Albatron Technology ARM11/Cortex-A8 BDI TARGET B Connector Signals:

bdi GDB
for GNU Debugger, BDI2000 (ARM11/Cortex-A8) User Manual 10
© Copyright 1997-2007 by ABATRON AG Switzerland V 1.04
BDI TARGET B Connector Signals:
Pin Name Describtion
1 TDO JTAG Test Data Out
This input to the BDI2000 connects to the target TDO line.
2 reserved
3 TDI JTAG Test Data In
This output of the BDI2000 connects to the target TDI line.
4 reserved
5RTCK Returned JTAG Test Clock
This input to the BDI2000 connects to the target RTCK line.
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. 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.
7 TCK JTAG Test Clock
This output of the BDI2000 connects to the target TCK line.
8 TRST JTAG Test Reset
This open-drain / push-pull output of the BDI2000 resets the JTAG TAP controller on the
target. Default driver type is open-drain.
9 TMS JTAG Test Mode Select
This output of the BDI2000 connects to the target TMS line.
10 reserved
11 reserved
12 GROUND System Ground
13 RESET System Reset
This open-drain output of the BDI2000 is used to reset the target system.
14 reseved
15 reseved
16 GROUND System Ground