KSZ8041RNL Micrel Inc, KSZ8041RNL Datasheet - Page 32

• Manufacturer Part Number: KSZ8041RNL
• Description: TXRX 10/100 3.3V PHY RMII 32-MLF
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KSZ8041RNL

• Number Of Drivers/receivers: 1/1
• Protocol: RMII
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 32-MLF®, QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-3503

Micrel, Inc.
Register Map
Register Description
September 2010
Register Number (Hex)
0h
1h
2h
3h
4h
5h
6h
7h
8h
9h – 13h
14h
15h
16h – 1Ah
1Bh
1Ch – 1Dh
1Eh
1Fh
Address
Register 0h – Basic Control
0.15
0.14
0.13
0.12
0.11
0.10
Name
Reset
Loop-back
Speed Select
(LSB)
Auto-
Negotiation
Enable
Power Down
Isolate
Description
Basic Control
Basic Status
PHY Identifier 1
PHY Identifier 2
Auto-Negotiation Advertisement
Auto-Negotiation Link Partner Ability
Auto-Negotiation Expansion
Auto-Negotiation Next Page
Link Partner Next Page Ability
Reserved
MII Control
RXER Counter
Reserved
Interrupt Control/Status
Reserved
PHY Control 1
PHY Control 2
Description
1 = Software reset
0 = Normal operation
This bit is self-cleared after a ‘1’ is written to it.
1 = Loop-back mode
0 = Normal operation
1 = 100Mbps
0 = 10Mbps
This bit is ignored if auto-negotiation is enabled
(register 0.12 = 1).
1 = Enable auto-negotiation process
0 = Disable auto-negotiation process
If enabled, auto-negotiation result overrides
settings in register 0.13 and 0.8.
1 = Power down mode
0 = Normal operation
1 = Electrical isolation of PHY from MII and
0 = Normal operation
TX+/TX-
32
Mode
RW/SC
RW
RW
RW
RW
RW
(1)
Default
0
0
Set by SPEED strapping pin.
See “Strapping Options” section
for details.
Set by NWAYEN strapping pin.
See “Strapping Options” section
for details.
0
Set by ISO strapping pin.
See “Strapping Options” section
for details.
M9999-090910-1.4
KSZ8041NL/RNL