10/100 Non-PCI Ethernet Single Chip MAC + PHY
Datasheet
REM_FLT- Remote Fault Detect
‘1’ indicates a Remote Fault. Latches the ‘1’ condition and is cleared by reading this register or
resetting the PHY.
CAP_ANEG - AutoNegotiation Capable
Indicates the ability (‘1’) to perform ANEG or not (‘0’).
LINK - Link Status
A ‘1’ indicates a valid Link and a ‘0’ and invalid Link. The ‘0’ condition is latched until this register is
read.
JAB - Jabber Detect
Jabber condition detected when ‘1’ for 10Mbps. ‘1’ latched until this register is read or the PHY is reset.
Always ‘0’ for 100Mbps
EXREG - Extended Capability register
‘1’ Indicates extended registers are implemented
9.3
Register 2&3. PHY Identifier Register
These two registers (offsets 2 and 3) provide a 32-bit value unique to the PHY.
REG
BITS
NAME
DEFAULT VALUE
R/W
SOFT RESET
2
3
3
15-0
15-10
9-4
Company ID
Company ID
0000000000010110
111110
R
R
R
Retains Original Value
Retains Original Value
Retains Original Value
Manufacturer's ID
000100
3
3-0
Manufacturer's Revision #
- - - -
R
Retains Original Value
9.4
Register 4. Auto-Negotiation Advertisement Register
NP
RW
0
ACK
R
RF
RW
0
Reserved
Reserved
Reserved
T4
RW
0
TX_FDX
RW
0
RW
0
RW
0
RW
1
0
TX_HDX
10_FDX
10_HDX
Reserved
Reserved
Reserved
Reserved
CSMA
RW
1
RW
1
RW
1
RW
1
RW
0
RW
0
RW
0
RW
0
This register control the values transmitted by the PHY to the remote partner when advertising its
abilities
SMSC LAN91C111-REV B
Revision 1.8 (07-13-05)
DATA8S7HEET
SMSC [ SMSC CORPORATION ]
