Rx Polarity Control; Overview; Ports And Attributes; Description - Xilinx Virtex-5 RocketIO GTP User Manual

Chapter 7: GTP Receiver (RX)

RX Polarity Control

Overview

The GTP receiver can invert incoming data using the RX polarity control function. This
function is useful in designs where the RXP and RXN signals can be accidentally connected
in reverse. The RXPOLARITY port is driven High to invert the polarity of incoming data.

Ports and Attributes

Table 7-17
Table 7-17: RX Polarity Ports
There are no attributes in this section.

Description

The RX Polarity port is used to invert the polarity of incoming data. Driving this port High
causes the RXN pin to be treated as RXP and the RXP pin to be treated as RXN.
146
defines the RX polarity ports.
Port Dir Clock Domain
RXPOLARITY0
In
RXPOLARITY1
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The RX Polarity port is used to invert the polarity
of incoming data.
RXUSRCLK2
1: Invert polarity
0: Regular polarity
Virtex-5 RocketIO GTP Transceiver User Guide
Description
UG196 (v1.3) May 25, 2007
R