User guide

Chapter 9: Transceiver Reconfiguration Controller 9–3

Steps to Achieve PMA Controls Reconfiguration

December 2010 Altera Corporation Altera Transceiver PHY IP Core User Guide

Steps to Achieve PMA Controls Reconfiguration

You can use the Avalon-MM interface to change settings for the TX and RX channels.

Complete the following steps to reconfigure a setting:

1. Write the channel to be configured to the

logical

channel

address

2. Set the

tx_rx_word_offset

, indicating which PMA analog control is to be

changed.

3. Write the reconfiguration data to the

reconfig_data

4. Set the

read

write

bit to 1.

5. Read the

busy

bit until it is deasserted, indicating that the operation has

completed.

0x10C

[15:0] RW

reconfig_data

Reconfiguration data.

[31:16] — Reserved —

0x110

eye_monitor

For complete information about the EyeQ interface and

registers refer to, “EyeQ Interface Register Mapping” in

the Stratix IV Dynamic Reconfiguration chapter in

volume 2 of the Stratix IV Device Handbook.

Table 9–1. Dynamic Reconfiguration Control and Status Registers (Part 2 of 2)

Offset Bits R/W Register Name Description