Datasheet

Micrel, Inc.
KSZ8081MNX/KSZ8081RNB
August
19, 2015 48
Revision 1.4
Register Description (Continued)
Address Name Description Mode
(10)
Default
Register 18h – Expanded Control
18.15:12 Reserved Reserved RW 0000
18.11
EDPD
Disabled
Energy-detect power-down mode
1 = Disable
0 = Enable
See also Register 10h, Bit [4] for PLL off.
RW 1
18.10
100Base-TX
Latency
1 = MII output is random latency
0 = MII output is fixed latency
For both settings, all bytes of received preamble
are passed to the MII output.
This bit applies only to KSZ8081MNX.
RW 0
18.9:7 Reserved Reserved RW 00_0
18.6
10Base-T
Preamble
Restore
1 = Restore received preamble to MII output
0 = Remove all seven bytes of preamble before
sending frame (starting with SFD) to MII output
This bit applies only to KSZ8081MNX,
RW 0
18.5:0 Reserved Reserved RW 00_0000
Register 1Bh – Interrupt Control/Status
1B.15
Jabber
Interrupt
Enable
1 = Enable jabber interrupt
0 = Disable jabber interrupt
RW 0
1B.14
Receive Error
Interrupt
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
Acknowledge
Interrupt
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
1B.9
Remote Fault
Interrupt
Enable
1 = Enable remote fault interrupt
0 = Disable remote fault interrupt
RW 0
1B.8
Link-Up
Interrupt
Enable
1 = Enable link-up interrupt
0 = Disable link-up interrupt
RW 0