Micrel, Inc.
Register Description (Continued)
Address
Name
Description
1b.5
Page Receive
Interrupt
1 = Page Receive occurred
0 = Page Receive did not occurred
1b.4
Parallel Detect 1 = Parallel Detect Fault occurred
Fault Interrupt 0 = Parallel Detect Fault did not occurred
Link Partner
1 = Link Partner Acknowledge occurred
1b.3
Acknowledge
Interrupt
0 = Link Partner Acknowledge did not occurred
1b.2
Link Down
Interrupt
1 = Link Down occurred
0 = Link Down did not occurred
1b.1
Remote Fault
Interrupt
1 = Remote Fault occurred
0 = Remote Fault did not occurred
1b.0
Link Up
Interrupt
1 = Link Up occurred
0 = Link Up did not occurred
Register 1Dh – LinkMD® Control/Status
1d.15
1d.14:13
1d.12
1d.11:9
1d.8:0
Cable
Diagnostic
Test Enable
Cable
Diagnostic
Test Result
Short Cable
Indicator
Reserved
Cable Fault
Counter
1 = Enable cable diagnostic test. After test
has completed, this bit is self-cleared.
0 = Indicates cable diagnostic test (if enabled)
has completed and the status information
is valid for read.
[00] = normal condition
[01] = open condition has been detected in
cable
[10] = short condition has been detected in
cable
[11] = cable diagnostic test has failed
1 = Short cable (<10 meter) has been detected
by LinkMD®.
Distance to fault
Register 1Eh – PHY Control 1
1e.15:10
Reserved
1e.9
Enable Pause 1 = Flow control capable
(Flow Control) 0 = No flow control capability
1 = Link is up
1e.8
Link Status
0 = Link is down
1 = Polarity is reversed
1e.7
Polarity Status
0 = Polarity is not reversed
1e.6
Reserved
1e.5
MDI/MDI-X
State
1 = MDI-X
0 = MDI
1 = Presence of signal on receive differential
pair
1e.4
Energy Detect
0 = No signal detected on receive differential
pair
Mode(1)
RO/SC
RO/SC
RO/SC
RO/SC
RO/SC
RO/SC
RW/SC
RO
RO
RW
RO
RO
RO
RO
RO
RO
RO
RO
Default
0
0
0
0
0
0
KSZ8051MLL
0
00
0
000
0_0000_0000
0000_00
0
0
0
0
July 2010
34
M9999-071210-1.0