PPC7A Product Manual
Connectors
5-19
1
st
Edition
P8 Signal Descriptions
S
IGNAL
D
ESCRIPTION
TDO_CPU
Processor JTAG Test Data Out
EMU~
When connected to GND, creates QACK~ to the processor. This connection should be made with an emulator
TDI_CPU
Processor JTAG Test Data In
TRST~
Processor JTAG Test Reset
+3.3V PULL-UP
Power-on status signal to RISCWatch hardware
TCK
Processor JTAG Test Clock
TMS
Processor JTAG Test Mode Select
SRESET_CPU~
Processor Soft Reset
GND
Signal ground
HRESET_CPU~
Processor Hard Reset
CHECKKSTOP~
Processor Checkstop output
GND
Signal ground
For more information on JTAG, see Chapter 8.
EST Emulator Connection
P
IN
N
O
.
S
IGNAL
D
ESCRIPTION
1
TDO_CPU
Processor JTAG Test Data Out
2
QACK_IN~
Quiescent grant to Processor
3
TDI_CPU
Processor JTAG Test Data In
4
TRST~
Processor JTAG Test Reset
5
QREQ~
Processor Quiescent request
6
+3.3V pull-up
Power-on status signal to EST hardware
7
TCK
Processor JTAG Test Clock
9
TMS
Processor JTAG Test Mode Select
11
SRESET_CPU~
Processor Soft Reset
12
GND
Signal ground
13
HRESET_CPU~
Processor Hard Reset
15
CHECKKSTOP~
Processor Checkstop output
16
GND
Signal ground
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