WG82577LM S LGWS Intel, WG82577LM S LGWS Datasheet - Page 80

• Manufacturer Part Number: WG82577LM S LGWS
• Manufacturer: Intel

Specifications of WG82577LM S LGWS

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Table 40.
73
Diagnostics Status Register (Linking Enabled) - Address 31
15
14
13
12
11
10
9:2
1
0
Bits
Reserved
Pair Swap on Pairs C
and D
Polarity on Pair D
Polarity on Pair C
Polarity on Pair B
Polarity on Pair A
Cable Length
Reserved
Excessive Pair Skew
Field
RO
RO
RO
RO
RO
RO
RO
Type
0b
0b
0b
0b
0b
0b
0b
Default
Reserved.
If this bit is set, the PHY has detected that received
pair 2 (RJ-45 pins 4 and 5) and pair 3 (RJ-45 pins 7
and 8) have crossed over.
1b = Pairs C and D are swapped (1000BASE-T
only).
0b = Pairs C and D are not swapped (1000BASE-T
only).
1b = Polarity on pair D is inverted (1000BASE-T
only).
0b = Polarity on pair D is normal (1000BASE-T
only).
1b = Polarity on pair C is inverted (1000BASE-T
only).
0b = Polarity on pair C is normal (1000BASE-T
only).
1b = Polarity on pair B is inverted (10BASE-T or
1000BASE-T only).
0b = Polarity on pair B is normal (10BASE-T or
1000BASE-T only).
1b = Polarity on pair A is inverted (10BASE-T or
1000BASE-T only).
0b = Polarity on pair A is normal (10BASE-T or
1000BASE-T only).
This 8-bit integer value is the cable length in meters
when the link is active. The value 0xFF indicates an
unknown result.
Cable length when the link is active.
Reserved.
Excessive pair skew in 1000BASE-T is detected by
detecting that the scrambler has not acquired a
1000BASE-T link and cannot be brought up. In this
case, the PHY usually falls back to 100BASE-TX or
10BASE-T. It is possible for other scrambler
acquisition errors to be mistaken for excessive pair
skew.
1b = Excessive pair skew (1000BASE-T only).
0b = No excessive pair skew (1000BASE-T only).
82577 GbE PHY—Programmer’s Visible State
Description