Datasheet

KSZ8895MQX/RQX/FQX/MLX
DS00002246A-page 60  2016 Microchip Technology Inc.
3 Power Down
1, power down.
0, normal operation.
R/W 0
2
Disable Auto
MDI/MDI-X
1, disable auto MDI/MDI-X function.
0, enable auto MDI/MDI-X function.
R/W 0
1 Forced MDI
1, if auto MDI/MDI-X is disabled, force PHY into
MDI mode (transmit on RX pair).
0, MDI-X mode (transmit on TX pair).
R/W 0
0
MAC
Loopback
1 = Perform MAC loopback, loop back path as fol-
lows: E.g. set port 1 MAC Loopback (reg. 29, bit 0
= ‘1’), use port 2 as monitor port. The packets will
transfer
Start: Port 2 receiving (also can start to receive
packets from port 3, 4, 5).
Loopback: Port 1’s MAC.
End: Port 2 transmitting (also can end at Port 3,
4, 5 respectively).
Setting reg. 45, 61, 77, 93, bit 0 = ‘1’ will perform
MAC loopback on port 2, 3, 4, 5 respectively.
0 = Normal Operation.
R/W 0
Register 30 (0x1E): Port 1 Status 1
Register 46 (0x2E): Port 2 Status 1
Register 62 (0x3E): Port 3 Status 1
Register 78 (0x4E): Port 4 Status 1
Register 94 (0x5E): Port 5 Status 1
7 MDIX Status
1, MDI.
0, MDI-X.
RO 0
6 AN Done
1, AN done.
0, AN not done.
RO 0
5 Link Good
1, link good.
0, link not good.
RO 0
4
Partner Flow
Control
Capability
1, link partner flow control capable.
0, link partner not flow control capable.
RO 0
3
Partner
100BT Full-
Duplex
Capability
1, link partner 100BT full-duplex capable.
0, link partner not 100BT full-duplex capable.
RO 0
2
Partner
100BT Half-
Duplex
Capability
1, link partner 100BT half-duplex capable.
0, link partner not 100BT half-duplex capable.
RO 0
1
Partner 10BT
Full-Duplex
Capability
1, link partner 10BT full-duplex capable.
0, link partner not 10BT full-duplex capable.
RO 0
0
Partner 10BT
Half-Duplex
Capability
1, link partner 10BT half-duplex capable.
0, link partner not 10BT half-duplex capable.
RO 0
TABLE 4-3: PORT REGISTERS (CONTINUED)
Address Name Description Mode Default