KSZ8001L Datasheet, PDF (26/46 Pages) Micrel Semiconductor – 1.8C, 3.3V 10/100BASE-T/TX/FX Physical Layer Transceiver

Micrel
Register Map
Register No.
0h
1h
2h
3h
4h
5h
6h
7h
8h
9h-14h
15h
16h – 1ah
1bh
1ch
1dh
1eh
1fh
Description
Basic Control Register
Basic Status Register
PHY Identifier I
PHY Identifier II
Auto-Negotiation Advertisement Register
Auto-Negotiation Link Partner Ability Register
Auto-Negotiation Expansion Register
Auto-Negotiation Next Page Register
Link Partner Next Page Ability
Reserved
RXER Counter Register
Reserved
Interrupt Control/Status Register
Reserved
LinkMD Control/Status Register
PHY Control Register
100BASE-TX PHY Control Register
Address
Name
Description
Register 0h – Basic Control
0.15
Reset
1 = software reset. Bit is self-clearing
0.14
0.13
0.12
0.11
Loop-back
Speed Select
(LSB)
Auto-
Negotiation
Enable
Power Down
1 = loop-back mode
0 = normal operation
1 = 100Mb/s
0 = 10Mb/s
Ignored if Auto-Negotiation is enabled
(0.12 = 1)
1 = enable auto-negotiation process (override
0.13 and 0.8)
0 = disable auto-negotiation process
1 = power down mode
0 = normal operation
Mode
RW/
SC
RW
RW
RW
RW
0.10
0.9
0.8
0.7
0.6:1
0.0
Isolate
Restart Auto-
Negotiation
Duplex Mode
Collision Test
Reserved
Disable
Transmitter
1 = electrical isolation of PHY from MII and
TX+/TX-
0 = normal operation
1 = restart auto-negotiation process
0 = normal operation. Bit is self-clearing
1 = full duplex
0 = half duplex
1 = enable COL test
0 = disable COL test
0 = enable transmitter
1 = disable transmitter
RW
RW/
SC
RW
RW
RO
RW
Default
0
0
Set by SPD100
Set by NWAYEN
0
Set by ISO
0
Set by DUPLEX
0
0
0
KSZ8001
June 2009
Revision 1.04
26