KSZ9031RNX Datasheet, PDF (48/75 Pages) Micrel Semiconductor – Gigabit Ethernet Transceiver with RGMII Support

Micrel, Inc.
Address
Name
Description
Register Fh – Extended Status
F.15
1000Base-X
Full-Duplex
1 = PHY can perform 1000Base-X
full-duplex
0 = PHY cannot perform 1000Base-X full-
duplex
F.14
1000Base-X
Half-Duplex
1 = PHY can perform 1000Base-X
half-duplex
0 = PHY cannot perform 1000Base-X
half-duplex
F.13
1000Base-T
Full-Duplex
1 = PHY can perform 1000Base-T
full-duplex
0 = PHY cannot perform 1000Base-T
full-duplex
F.12
1000Base-T
Half-Duplex
1 = PHY can perform 1000Base-T half-duplex
0 = PHY cannot perform 1000Base-T
half-duplex
F.11:0
Reserved
Ignore when read
Note:
1. RW = Read/Write.
RO = Read only.
SC = Self-cleared.
LH = Latch high.
LL = Latch low.
Mode⁽¹⁾
RO
RO
RO
RO
RO
Default
0
0
1
1
–
Vendor-Specific Registers – Descriptions
Address
Name
Description
Register 11h – Remote Loopback
11.15:9
Reserved
Reserved
11.8
Remote
Loopback
1 = Enable remote loopback
0 = Disable remote loopback
11.7:1
Reserved
Reserved
11.0
Reserved
Reserved
Register 12h – LinkMD – Cable Diagnostic
12.15
Cable
Diagnostic
Test Enable
Write value:
1 = Enable cable diagnostic test. After test
has completed, this bit is self-cleared.
0 = Disable cable diagnostic test.
Read value:
1 = Cable diagnostic test is in progress.
0 = Indicates cable diagnostic test (if enabled)
has completed and the status information
is valid for read.
12.14
Reserved
This bit should always be set to ‘0’.
Mode⁽¹⁾
RW
RW
RW
RO
RW/SC
RW
Default
0000_000
0
1111_010
0
0
0
KSZ9031RNX
October 2012
48
M9999-103112-1.0