Abatron BDI3000 Benutzerhandbuch - Seite 5

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Access

bdi

JTAG interface library, BDI3000 (XScale)

BDI TARGET A Connector Signals

Name

reserved

TRST

3+5

GND

TCK

TMS

RESET

TDI

Vcc Target

TDO

Note:

The BDI actively drives TRST. It does not require any special power-up circuitry. Simply, the require-

ment is that TRST is weakly pulled down at the processor. It is suggested that the value of the pull-

down resistor is 10k or greater.

This pin is currently not used.

JTAG Test Reset

This output of the BDI3000 resets the JTAG TAP controller on the target.

System Ground

JTAG Test Clock

This output of the BDI3000 connects to the target TCK line.

JTAG Test Mode Select

This output of the BDI3000 connects to the target TMS line.

This open collector output of the BDI3000 is used to reset the target system.

JTAG Test Data In

This output of the BDI3000 connects to the target TDI line.

1.2– 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 connected to Vdd I/O on the target board.

JTAG Test Data Out

This input to the BDI3000 connects to the target TDO line.

Installation Manual

Describtion

V 1.00