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AC101
Preliminary Data Sheet
06/04/01
B r o a d c o m
Page 26
MII-Specified Registers
Document AC101-DS01-405-R¥¥¥¥¥
R
EGISTER
2: PHY I
DENTIFIER
1 R
EGISTER
R
EGISTER
3: PHY I
DENTIFIER
2 R
EGISTER
R
EGISTER
4: A
UTO
-N
EGOTIATION
A
DVERTISEMENT
R
EGISTER
The ANeg Complete bit of Register 1: Status Register (see ”Register 1: Status Register” on page 25) must be set for this
register to be valid.
1.0
Extended Ca-
pability
1 = Extended register capable. This bit is tied permanently to
one.
RO
1
Table 16:
Register 2: PHY Identifier 1 Register
Reg.bit
Name
Description
Mode
Default
2.[15:0]
OUI
a
a. Based on an OUI of 0010A9 (Hex).
Composed of the 3rd through 18th bits of the Organizationally
Unique Identifier (OUI), respectively.
RO
0022(H)
Table 17:
Register 3: PHY Identifier 2 Register
Reg.bit
Name
Description
Mode
Default
3.[15:10]
OUI
a
a. Based on an OUI of 0010A9 (Hex).
Assigned to the 19th through 24th bits of the OUI.
RO
010101
3.[9:4]
Model Number
Six bit manufacturer’s model number. 101 is encoded as
100001.
RO
100001
3.[3:0]
Revision Num-
ber
Four-bit manufacturer’s revision number. 0011 stands for Rev.
C, etc.
RO
1011
Table 18:
Register 4: Auto-Negotiation Advertisement Register
Reg.bit
Name
Description
Mode
Default
4.15
Next Page
• 1 = Next Page enabled.
• 0 = Next Page disabled.
RW
0
4.14
Acknowledge
This bit will be set internally after receiving 3 consecutive and
consistent FLP bursts.
RO
0
4.13
Remote Fault
• 1 = Advertises that this device has detected a Remote Fault.
• 0 = No remote fault detected.
RW
0
4.[12:10]
Reserved
For future technology.
RW
000
4.9
100BASE-T4
Technology not supported. This bit always 0
RO
0
Table 15:
Register 1: Status Register (Cont.)
Reg.bit
Name
Description
Mode
Default