Answers Database

XC5200: 5200 schematic libraries contain 'BUFGP' and 'BUFGS' symbols


Record #1294

Product Family:  Software

Product Line:  FPGA Core

Problem Title:
XC5200:	5200 schematic libraries contain 'BUFGP' and 'BUFGS' symbols


Problem Description:
Keywords: BUFG, BUFGP, BUFGS, 5200, LIBRARY

Urgency: Standard

Description

5200 schematic libraries contain both BUFGP and BUFGS symbols.	However, the 5k
has neither BUFGP's
(primary global buffers) nor BUFGS's (secondary global
buffers) in its architecture.  These types of buffers are
found only in the 4k architecture.  The global buffers in the
5k (and there are 4 of them) are known as BUFG's.




Solution 1:

Avoid using either the BUFGP or the BUFGS symbols in a 5k
design.  Even though the BUFGP and BUFGS symbols in the 5k
schematic library are really just macros of BUFG, to prevent
any confusion between the 4k and 5k architecture, only the
BUFG should be used.



End of Record #1294