I347-AT4 Datasheet, PDF (105/148 Pages) Intel Corporation – Intel® Ethernet Network Connection I347-AT4 Datasheet

Programmer’s Visible State—I347-AT4
Bits
Field
7:6
Mode
5:0
Peak Detection
Hysteresis
Mode
R/W
R/W
HW Rst SW Rst
Description
0x0
0x03
Retain
Retain
00 = Maximum peak above threshold
01 = First or last peak above threshold. See register
28_5.13.
10 = Offset
11 = Sample point at distance set by 24_5.7:0
0x00 = 0 mV,
0x01 = 7.81 mV,...,
0x3F = ± 492 mv
4.1.45 Cable Tester Sample Point Distance - Page 5, Register 24
Bits
Field
15:10 Reserved
Mode
RO
Distance to
9:0
measure/
R/W
Distance to start
HW Rst SW Rst
Description
0x00
0x000
0x00
Retain
0
When 23_5.7:6 = 11 the measurement is taken at this
distance. (00 to 3FF)
When 23_5.7:6 = 0x any distance below this distance is not
considered (00 to FF). Bit 9:8 is ignored.
4.1.46 Cable Tester Cross Pair Positive Threshold - Page 5, Register 25
Bits
15
14:8
7
6:0
Field
Mode
Reserved
Cross Pair
Positive
Threshold > 30m
Reserved
Cross Pair
Positive
Threshold < 30m
RO
R/W
RO
R/W
HW Rst SW Rst
0x0
0x01
0x0
0x04
0x0
Retain
0x0
Retain
0
0x00 = 0 mV,
0x01 = 7.81 mV,...,
0x7F = 992 mv
0
0x00 = 0 mV,
0x01 = 7.81 mV,...,
0x7F = 992 mv
Description
4.1.47
Cable Tester Same Pair Impedance Positive Threshold 0 and 1 -
Page 5, Register 26
Bits
15
14:8
7
6:0
Field
Reserved
Same-Pair
Positive
Threshold
10m - 50m
Reserved
Same-Pair
Positive
Threshold
< 10m
Mode
RO
R/W
RO
R/W
HW Rst SW Rst
0x0
0x0
0
0x0F
Retain
0x00 = 0 mV,
0x01 = 7.81 mV,...,
0x7F = 992 mv
0x0
0x0
0
0x12
Retain
0x00 = 0 mV,
0x01 = 7.81 mV,...,
0x7F = 992 mv
Description
95