Answers Database

XC9500: How to program mulitple devices in a single chain using the HP3070 tester?


Record #3255

Product Family:  Hardware

Product Line:  9500

Problem Title:
XC9500: How to program mulitple devices in a single chain using the
HP3070 tester?



Problem Description:
Keywords: hp, 3070, tester, svf, single, chain, multiple, eztag, svf2vcl, vcl, p
cf

Urgency: Standard

General Description:

The currently available software for the HP3070 Tester does not support mulitple
 devices in
a single chain. Use the following procedure as a work-around


Solution 1:

Add connections from the TDO pin on each device to a tester pin.  Regenerate the
 SVF
files for each part as follows:

For Example, if you have 3 devices in the chain, let's call them A, B and C. Let
's say that A is
closest to the system TDI pin and C closest to the system TDO pin.

1. Generate the SVF file for C specifying a boundary-scan chain of 3 devices: A,
 B and C,
2. Generate the SVF file for B specifying a boundary-scan chain of 2 devices: A
and B
3. Generate the SVF file for A specifying a boundary-scan chain of 1 devices: A

You should  NOT concatenate the SVF files together because the TDO sense pin wil
l be
different for each SVF file.

4. Run each SVF file through the translator to generate the associate VCL/PCF fi
les.	

5. Take these VCL/PCF files and compile them into an HP executable.
Run each executable under control of your testplan file as you would any normal
test
operation.



End of Record #3255