Altera Stratix GX Transceiver User Manual

Page 42

2–24

Altera Corporation

Stratix GX Transceiver User Guide

January 2005

MegaWizard Analog Features

Figure 2–16. MegaWizard Plug-In Manager - ALTGXB (Page 4 of 7) - Receiver (2)

Notes (1)

–

(3)

Notes to

Figure 2–16

(1)

Stratix GX to Stratix GX DC coupling only. Lets the receiver accept a 1.5-V PCML signal from a Stratix GX
transmitter buffer.

(2)

The Use equalizer control signal option enables dynamic equalization via the optional rx_equalizerctrl input
port. If this control signal is not used, you can set equalization in the MegaWizard Plug-In Manager via the Select
the equalizer control setting

. The valid values are 0 through 4, with 0 being off and 4 being the largest gain setting.

(3)

Available settings are High, Medium, and Low. High bandwidth allows for faster lock times and tracks higher
frequency jitter (based on the -3 db frequency of the PLL gain plot) on the input clock. Low bandwidth contains a
smaller pass band to filter out more high-frequency jitter, but has slower lock times.