bdi
Access
JTAG interface library, BDI2000 (MIPS32)
Installation Manual
5
© Copyright 1992-2004 by ABATRON AG
V 1.00
BDI MAIN / TARGET A Connector Signals
Pin
Name
Describtion
1
DINT
EJTAG Debug Interrupt
EJTAG 2.5: This output of the BDI2000 connects to the target DINT line.
RC32300: This output of the BDI2000 connects to the target DebugBoot line.
2
TRST
EJTAG Test Reset
This output of the BDI2000 resets the JTAG TAP controller on the target.
3+5
GND
System Ground
4
TCK
EJTAG Test Clock
This output of the BDI2000 connects to the target TCK line.
6
TMS
EJTAG Test Mode Select
This output of the BDI2000 connects to the target TMS line.
7
RESET
This open collector output of the BDI2000 is used to reset the target system.
8
TDI
EJTAG Test Data In
This output of the BDI2000 connects to the target TDI line.
9
VIO 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. A/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.
10
TDO
EJTAG Test Data Out
This input to the BDI2000 connects to the target TDO line.
