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AR# 15633

Virtex-II/Virtex-II Pro LVDS - Is on-chip termination available?

Description

Is on-chip termination available for Virtex-II and Virtex-II Pro LVDS inputs?

Solution

Virtex-II and Virtex-II Pro offer unique solutions as follows:

Virtex-II

Internal LVDS termination can be implemented with DCI (digitally controlled impedance).

The DCI LVDS solution is available beginning with 5.1i Service Pack 1 available at:

http://www.xilinx.com/support/download/index.htm

NOTES:

1. You must use DCI LVDS with a VCCO of 2.5V. A 3.3V termination causes signal behavior to deviate from LVDS standard specifications.

2. DCI LVDS termination has a power cost of 62.5 mW per termination (i.e., per input pair).

Virtex-II Pro

Please see (Xilinx Answer 17244).

IBIS models are available at:

http://www.xilinx.com/support/mysupport.htm

SPICE models are available at:

http://www.xilinx.com/support/mysupport.htm

AR# 15633
Date Created 09/03/2007
Last Updated 12/15/2012
Status Active
Type General Article