LAN83C185 Datasheet, PDF (35/61 Pages) SMSC Corporation – HIGH PERFORMANCE SINGLE CHIP LOW POWER 10/100 ETHERNET PHYSICAL LAYER TRANSCEIVER

High Performance Single Chip Low Power 10/100 Ethernet Physical Layer Transceiver (PHY)
Datasheet
Table 5.34 Register 0 - Basic Control
ADDRESS
NAME
0.15
Reset
0.14
Loopback
0.13
Speed Select
0.12
Auto-
Negotiation
Enable
0.11
Power Down
0.10
Isolate
0.9
Restart Auto-
Negotiate
0.8
Duplex Mode
0.7
0.6:0
Collision Test
Reserved
DESCRIPTION
MODE DEFAULT
1 = software reset. Bit is self-clearing. For best results, RW/
when setting this bit do not set other bits in this
SC
register.
1 = loopback mode,
RW
0 = normal operation
1 = 100Mbps,
RW
0 = 10Mbps.
Ignored if Auto Negotiation is enabled (0.12 = 1).
1 = enable auto-negotiate process
RW
(overrides 0.13 and 0.8)
0 = disable auto-negotiate process
1 = General power down mode,
RW
0 = normal operation
1 = electrical isolation of PHY from MII
RW
0 = normal operation
1 = restart auto-negotiate process
RW/
0 = normal operation. Bit is self-clearing.
SC
1 = Full duplex,
RW
0 = Half duplex.
Ignored if Auto Negotiation is enabled (0.12 = 1).
1 = enable COL test,
RW
0 = disable COL test
RO
0
0
Set by
MODE[2:0]
bus
Set by
MODE[2:0]
bus
0
Set by
MODE[2:0]
bus
0
Set by
MODE[2:0]
bus
0
0
Table 5.35 Register 1 - Basic Status
ADDRESS
NAME
DESCRIPTION
1.15
1.14
1.13
1.12
1.11
1.10:6
1.5
1.4
100Base-T4
100Base-TX Full
Duplex
100Base-TX Half
Duplex
10Base-T Full
Duplex
10Base-T Half
Duplex
Reserved
Auto-Negotiate
Complete
Remote Fault
1 = T4 able,
0 = no T4 ability
1 = TX with full duplex,
0 = no TX full duplex ability
1 = TX with half duplex,
0 = no TX half duplex ability
1 = 10Mbps with full duplex
0 = no 10Mbps with full duplex ability
1 = 10Mbps with half duplex
0 = no 10Mbps with half duplex ability
1 = auto-negotiate process completed
0 = auto-negotiate process not completed
1 = remote fault condition detected
0 = no remote fault
SMSC LAN83C185
35
DATASHEET
MODE DEFAULT
RO
0
RO
1
RO
1
RO
1
RO
1
RO
0
RO/
0
LH
Rev. 0.8 (11-16-04)