WBLXT9785HE.D0-865114 Cortina Systems Inc, WBLXT9785HE.D0-865114 Datasheet - Page 209
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WBLXT9785HE.D0-865114
Manufacturer Part Number
WBLXT9785HE.D0-865114
Description
Manufacturer
Cortina Systems Inc
Datasheet
1.WBLXT9785HE.D0-865114.pdf
(221 pages)
Specifications of WBLXT9785HE.D0-865114
Lead Free Status / RoHS Status
Compliant
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LXT9785/LXT9785E
Datasheet
249241, Revision 11.0
16 April 2007
Table 101
Cortina Systems
Cable Diagnostics Register (Address 29, Hex 1D)
®
1. R/W = Read/Write, R = Read only, LH = Latching High, cleared when read
2. Recommended default value.
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
15:14
13:11
Bit
7:0
10
9
8
Reserved
Start-Test
CD_EN
Test_Done
Fault_Type
Line Fault Counter
Name
Write as 01, ignore on read
000 =Do not perform cable fault test (Default)
101 = Perform long cable fault test only
110 = Perform short cable fault test only
Once Register bit 29.9 is set, the Start-Test
bits will clear when read.
Any other combination of the Register bit
settings are reserved and should not be used.
0 = Normal operation
1 = Enable cable diagnostic tests. Forces
0 = Testing is still in progress
1 = Testing is complete
The Line Fault Counter and Fault_Type bits
are valid.
0 = Open condition has been detected
1 = Short Condition has been detected
“FF” if no line fault is found, or
Distance to fault, approximately 1 m * counter
value (refer to
Diagnostics Overview , on page 156
details).
(Valid only when Test_Done bit is set.)
link to drop.
Section 4.13, Cable
Description
for
7.0 Register Definitions
Type
R/W
R/W
R/W
LH
LH
LH
LH
R
R
R
1
Page 209
Default
0x00
000
01
0
0
0
2
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