Answers Database


Virtex JTAG - XAPP139 has a misprint on shutdown sequence for AGHIGH command


Record #8149

Product Family: Hardware

Product Line: Virtex

Product Part: Virtex General Hardware

Problem Title:
Virtex JTAG - XAPP139 has a misprint on shutdown sequence for AGHIGH command


Problem Description:
Urgency: HOT

Problem Description:

XAPP139 has a misprint on shutdown sequence. The value of the AGHIGH
command is incorrect. This is step 7 on page 10 of XAPP139


Solution 1:

Page10 of the XAPP139 application note
( http://support.xilinx.com/xapp/xapp139.pdf ) has a typo in the
shutdown sequence.

What we have in the app. note is this:

0011 0000 0000 0000 1000 0000 0000 0001
     -> Header: Write to CMD
0000 0000 0000 0000 0000 0000 0000 0100
     -> AGHIGH command asserts GHIGH

The AGHIGH command is actually 1000, not 0100.
So the second 32-bit word should be:

0000 0000 0000 0000 0000 0000 0000 1000




End of Record #8149 - Last Modified: 11/24/99 16:33

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