Datasheet

High Performance Single Chip Low Power 10/100 Ethernet Physical Layer Transceiver (PHY)
Datasheet
Revision 0.8 (06-12-08) 34 SMSC LAN83C185
DATASHEET
Table 5.34 Register 0 - Basic Control
ADDRESS NAME DESCRIPTION MODE DEFAULT
0.15 Reset 1 = software reset. Bit is self-clearing. For best results,
when setting this bit do not set other bits in this
register.
RW/
SC
0
0.14 Loopback 1 = loopback mode,
0 = normal operation
RW 0
0.13 Speed Select 1 = 100Mbps,
0 = 10Mbps.
Ignored if Auto Negotiation is enabled (0.12 = 1).
RW Set by
MODE[2:0]
bus
0.12 Auto-
Negotiation
Enable
1 = enable auto-negotiate process
(overrides 0.13 and 0.8)
0 = disable auto-negotiate process
RW Set by
MODE[2:0]
bus
0.11 Power Down 1 = General power down mode,
0 = normal operation
RW 0
0.10 Isolate 1 = electrical isolation of PHY from MII
0 = normal operation
RW Set by
MODE[2:0]
bus
0.9 Restart Auto-
Negotiate
1 = restart auto-negotiate process
0 = normal operation. Bit is self-clearing.
RW/
SC
0
0.8 Duplex Mode 1 = Full duplex,
0 = Half duplex.
Ignored if Auto Negotiation is enabled (0.12 = 1).
RW Set by
MODE[2:0]
bus
0.7 Collision Test 1 = enable COL test,
0 = disable COL test
RW 0
0.6:0 Reserved RO 0
Table 5.35 Register 1 - Basic Status
ADDRESS NAME DESCRIPTION MODE DEFAULT
1.15 100Base-T4 1 = T4 able,
0 = no T4 ability
RO 0
1.14 100Base-TX Full
Duplex
1 = TX with full duplex,
0 = no TX full duplex ability
RO 1
1.13 100Base-TX Half
Duplex
1 = TX with half duplex,
0 = no TX half duplex ability
RO 1
1.12 10Base-T Full
Duplex
1 = 10Mbps with full duplex
0 = no 10Mbps with full duplex ability
RO 1
1.11 10Base-T Half
Duplex
1 = 10Mbps with half duplex
0 = no 10Mbps with half duplex ability
RO 1
1.10:6 Reserved
1.5 Auto-Negotiate
Complete
1 = auto-negotiate process completed
0 = auto-negotiate process not completed
RO 0
1.4 Remote Fault 1 = remote fault condition detected
0 = no remote fault
RO/
LH
0