KSZ8873MLL_11 Datasheet, PDF (64/108 Pages) Micrel Semiconductor – Integrated 3-Port 10/100 Managed Switch with PHYs

Micrel, Inc.
KSZ8873MLL/FLL/RLL
Register 28 (0x1C): Port 1 Control 12
Register 44 (0x2C): Port 2 Control 12
Register 60 (0x3C): Reserved, not applied to port 3
Bit
Name
R/W Description
7
Auto
R/W =1, Auto negotiation is on
Negotiation
Enable
=0, Disable auto negotiation; speed and duplex are
determined by bits 6 and 5 of this register.
6
Force Speed R/W =1, Forced 100BT if AN is disabled (bit 7)
=0, Forced 10BT if AN is disabled (bit 7)
5
Force Duplex R/W =1, Forced full duplex if (1) AN is disabled or (2) AN is
enabled but failed.
=0, Forced half duplex if (1) AN is disabled or (2) AN is
enabled but failed.
Note: This bit or strap pin should be set to ‘0’ for the correct
duplex mode indication of LED and register status when the
link-up is AN to force mode.
4
Advertise Flow R/W =1, Advertise flow control (pause) capability
Control
capability
=0, Suppress flow control (pause) capability from
transmission to link partner
3
Advertise
R/W =1, Advertise 100BT full duplex capability
100BT Full
Duplex
Capability
=0, Suppress 100BT full duplex capability from transmission
to link partner
2
Advertise
R/W =1, Advertise 100BT half duplex capability
100BT Half
Duplex
Capability
=0, Suppress 100BT half duplex capability from
transmission to link partner
1
Advertise
R/W =1, Advertise 10BT full duplex capability
10BT Full
Duplex
Capability
=0, Suppress 10BT full duplex capability from transmission
to link partner
0
Advertise
R/W =1, Advertise 10BT half duplex capability
10BT Half
Duplex
Capability
=0, Suppress 10BT half duplex capability from transmission
to link partner
Register 29 (0x1D): Port 1 Control 13
Register 45 (0x2D): Port 2 Control 13
Register 61 (0x3D): Reserved, not applied to port 3
Bit
Name
7
LED Off
6
Txdis
R/W Description
R/W =1, Turn off all port’s LEDs (LEDx_1, LEDx_0, where “x” is
the port number). These pins will be driven high if this bit is
set to one.
=0, Normal operation
R/W =1, Disable the port’s transmitter
=0, Normal operation
Default
1
For port 1, P1ANEN pin value
during reset.
For port 2, SMRXD33 pin
value during reset
1
For port 1, P1SPD pin value
during reset.
For port 2, SMRXD32 pin
value during reset.
1
For port 1, P1DPX pin value
during reset.
For port 2, SMRXD31 pin
value during reset.
1
1
1
1
1
Default
0
0
September 2011
64
M9999-092111-1.5