VSC8504-02 datasheet(59/131 Pages) MICROSEMI

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Registers

VMDS-10507 VSC8504-02 Datasheet Revision 4.2

4.2.5

Link Partner Autonegotiation Capability

The bits in main register 5 can be used to determine if the Cat5 link partner (LP) used with the

VSC8504-02 is compatible with the autonegotiation functionality.

4.2.6

Autonegotiation Expansion

The bits in main register 6 work together with those in register 5 to indicate the status of the LP

autonegotiation functioning. The following table shows the available settings and readouts.

Advertise100BASE-TX HDX

R/W

1: Advertises 100BASE-TX HDX 1

Advertise10BASE-T FDX

R/W

1: Advertises 10BASE-T FDX

Advertise10BASE-T HDX

R/W

1: Advertises 10BASE-T HDX

4:0 Advertise selector

R/W

00001

Table 23 •

Autonegotiation Link Partner Ability, Address 5 (0x05)

Bit Name

Access Description

Default

LP next page transmission request RO

1: Requested

LP acknowledge

1: Acknowledge

LP remote fault

1: Remote fault

Reserved

LP advertise asymmetric pause

1: Capable of asymmetric pause

LP advertise symmetric pause

1: Capable of symmetric pause

LP advertise 100BASE-T4

1: Capable of 100BASE-T4

LP advertise 100BASE-TX FDX

1: Capable of 100BASE-TX FDX 0

LP advertise 100BASE-TX HDX

1: Capable of 100BASE-TX HDX 0

LP advertise 10BASE-T FDX

1: Capable of 10BASE-T FDX

LP advertise 10BASE-T HDX

1: Capable of 10BASE-T HDX

4:0 LP advertise selector

00000

Table 24 •

Autonegotiation Expansion, Address 6 (0x06)

Bit

Name

Access Description

Default

15:5 Reserved

Reserved.

All zeros

Parallel detection fault

This bit latches high.

1: Parallel detection fault.

LP next page capable

1: LP is next page capable.

Local PHY next page capable RO

1: Local PHY is next page capable.1

Page received

This bit latches low.

1: New page is received.

LP is autonegotiation capable RO

1: LP is capable of autonegotiation.

Table 22 •

Device Autonegotiation Advertisement, Address 4 (0x04) (continued)

Bit Name

Access Description

Default

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