I347-AT4 Datasheet, PDF (101/148 Pages) Intel Corporation – Intel® Ethernet Network Connection I347-AT4 Datasheet

Programmer’s Visible State—I347-AT4
Bits
Field
Mode
HW Rst SW Rst
Description
0000000 = No reflection (0 mV)
each bit above increases 7.8125mV.
When 23_5.7 = 0 and 23_5.13:11 = 000 or 100 the reflected
amplitude between the thresholds specified in registers
26_5, 27_5, 28_5.6:0, 26_7, 27_7, and 28_7.6:0 are
reported as 0 mV.
14:8
Reflected
Amplitude
RO
xx
Retain
When 23_5.7 = 0 and 23_5.13:11 is not 000 or 100 the
reflected amplitude between the thresholds specified in
register 25_5 and 25_7 are reported as 0 mV.
When 23_5.7 = 1 the actual offset or reflected amplitude is
reported and the threshold specified in registers 25_5, 26_5,
27_5, 28_5, 25_7, 26_7, 27_7, and 28_7 are ignored.
7:0
Distance
The amplitude value is valid only When 23_5.14 = 1.
If bit 15:8 = 0x00 indicates that the test failed.
Distance of reflection.
RO
xx
Retain
The distance value is valid only when 23_5.7 = 0 and
23_5.14 = 1.
Note:
This register reports the reflection seen based on the setting of register 23_5.13:11
000 = MDI[0] Tx to MDI[0] Rx
100 = MDI[0] Tx to MDI[0] Rx
101 = MDI[1] Tx to MDI[0] Rx
110 = MDI[2] Tx to MDI[0] Rx
111 = MDI[3] Tx to MDI[0] Rx
4.1.39 Cable Tester TX to MDI[1] Rx Coupling - Page 5, Register 17
Bits
Field
Mode
15
Reflected Polarity RO
14:8
Reflected
Amplitude
RO
7:0
Distance
RO
HW Rst SW Rst
Description
xx
Retain
1 = Positive Reflection
0 = Negative reflection
0000000 = No reflection (0 mV)
each bit above increases 7.8125mV.
When 23_5.7 = 0 and 23_5.13:11 = 000 or 101 the reflected
amplitude between the thresholds specified in registers 26_5,
27_5, 28_5.6:0, 26_7, 27_7, and 28_7.6:0 are reported as 0
mV.
xx
Retain
When 23_5.7 = 0 and 23_5.13:11 is not 000 or 101 the
reflected amplitude between the thresholds specified in
register 25_5 and 25_7 are reported as 0 mV.
When 23_5.7 = 1 the actual offset or reflected amplitude is
reported and the threshold specified in registers 25_5, 26_5,
27_5, 28_5, 25_7, 26_7, 27_7, and 28_7 are ignored.
The amplitude value is valid only When 23_5.14 = 1.
If bit 15:8 = 0x00 indicates that the test failed.
Distance of reflection.
xx
Retain
The distance value is valid only when 23_5.7 = 0 and
23_5.14 = 1.
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