TM4C1294NCPDT Datasheet, PDF (1640/1890 Pages) Texas Instruments – Tiva Microcontroller

Ethernet Controller
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
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
START
reserved
LINKQUAL
reserved
DONE FAIL
Type RW
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
Bit/Field
15
Name
START
Type
RW
Reset
0
Description
Cable Diagnostic Process Start
Diagnostic Start bit is cleared with raise of Diagnostic Done indication.
Value Description
0 Cable Diagnostic is disabled
1 Start cable diagnostic measurement
14:10
9:8
reserved
LINKQUAL
RO
0
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.
RO
0x1
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).
Value Description
0x0 reserved
0x1 Good Quality Link Indication
0x2 Mid- Quality Link Indication
0x3 Poor Quality Link Indication
7:2
reserved
RO
0
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.
1
DONE
RO
1
Cable Diagnostic Process Done
Value Description
0 Diagnostic has not completed
1 Indicates that the cable measurement process completed
0
FAIL
RO
0
Cable Diagnostic Process Fail
Value Description
0 Diagnostic has not failed
1 Indicates that the cable measurement process failed
1640
Texas Instruments-Production Data
June 18, 2014