Low Latency 100G Ethernet Intel® FPGA IP Core User Guide: For Intel® Stratix® 10 Devices

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ID 683100
Date 2/16/2022
Public
Document Table of Contents

7.8.16. Link Training Config Register 2

Provides CSRs for the following link training features:
  • Restart Link Training on Lane 0
  • Restart Link Training on Lane 1
  • Restart Link Training on Lane 2
  • Restart Link Training on Lane 3
  • Updated Link Partner TX EQ Override Settings ready to be sent for Lane 0
  • Updated Link Partner TX EQ Override Settings ready to be sent for Lane 1
  • Updated Link Partner TX EQ Override Settings ready to be sent for Lane 2
  • Updated Link Partner TX EQ Override Settings ready to be sent for Lane 3
  • Updated Local TX EQ Override Settings ready to be sent for Lane 0
  • Updated Local TX EQ Override Settings ready to be sent for Lane 1
  • Updated Local TX EQ Override Settings ready to be sent for Lane 2
  • Updated Local TX EQ Override Settings ready to be sent for Lane 3

Offset: 0xD1

Access: RW

Link Training Config Register 2 Fields

Bit Name Description Access Reset
11 updated_local_coef_ln3 Updated Local TX EQ Override Settings ready to be set for Lane 3

1: Trigger LT logic to set new Local TX EQ Override settings for Lane 3

0: Normal operation

Valid only when ovride_local_coef_enable=1.

Takes values from corresponding TX EQ Override CSR.

RW 0x0
10 updated_local_coef_ln2 Updated Local TX EQ Override Settings ready to be set for Lane 2

1: Trigger LT logic to set new Local TX EQ Override settings for Lane 2

0: Normal operation

Valid only when ovride_local_coef_enable=1.

Takes values from corresponding TX EQ Override CSR

RW 0x0
9 updated_local_coef_ln1 Updated Local TX EQ Override Settings ready to be set for Lane 1

1: Trigger LT logic to set new Local TX EQ Override settings for Lane 1

0: Normal operation

Valid only when ovride_local_coef_enable=1.

Takes values from corresponding TX EQ Override CSR.

RW 0x0
8 updated_local_coef_ln0 Updated Local TX EQ Override Settings ready to be set for Lane 0

1: Trigger LT logic to set new Local TX EQ Override settings for Lane 0

0: Normal operation

Valid only when ovride_local_coef_enable=1

Takes values from corresponding TX EQ Override CSR

RW 0x0
7 updated_lp_coef_ln3 Updated Link Partner TX EQ Override Settings ready to be sent for Lane 3

1: Trigger LT logic to transmit new TX EQ Override settings for Link Partner Lane 3

0: Normal operation

Valid only when ovride_lp_coef_enable=1

Takes values from corresponding TX EQ Override CSR.

RW 0x0
6 updated_lp_coef_ln2 Updated Link Partner TX EQ Override Settings ready to be sent for Lane 2

1: Trigger LT logic to transmit new TX EQ Override settings for Link Partner Lane 2

0: Normal operation

Valid only when ovride_lp_coef_enable=1.

Takes values from corresponding TX EQ Override CSR.

RW 0x0
5 updated_lp_coef_ln1 Updated Link Partner TX EQ Override Settings ready to be sent for Lane 1

1: Trigger LT logic to transmit new TX EQ Override settings for Link Partner Lane 1

0: Normal operation

Valid only when ovride_lp_coef_enable=1

Takes values from corresponding TX EQ Override CSR.

RW 0x0
4 updated_lp_coef_ln0 Updated Link Partner TX EQ Override Settings ready to be sent for Lane 0

1: Trigger LT logic to transmit new TX EQ Override settings for Link Partner Lane 0

0: Normal operation

Valid only when ovride_lp_coef_enable=1.

Takes values from corresponding TX EQ Override CSR.

RW 0x0
3 restart_link_training_ln3 Restart Link Training on lane 3

1: Restart Clause 93 start-up protocol

0: Normal operation

  • Corresponds to state variable mr_restart_training as defined in IEEE 802.3 CL 72.6.10.3.1
RW 0x0
2 restart_link_training_ln2 Restart Link Training on lane 2

1: Restart Clause 93 start-up protocol

0: Normal operation

  • Corresponds to state variable mr_restart_training as defined in IEEE 802.3 CL 72.6.10.3.1
RW 0x0
1 restart_link_training_ln1 Restart Link Training on lane 1

1: Restart Clause 93 start-up protocol

0: Normal operation

  • Corresponds to state variable mr_restart_training as defined in IEEE 802.3 CL 72.6.10.3.1
RW 0x0
0 restart_link_training_ln0 Restart Link Training on lane 0

1: Restart Clause 93 start-up protocol

0: Normal operation

  • Corresponds to state variable mr_restart_training as defined in IEEE 802.3 CL 72.6.10.3.1
RW 0x0

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