Datasheet

Register 98: Ethernet PHY Cable Diagnostic Control - MR30 (EPHYCDCR),
address 0x01E
This register provides the ability to start cable diagnostics and monitor its status.
Ethernet PHY Cable Diagnostic Control - MR30 (EPHYCDCR)
Base n/a
Address 0x01E
Type RO, reset 0x0102
0123456789101112131415
FAILDONEreservedLINKQUALreservedSTART
RORORORORORORORORORORORORORORORWType
0100000010000000Reset
DescriptionResetTypeNameBit/Field
Cable Diagnostic Process Start
Diagnostic Start bit is cleared with raise of Diagnostic Done indication.
DescriptionValue
Cable Diagnostic is disabled0
Start cable diagnostic measurement1
0RWSTART15
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0ROreserved14:10
Link Quality Indication
The value of these bits are valid only when link is active (when the LINK
bit in the EPHYSTS register is a 0x1).
DescriptionValue
reserved0x0
Good Quality Link Indication0x1
Mid- Quality Link Indication0x2
Poor Quality Link Indication0x3
0x1ROLINKQUAL9:8
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0ROreserved7:2
Cable Diagnostic Process Done
DescriptionValue
Diagnostic has not completed0
Indicates that the cable measurement process completed1
1RODONE1
Cable Diagnostic Process Fail
DescriptionValue
Diagnostic has not failed0
Indicates that the cable measurement process failed1
0ROFAIL0
June 18, 20141764
Texas Instruments-Production Data
Ethernet Controller