 NC

13 /HRESET 14 NC

15 VCC_3.3 (w/10K pullup) 16 GND

* The 8245 does not support /SRESET when the expanded ROM (high-density

Flash) is enabled. Ensure that this pin is not asserted when expanded ROM is

enabled.