Datasheet

KSZ8873MLL/FLL/RLL
DS00002348A-page 54  2017 Microchip Technology Inc.
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.
1
For port 1,
P1DPX pin
value during
reset.
For port 2,
SMRXD31 pin
value during
reset.
4
Advertise Flow
Control Capability
R/W
1 = advertise flow control (pause) capability
0 = suppress flow control (pause) capability from
transmission to link partner
1
3
Advertise 100BT
Full-Duplex
Capability
R/W
1 = advertise 100BT full-duplex capability
0 = suppress 100BT full-duplex capability from trans-
mission to link partner
1
2
Advertise 100BT
Half-Duplex
Capability
R/W
1 = advertise 100BT half-duplex capability
0 = suppress 100BT half-duplex capability from trans-
mission to link partner
1
1
Advertise 10BT Full-
Duplex Capability
R/W
1 = advertise 10BT full-duplex capability
0 = suppress 10BT full-duplex capability from trans-
mission to link partner
1
0
Advertise 10BT Half-
Duplex Capability
R/W
1 = advertise 10BT half-duplex capability
0 = suppress 10BT half-duplex capability from trans-
mission to link partner
1
Register 29 (0x1D): Port 1 Control 13
Register 45 (0x2D): Port 2 Control 13
Register 61 (0x3D): Reserved, Not Applicable to Port 3
7 LED Off 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 ‘1’.
0 = normal operation
0
6 Txdis R/W
1 = disable the port’s transmitter
0 = normal operation
0
5Restart AN R/W
1 = restart auto-negotiation
0 = normal operation
0
4
Disable Far-End
Fault
R/W
1 = disable far-end fault detection and pattern trans-
mission.
0 = enable far-end fault detection and pattern trans-
mission
0
3 Power Down R/W
1 = power down
0 = normal operation
0
2
Disable Auto MDI/
MDI-X
R/W
1 = disable auto MDI/MDI-X function
0 = enable auto MDI/MDI-X function
0
1Force MDI R/W
If auto MDI/MDI-X is disabled,
1 = force PHY into MDI mode (transmit on RXP/RXM
pins)
0 = force PHY into MDI-X mode (transmit on TXP/
TXM pins)
0
TABLE 4-7: PORT REGISTERS (REGISTERS 16 - 95) (CONTINUED)
Bit Name R/W Description Default