Datasheet
2016 Microchip Technology Inc. DS00002246A-page 57
KSZ8895MQX/RQX/FQX/MLX
3
Port 5 SW5-
RMII 50 MHz
clock output
disable
(used for
KSZ8895RQX
only)
Disable the output of port 5 SW5-RMII 50 MHz out-
put clock on RXC pin when 50 MHz clock is not
being used by the device and the 50 MHz clock
from external oscillator or opposite device in RMII
mode
1 = Disable clock output when RXC pin is not used
in RMII mode
0 = Enable clock output in RMII mode
Note: MQX/FQX/MLX is reserved with read only for
this bit.
R/W 0
2
P5-RMII
50 MHz clock
output dis-
able
(used for
KSZ8895RQX
only)
Disable the output of port 5 P5-RMII 50 MHz output
clock on RXC pin when 50 MHz clock is not being
used by the device and the 50 MHz clock from
external oscillator or opposite device in RMII mode
1 = Disable clock output when RXC pin is not used
in RMII mode
0 = Enable clock output in RMII mode
Note: MQX/FQX/MLX is reserved with read only for
this bit.
R/W 0
1 - 0 Reserved N/A Do not change RO 00
Register 25 (0x19): Port 1 Status 0
Register 41 (0x29): Port 2 Status 0
Register 57 (0x39): Port 3 Status 0
Register 73 (0x49): Port 4 Status 0
Register 89 (0x59): Port 5 Status 0
7 Hp_mdix
1 = HP Auto MDI/MDI-X mode
0 = Microchip Auto MDI/MDI-X mode
R/W 1
6 Reserved N/A Do not change RO 0
5Polrvs
1 = Polarity is reversed
0 = Polarity is not reversed
RO 0
4
Transmit
Flow Control
Enable
1 = Transmit flow control feature is active
0 = Transmit flow control feature is inactive
RO 0
3
Receive Flow
Control
Enable
1 = Receive flow control feature is active
0 = Receive flow control feature is inactive
RO 0
2
Operation
Speed
1 = Link speed is 100 Mbps
0 = Link speed is 10 Mbps
RO 0
1
Operation
Duplex
1 = Link duplex is full
0 = Link duplex is half
RO 0
0 Reserved N/A Do not change RO 0
Register 26 (0x1A): Port 1 PHY Special Control/Status
Register 42 (0x2A): Port 2 PHY Special Control/Status
Register 58 (0x3A): Port 3 PHY Special Control/Status
Register 74 (0x4A): Port 4 PHY Special Control/Status
Register 90 (0x5A): Port 5 PHY Special Control/Status
7
Vct 10M
Short
1 = less than 10 meter short detected RO 0
TABLE 4-3: PORT REGISTERS (CONTINUED)
Address Name Description Mode Default