Datasheet

KSZ9031RNX
DS00002117F-page 40  2016-2017 Microchip Technology Inc.
12.13:12 Cable
Diagnostic
Test Pair
These two bits select the differential pair for testing:
00 = Differential pair A (Pins 2, 3)
01 = Differential pair B (Pins 5, 6)
10 = Differential pair C (Pins 7, 8)
11 = Differential pair D (Pins 10, 11)
RW 00
12.11:10 Reserved These two bits should always be set to ‘00’. RW 00
12.9:8 Cable
Diagnostic
Status
These two bits represent the test result for the
selected differential pair in Bits [13:12] of this regis-
ter.
00 = Normal cable condition (no fault detected)
01 = Open cable fault detected
10 = Short cable fault detected
11 = Reserved
RO 00
12.7:0 Cable
Diagnostic
Fault Data
For the open or short cable fault detected in Bits
[9:8] of this register, this 8-bit value represents the
distance to the cable fault.
RO 0000_0000
Register 13h – Digital PMA/PCS Status
13.15:3 Reserved Reserved RO/LH 0000_0000_0000_0
13.2 1000BASE-T
Link Status
1000BASE-T link status
1 = Link status is OK
0 = Link status is not OK
RO 0
13.1 100BASE-TX
Link Status
100BASE-TX link status
1 = Link status is OK
0 = Link status is not OK
RO 0
13.0 Reserved Reserved RO 0
Register 15h – RXER Counter
15.15:0 RXER
Counter
Receive error counter for symbol error frames RO/RC 0000_0000_0000_00
00
Register 1Bh – Interrupt Control/Status
1B.15 Jabber Inter-
rupt Enable
1 = Enable jabber interrupt
0 = Disable jabber interrupt
RW 0
1B.14 Receive
Error Inter-
rupt Enable
1 = Enable receive error interrupt
0 = Disable receive error interrupt
RW 0
1B.13 Page
Received
Interrupt
Enable
1 = Enable page received interrupt
0 = Disable page received interrupt
RW 0
1B.12 Parallel
Detect Fault
Interrupt
Enable
1 = Enable parallel detect fault interrupt
0 = Disable parallel detect fault interrupt
RW 0
1B.11 Link Partner
Acknowl-
edge Inter-
rupt Enable
1 = Enable link partner acknowledge interrupt
0 = Disable link partner acknowledge interrupt
RW 0
1B.10 Link-Down
Interrupt
Enable
1 = Enable link-down interrupt
0 = Disable link-down interrupt
RW 0
TABLE 4-4: VENDOR-SPECIFIC REGISTER DESCRIPTIONS (CONTINUED)
Address Name Description
Mode
Note 4-1
Default