ksz8021rnli Micrel Semiconductor, ksz8021rnli Datasheet - Page 25

• Manufacturer Part Number: ksz8021rnli
• Description: 10base-t/100base-tx Phy With Rmii Support
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
Register Description (Continued)
August 2010
Register 0h – Basic Control
Register 1h – Basic Status
Address
1.10:7
0.6:0
0.11
0.10
1.15
1.14
1.13
1.12
1.11
0.9
0.8
0.7
1.6
1.5
1.4
1.3
10Base-T Half
10Base-T Full
Collision Test
Remote Fault
Restart Auto-
Duplex Mode
No Preamble
Power Down
100Base-TX
100Base-TX
100Base-T4
Half Duplex
Negotiation
Negotiation
Negotiation
Full Duplex
Reserved
Reserved
Complete
Duplex
Duplex
Isolate
Name
Ability
Auto-
Auto-
Description
1 = Power down mode
0 = Normal operation
If software reset (register 0.15) is used to exit
Power Down mode (register 0.11 = 1), two
software reset writes (register 0.15 = 1) are
required. First write clears Power Down mode;
second write resets chip and re-latches the pin
strapping pin values.
1 = Electrical isolation of PHY from MII
0 = Normal operation
1 = Restart auto-negotiation process
0 = Normal operation.
This bit is self-cleared after a ‘1’ is written to it.
1 = Full-duplex
0 = Half-duplex
1 = Enable COL test
0 = Disable COL test
1 = T4 capable
0 = Not T4 capable
1 = Capable of 100Mbps full-duplex
0 = Not capable of 100Mbps full-duplex
1 = Capable of 100Mbps half-duplex
0 = Not capable of 100Mbps half-duplex
1 = Capable of 10Mbps full-duplex
0 = Not capable of 10Mbps full-duplex
1 = Capable of 10Mbps half-duplex
0 = Not capable of 10Mbps half-duplex
1 = Preamble suppression
0 = Normal preamble
1 = Auto-negotiation process completed
0 = Auto-negotiation process not completed
1 = Remote fault
0 = No remote fault
1 = Capable to perform auto-negotiation
0 = Not capable to perform auto-negotiation
25
Mode
RW
RW
RW/SC
RW
RW
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO/LH
RO
(1)
Default
0
0
0
1
0
000_0000
0
1
1
1
1
000_0
1
0
0
1
KSZ8021RNL / KSZ8031RNL
M9999-082710-1.0