MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR
®
Technology in a Small Footprint
Datasheet
Table 5.21 Register 0 - Basic Control
ADDRESS
0.15
NAME
Reset
DESCRIPTION
1 = software reset. Bit is self-clearing. For best results,
when setting this bit do not set other bits in this
register. The configuration (as described in
is set from the register bit values,
and not from the mode pins.
1 = loopback mode,
0 = normal operation
1 = 100Mbps,
0 = 10Mbps.
Ignored if Auto Negotiation is enabled (0.12 = 1).
1 = enable auto-negotiate process
(overrides 0.13 and 0.8)
0 = disable auto-negotiate process
1 = General power down mode,
0 = normal operation
1 = electrical isolation of transceiver from MII
0 = normal operation
1 = restart auto-negotiate process
0 = normal operation. Bit is self-clearing.
1 = Full duplex,
0 = Half duplex.
Ignored if Auto Negotiation is enabled (0.12 = 1).
1 = enable COL test,
0 = disable COL test
MODE
RW/
SC
DEFAULT
0
0.14
0.13
Loopback
Speed Select
RW
RW
0
Set by
MODE[2:0]
bus
Set by
MODE[2:0]
bus
0
0
0
Set by
MODE[2:0]
bus
0
0
0.12
Auto-
Negotiation
Enable
Power Down
Isolate
Restart Auto-
Negotiate
Duplex Mode
RW
0.11
0.10
0.9
0.8
RW
RW
RW/
SC
RW
0.7
0.6:0
Collision Test
Reserved
RW
RO
Table 5.22 Register 1 - Basic Status
ADDRESS
1.15
1.14
1.13
1.12
1.11
1.10:6
1.5
NAME
100Base-T4
100Base-TX Full
Duplex
100Base-TX Half
Duplex
10Base-T Full
Duplex
10Base-T Half
Duplex
Reserved
Auto-Negotiate
Complete
1 = auto-negotiate process completed
0 = auto-negotiate process not completed
RO
0
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
DESCRIPTION
MODE
RO
RO
RO
RO
RO
DEFAULT
0
1
1
1
1
Revision 1.0 (04-15-09)
40
SMSC LAN8710/LAN8710i
DATASHEET
SMSC [ SMSC CORPORATION ]
