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AR# 21504

7.1i iMPACT - I receive "ERROR iMPACT 477 - The bsdl for the device 'UNKNOWN' is out of date" when trying to initialize the JTAG chain in iMPACT

描述

Keywords check, installation, cable, usb, platform

Urgency: Standard

General Description:
I receive "ERROR iMPACT 477 - The bsdl for the device 'UNKNOWN' is out of date" when trying to initialize the JTAG chain in iMPACT.

解决方案

This issue is usually the result of hardware setup issue. Try slowing down the cable speed to see if the problem is resolved. If so, this is likely an SI related issue.

If the JTAG chain contains Virtex-II Pro devices, ensure TDO's integrity. Virtex-II PRO has open-drain TDO, and a 200 Ohm or stronger external pull-up on the pin is recommended in addition to IBIS simulation.
AR# 21504
日期 05/23/2005
状态 Active
Type ??????
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