E-Tile Transceiver PHY User Guide

ID 683723
Date 9/30/2022
Public
Document Table of Contents

3.1.10.5. Reconfiguring from Channel Protection Mode to Mission Mode

To reconfigure a channel from channel protection mode back to mission mode, from mission mode settings, save the values in channel addresses 0x05, 0x07, and 0x38 (see Reconfiguring from Mission Mode to Channel Protection Mode for the steps) before entering channel protection mode.

Table 49.  Steps to Configure
Step Step Type PMA Attribute Code PMA Attribute Data Transceiver Register Address Transceiver Register Data Comments
Disable the PMA. PMA Attribute 0x0001 0x0000 Disables the PMA so that it can be reconfigured
Perform a PMA analog reset. IP Configuration Settings 0x203:0x200 0x81000000 Status is returned in register 0x207
Change the TX and RX channel PMA attributes back. PMA Attribute 0x0002 0x03FF Disables internal PRBS
Change the TX and RX channel PMA attributes back. PMA Attribute 0x0008 0x0100 Exits internal serial loopback mode
Restore mission mode values. Avalon® memory-mapped interface register Read-Modify-Write 0x91 1'b1 Reloads PMA settings by calling the PMA attribute sequencer
Restore register values. Restore registers 0x38, 0x05, and 0x07
Restore the channels to re-enable the PMA. PMA Attribute 0x0001 0x0003 Enables TX and RX and disables the output driver
Perform initial adaptation.

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