I347-AT4 Datasheet, PDF (102/148 Pages) Intel Corporation – Intel® Ethernet Network Connection I347-AT4 Datasheet

I347-AT4—Programmer’s Visible State
Note:
This register reports the reflection seen based on the setting of register 23_5.13:11
000 = MDI[1] Tx to MDI[1] Rx
100 = MDI[0] Tx to MDI[1] Rx
101 = MDI[1] Tx to MDI[1] Rx
110 = MDI[2] Tx to MDI[1] Rx
111 = MDI[3] Tx to MDI[1] Rx
4.1.40 Cable Tester TX to MDI[2] Rx Coupling - Page 5, Register 18
Bits
15
14:8
7:0
Note:
Field
Mode HW Rst SW Rst
Description
Reflected Polarity RO
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 110 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.
Reflected
Amplitude
RO
xx
Retain
When 23_5.7 = 0 and 23_5.13:11 is not 000 or 110 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.
Distance
The amplitude value is valid only When 23_5.14 = 1.
If bit 15:8 = 0x00 indicates that the test failed.
RO
xx
Retain
Distance of reflection.
The distance value is valid only when 23_5.7 = 0 and
23_5.14 = 1.
This register reports the reflection seen based on the setting of register 23_5.13:11
000 = MDI[2] Tx to MDI[2] Rx
100 = MDI[0] Tx to MDI[2] Rx
101 = MDI[1] Tx to MDI[2] Rx
110 = MDI[2] Tx to MDI[2] Rx
111 = MDI[3] Tx to MDI[2] Rx
4.1.41 Cable Tester TX to MDI[3] Rx Coupling - Page 5, Register 19
Bits
15
Field
Mode
Reflected Polarity RO
HW Rst SW Rst
Description
xx
Retain
1 = Positive Reflection
0 = Negative reflection
92