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AR# 1925

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

Description

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."

解决方案

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
日期 01/12/2003
状态 Archive
Type ??????