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AR# 13451

4.2i PAR - Gigabit I/O pin placement can affect minimum clock period

描述

Keywords: INFINIBAND, XAUI, GT, channel bond, Virtex-IIPro, Virtex-II Pro

In timing-critical standards INFINIBAND and XAUI, the placement of the GT Channel Bonding connects is critical. If the CHBONDO-to-CHBONDI connection is not properly made, timing will not be met for these standards.

解决方案

If the GT pins are placed on the same edge of the device, PAR can optimize the CHBONDO-to-CHBONDI connection for speed.

NOTE: This Answer Record applies to timing-driven routing only.
AR# 13451
日期 10/20/2008
状态 Archive
Type 综合文章
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