Datasheet

KSZ9031RNX
DS00002117F-page 38  2016-2017 Microchip Technology Inc.
9.9 1000BASE-T
Full-Duplex
1 = Advertise PHY is 1000BASE-T full-duplex
capable
0 = Advertise PHY is not 1000BASE-T full-duplex
capable
RW 1
9.8 1000BASE-T
Half-Duplex
1 = Advertise PHY is 1000BASE-T half-duplex
capable
0 = Advertise PHY is not 1000BASE-T half-duplex
capable
RW Set by MODE[3:0]
strapping pins.
See the Strap-In
Options -
KSZ9031RNX
section for details.
9.7:0 Reserved Write as 0, ignore on read RO —
Register Ah – 1000BASE-T Status
A.15 Master-Slave
Configura-
tion Fault
1 = Master-slave configuration fault detected
0 = No master-slave configuration fault detected
RO/LH/SC 0
A.14 Master-Slave
Configura-
tion Resolu-
tion
1 = Local PHY configuration resolved to master
0 = Local PHY configuration resolved to slave
RO 0
A.13 Local
Receiver
Status
1 = Local receiver OK (loc_rcvr_status = 1)
0 = Local receiver not OK (loc_rcvr_status = 0)
RO 0
A.12 Remote
Receiver
Status
1 = Remote receiver OK (rem_rcvr_status = 1)
0 = Remote receiver not OK (rem_rcvr_status = 0)
RO 0
A.11 Link Partner
1000BASE-T
Full-Duplex
Capability
1 = Link partner is capable of 1000BASE-T full-
duplex
0 = Link partner is not capable of 1000BASE-T
full-duplex
RO 0
A.10 Link Partner
1000BASE-T
Half-Duplex
Capability
1 = Link partner is capable of 1000BASE-T half-
duplex
0 = Link Partner is not capable of 1000BASE-T
half-duplex
RO 0
A.9:8 Reserved Reserved RO 00
A.7:0 Idle Error
Count
Cumulative count of errors detected when receiver
is receiving idles and PMA_TXMODE.indicate =
SEND_N.
The counter is incremented every symbol period
that rxerror_status = ERROR.
RO/SC 0000_0000
Register Dh - MMD Access – Control
D.15:14 MMD –
Operation
Mode
For the selected MMD device address (Bits [4:0] of
this register), these two bits select one of the fol-
lowing register or data operations and the usage
for MMD Access – Register/Data (Reg. Eh).
00 = Register
01 = Data, no post increment
10 = Data, post increment on reads and writes
11 = Data, post increment on writes only
RW 00
D.13:5 Reserved Reserved RW 00_0000_000
TABLE 4-3: IEEE-DEFINED REGISTER DESCRIPTIONS (CONTINUED)
Address Name Description
Mode
Note 4-1
Default