DM9101
10/100Mbps Ethernet Physical Layer Single Chip Transceiver
PHY Identifier Register #2 (PHYIDR2) - Register 3
Bit
3.15-3.10
Bit Name
OUI_LSB
Default
<101110>,RO/P
Description
OUI Least Significant Bits:
Bits 19 - 24 of the OUI (00606E) are mapped to bits 15 - 10 of
this register respectively
Vendor Model Number:
Six bits of the vendor model number mapped to bits 9 - 4 (most
significant bit to bit 9)
3.9-3.4
3.3-3.0
VNDR_MDL
MDL_REV
<000000>,RO/P
<0010>,RO/P
Model Revision Number:
Four bits of the vendor model revision number mapped to bits 3
- 0 (most significant bit to bit 3)
Auto-negotiation Advertisement Register (ANAR) - Register 4
This register contains the advertised abilities of the DM9101 device as they will be transmitted to link partners during Auto-
negotiation.
Bit
Bit Name
Default
Description
Next Page Indication:
0=No next page available
1=Next page available
4.15
NP
0,RO/P
The DM9101 does not support the next page function. This bit
is permanently set to 0
Acknowledge:
4.14
ACK
0,RO
1=Link partner ability data reception acknowledged
0=Not acknowledged
The DM9101's Auto-negotiation state machine will
automatically control this bit in the outgoing FLP bursts and set
it at the appropriate time during the Auto-negotiation process.
Software should not attempt to write to this bit.
Remote Fault:
4.13
RF
0, RW
1=Local Device senses a fault condition
0=No fault detected
Reserved:
Write as 0, ignore on read
Flow Control Support:
4.12-4.11
4.10
Reserved
FCS
X, RW
0, RW
1=Controller chip supports flow control ability
0=Controller chip doesn’t support flow control ability
100Base-T4 Support:
4.9
T4
0, RO/P
1=100Base-T4 supported by the local device
0=100Base-T4 not supported
The DM9101 does not support 100Base-T4 so this bit is
permanently set to 0
100Base-TX Full Duplex Support:
1=100Base-TX Full Duplex supported by the local device
0=100Base-TX Full Duplex not supported
100Base-TX Support:
4.8
4.7
TX_FDX
TX_HDX
1, RW
1, RW
1=100Base-TX supported by the local device
0=100Base-TX not supported
24
Final
Version: DM9101-DS-F03
July 22, 1999
ETC [ ETC ]
