LAN91C111 Datasheet, PDF (87/142 Pages) SMSC Corporation – 10/100 Non-PCI Ethernet Single Chip MAC + PHY

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
2
3
3
3
BITS
15-0
15-10
9-4
3-0
NAME
Company ID
Company ID
Manufacturer's ID
Manufacturer's Revision #
DEFAULT VALUE
0000000000010110
111110
000100
----
R/W
SOFT RESET
R
Retains Original Value
R
Retains Original Value
R
Retains Original Value
R
Retains Original Value
9.4
Register 4. Auto-Negotiation Advertisement Register
NP
ACK
RW
R
0
0
RF
Reserved Reserved Reserved
T4
TX_FDX
RW
RW
RW
RW
RW
RW
0
0
0
0
0
1
TX_HDX
RW
1
10_FDX
RW
1
10_HDX
RW
1
Reserved Reserved
RW
RW
0
0
Reserved
RW
0
Reserved
RW
0
CSMA
RW
1
This register control the values transmitted by the PHY to the remote partner when advertising its
abilities
SMSC LAN91C111-REV B
87
DATASHEET
Revision 1.8 (07-13-05)