10 |
Descrambler_Fast_Link_Down_Mode |
R/W |
0x0 |
Descrambler Fast Link Drop: This option can be enabled in parallel to the other fast link down modes in bits [3:0].
0x0 = Do not drop the link on descrambler link loss
0x1 = Drop the link on descrambler link loss
|
5 |
MDI/MDIX_Swap |
R/W |
0x0 |
MDI/MDIX Swap: Port Mirror Function: To enable port mirroring, set this bit and bit [6] high.
0x0 = MDI pairs normal (Receive on RD pair, Transmit on TD pair)
0x1 = Swap MDI pairs (Receive on TD pair, Transmit on RD pair)
|
3-0 |
Fast_Link_Down_Mode |
R/W |
0x0 |
Fast Link Down Modes: a) Bit 3 Drop the link based on RX Error count of the MII interface. When a predefined number of 32 RX Error occurences in a 10us interval is reached, the link will be dropped. b) Bit 2 Drop the link based on MLT3 Error count (Violation of the MLT3 coding in the DSP output). When a predefined number of 20 MLT3 Error occurences in10us interval is reached, the link will be dropped. c) Bit 1 Drop the link based on Low SNR Threshold. When a predefined number of 20 Threshold crossing occurences in a 10us interval is reached, the link will be dropped. d) Bit 0 Drop the link based on Signal/Energy Loss indication. When the Energy detector indicates Energy Loss, the link will be dropped. Typical reaction time is 10us. The Fast Link Down function is an OR of all 5 options (bits [10] and [3:0]), the designer can enable any combination of these conditions.
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