Lane 0 and Lane 1 Equalization Control (L01EC) – Offset 22c - 1.2 - ID:615146 | Intel® 400 Series Chipset On-Package Platform Controller Hub

Intel® 400 Series Chipset On-Package Platform Controller Hub

Online Register Database

ID	Date	Version	Classification
615146	08/09/2019	1.2	Public

Lane 0 and Lane 1 Equalization Control (L01EC) – Offset 22c

Each entry contains the values for the Lane with the corresponding default Lane number which is invariant to Link width and Lane reversal negotiation that occurs during Link training.

Based on the Port Configuration setting, if the maximum link width of the port is less than x4, the upper lane status bits should be ignored

Bit Range	Default	Access	Field Name and Description
30:28	111b	RW	Upstream Port Lane 1 Receiver Preset Hint (UPL1RPH) Upstream Port Lane 1 Receiver Preset Hint (UPL1RPH): Field contains the Receiver Preset Hint value sent or received during Link Equalization.
27:24	Fh	RW	Upstream Port Lane 1 Transmitter Preset (UPL1TP) Upstream Port Lane 1 Transmitter Preset (UPL1TP): Field contains the Transmit Preset value sent or received during Link Equalization.
23	-	-	Reserved
22:20	111b	RW	Downstream Port Lane 1 Receiver Preset Hint (DPL1RPH) Downstream Port Lane 1 Receiver Preset Hint (DPL1RPH): Receiver Preset Hint may be used as a hint for receiver equalization by this Port when the Port is operating as a Downstream Port.
19:16	Fh	RW	Downstream Port Lane 1 Transmitter Preset (DPL1TP) Downstream Port Lane 1 Transmitter Preset (DPL1TP): Transmitter Preset used for equalization by this Port when the Port is operating as a Downstream Port. This field is ignored when the Port is operating as an Upstream Port.
15	-	-	Reserved
14:12	111b	RW	Upstream Port Lane 0 Receiver Preset Hint (UPL0RPH) Upstream Port Lane 0 Receiver Preset Hint (UPL0RPH): Field contains the Receiver Preset Hint value sent or received during Link Equalization.
11:8	Fh	RW	Upstream Port Lane 0 Transmitter Preset (UPL0TP) Upstream Port Lane 0 Transmitter Preset (UPL0TP): Field contains the Transmit Preset value sent or received during Link Equalization.
7	-	-	Reserved
6:4	111b	RW	Downstream Port Lane 0 Receiver Preset Hint (DPL0RPH) Downstream Port Lane 0 Receiver Preset Hint (DPL0RPH): Receiver Preset Hint may be used as a hint for receiver equalization by this Port when the Port is operating as a Downstream Port.
3:0	Fh	RW	Downstream Port Lane 0 Transmitter Preset (DPL0TP) Downstream Port Lane 0 Transmitter Preset (DPL0TP): Transmitter Preset used for equalization by this Port when the Port is operating as a Downstream Port. This field is ignored when the Port is operating as an Upstream Port.