Register 4: SGMII Auto-Negotiation Advertisement - 3.5 English

Quad Serial Gigabit Media Independent LogiCORE Product Guide (PG029)

Document ID
PG029
Release Date
2023-11-02
Version
3.5 English

MAC Mode Of Operation

Figure 2-17: MDIO Register 4: SGMII Auto-Negotiation Advertisement

X-Ref Target - Figure 2-17

SGMII_AN_ADV_REG4.jpg
Table 2-18: SGMII Auto-Negotiation Advertisement (Register 4)

Bits

Name

Description

Attributes

Default Value

4.15:0

All bits

SGMII defined value sent from the MAC to the PHY.

read only

0100000000000001

PHY Mode Of Operation

Figure 2-18: MDIO Register 4: SGMII Auto-Negotiation Advertisement

X-Ref Target - Figure 2-18

SGMII_AN_ADV_REG4_chx.jpg
Table 2-19: SGMII Auto-Negotiation Advertisement in PHY Mode (Register 4)

Bits

Name

Description

Attributes

Default Value

4.15

PHY Link Status

This refers to the link status of the PHY with its link partner across the Medium.

1 = Link Up

0 = Link Down

read/write

0

4.14

Acknowledge

Used by Auto-Negotiation function to indicate reception of a link partner base or next page.

read/write

0

4.13

Reserved

Always returns 0, writes ignored

returns 0

0

4.12

Duplex Mode

1= Full Duplex

0 = Half Duplex

read/write

0

4.11:10

Speed

11 = Reserved

10 = 1 Gbps

01 = 100 Mbps

00 = 10 Mbps

read/write

00

4.9:1

Reserved

Always return 0s

returns 0s

000000000

4.0

Reserved

Always returns 1

returns 1

1