Register 1: Status Register - 16.2 English

1G/2.5G Ethernet PCS/PMA or SGMII LogiCORE IP Product Guide (PG047)
Document ID
PG047
Release Date
2023-11-01
Version
16.2 English
Figure 1. MDIO Register 1: Status Register Ethernet 1000BASE-X PCS/PMA or SGMII Page-1 Sheet.1 Sheet.2 Sheet.3 Sheet.4 Sheet.5 Sheet.6 Sheet.7 Sheet.8 Sheet.9 Sheet.10 100BASE-T4 100BASE-T4 Sheet.11 100BASE-X FULL DUPLEX 100BASE-X FULL DUPLEX Sheet.12 10Mb/s FULL DUPLEX 10Mb/s FULL DUPLEX Sheet.13 100BASE-T2 HALF DUPLEX 100BASE-T2 HALF DUPLEX Sheet.14 LINK STATUS LINK STATUS Sheet.15 10Mb/s HALF DUPLEX 10Mb/s HALF DUPLEX Sheet.16 100BASE-X HALF DUPLEX 100BASE-X HALF DUPLEX Sheet.17 MF PREAMBLE SUPPRESSION MF PREAMBLE SUPPRESSION Sheet.18 15 15 Sheet.19 14 14 Sheet.20 13 13 Sheet.21 12 12 Sheet.22 11 11 Sheet.23 10 10 Sheet.24 7 7 Sheet.25 6 6 Sheet.26 5 5 Sheet.27 0 0 Sheet.28 Reg 1 Reg 1 Sheet.29 Sheet.30 100BASE-T2 FULL DUPLEX 100BASE-T2 FULL DUPLEX Sheet.31 Sheet.32 9 9 Sheet.33 Sheet.34 8 8 Sheet.35 EXTENDED STATUS EXTENDED STATUS Sheet.36 UNIDIRECTIONAL ANILITY UNIDIRECTIONAL ANILITY Sheet.37 Sheet.38 4 4 Sheet.39 AUTO-NEG COMPLETE AUTO-NEG COMPLETE Sheet.40 Sheet.41 Sheet.42 Sheet.43 Sheet.44 3 3 Sheet.45 2 2 Sheet.46 1 1 Sheet.47 REMOTE FAULT REMOTE FAULT Sheet.48 AUTO-NEG ABILITY AUTO-NEG ABILITY Sheet.49 JABBER DETECT JABBER DETECT Sheet.50 EXTENDED CAPABILITY EXTENDED CAPABILITY Sheet.51 X12802 X12802
Table 1. Register 1 – Status Register
Bits Name Description Attributes Default Value
1.15 100BASE-T4 Always returns a 0 because 100BASE-T4 is not supported. Returns 0 0
1.14 100BASE-X Full Duplex Always returns because 0 as 100BASE-X full duplex is not supported. Returns 0 0
1.13 100BASE-X Half Duplex Always returns a 0 because 100BASE-X half duplex is not supported. Returns 0 0
1.12 10 Mbps Full Duplex Always returns a 0 because 10 Mbps full duplex is not supported. Returns 0 0
1.11 10 Mbps Half Duplex Always returns a 0 because 10 Mbps half duplex is not supported Returns 0 0
1.10 100BASE-T2 Full Duplex Always returns a 0 because 100BASE-T2 full duplex is not supported. Returns 0 0
1.9 100BASE-T2 Half Duplex Always returns a 0 because 100BASE-T2 Half Duplex is not supported. Returns 0 0
1.8 Extended Status Always returns a 1 to indicate the presence of the Extended register (Register 15). Returns 1 1
1.7 Unidirectional Ability Always returns a 1, writes ignored Returns 1 1
1.6 MF Preamble Suppression Always returns a 1 to indicate that Management Frame Preamble Suppression is supported. Returns 1 1
1.5 Auto- Negotiation Complete

Using optional auto-negotiation:

1 = Auto-Negotiation process completed

0 = Auto-Negotiation process not completed

Without optional auto-negotiation:

Ignore this bit.

 RO 0
1.4 Remote Fault

Using optional auto-negotiation:

1 = Remote fault condition detected

0 = No remote fault condition detected

Without optional auto-negotiation:

Always returns a 0.

RO

Self clearing on read

 0
1.3 Auto- Negotiation Ability

Using optional auto-negotiation:

Always returns a 1 for this bit to indicate that the PHY is capable of Auto-Negotiation.

Without optional auto-negotiation:

Ignore this bit.

 Returns 1 1
1.2 Link Status

1 = Link is up

0 = Link is down (or has been down)

Latches 0 if Link Status goes down. Clears to current Link Status on read.

See Link Status for further details.

 RO 0
1.1 Jabber Detect Always returns a 0 for this bit because Jabber Detect is not supported. Returns 0 0
1.0 Extended Capability Always returns a 0 for this bit because no extended register set is supported. Returns 0 0