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AR# 1925

XC5200 - XACT 5.2.1: An error reports "xnfprep: Error 4708..."

説明

Keywords: 3-state, tri-state, tristate, BUFE, BUFT, XC5200

Urgency: Standard

General Description:
The following error is reported:

"Xnfprep: Error 4708: There are 23 Tbufs driving the signal.
The part 5200, only has 22 drivers available."

ソリューション

The number of TBUFs that can be tied together is equal to the number of CLB columns in the used device.

For example, the XC5202 has 8 columns; therefore, only 8 3-state buffers may be tied together.
AR# 1925
作成日 08/31/2007
最終更新日 01/12/2003
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