43
Address
Bit
Type
Bit Name
Default value
Description
8
R
Extended Status
Fixed 0
No extended status information in
register 15.
7
R
Reserved
Fixed 0
6
R
MF Preamble Suppression
Fixed 0
PHY does not allow preamble to be
suppressed in management frames.
5
R
Auto-Negotiation Complete
Fixed 0
Not supported.
4
R
Remote Fault
Fixed 0
Not supported.
3
R
Auto-Negotiation Ability
Fixed 0
Cannot auto-negotiate.
2
R
Link Status
0
Reflects the SONET status. When
SONET is up, this bit is set.
1
R
Jabber Detect
Fixed 0
0
R
Extended Capability
Fixed 1
Registers 2-10 supported.
2
15-0
R
PHY Identifier
Fixed 00C3h
Bits 3 to 18 of the IEEE assigned
Organizationally Unique Identifier.
3
15-10 R
PHY Identifier
Fixed 010011
Bits 19 to 24 of the IEEE assigned
Organizationally Unique Identifier.
9-4
Fixed 000010
Manufacturer’s Model Number.
3-0
Fixed 0000
Revision Number.
4-10
15-0
R
Extended Capabilities
Not supported.
11-14
15-0
R
Reserved Unused.
Unused.
15
15-0
R
Extended Status
Not supported.
16
15-9
R
Unused
Fixed 0
8-0
R/W
Indirect Address
0
Address of the internal chip register to
be written to or read from.
17
15-8
R
Unused Fixed
0
The internal chip register bus is 8 bits
wide so these bits are always 0.
7-0
R/W
Data
0
Data read from or written to an internal
chip register.
18
15-8
R
Unused
Fixed 0
7-0
R
Master Alarm
0
This is a shadow of the master alarm
chip register.
19-31
15-0
R
Vendor Specific
Read/ Write
Unused
Read/ Write
transactions
ignored, MDIO
in Hi-Z
Read/ Write
transactions
ignored, MDIO
in Hi-Z