bdi
SCI
JTAG debug interface for SeeCode™ Debugger, BDI2000 (PPC744x/745x)
User Manual 5
© Copyright 1999-2003 by ABATRON AG
V 1.00
BDI TARGET B Connector Signals:
Pin
Name
Describtion
1
TDO
JTAG Test Data Out
This input to the BDI2000 connects to the target TDO pin.
2
IO0
General purpose I/O
This output of the BDI2000 connects to the target QACK pin. Currently not used.
3
TDI
JTAG Test Data In
This output of the BDI2000 connects to the target TDI pin.
4
TRST
JTAG Test Reset
This output of the BDI2000 resets the JTAG TAP controller on the target.
5
IN0
General purpose Input
This input to the BDI2000 connects to the target HALTED pin. Currently not used.
6
Vcc Target
1.8 – 5.0V:
This is the target reference voltage. It indicates that the target has power and it is also used
to create the logic-level reference for the input comparators. It also controls the output logic
levels to the target. It is normally fed from Vdd I/O on the target board.
3.0 – 5.0V with Rev. B :
This input to the BDI2000 is used to detect if the target is powered up. If there is a current
limiting resistor between this pin and the target Vdd, it should be 100 Ohm or less.
7
TCK
JTAG Test Clock
This output of the BDI2000 connects to the target TCK pin.
8
<reseved>
9
TMS
JTAG Test Mode Select
This output of the BDI2000 connects to the target TMS line.
10
<reseved>
11
SRESET
Soft-Reset
This open collector output of the BDI2000 connects to the target SRESET pin.
12
GROUND
System Ground
13
HRESET
Hard-Reset
This open collector output of the BDI2000 connects to the target HRESET pin.
14
<reseved>
15
IN1
General purpose Input
This input to the BDI2000 connects to the target CKSTP_OUT pin. Currently not used.
16
GROUND
System Ground
