Datasheet
Datasheet, Volume 2 121
Processor Integrated I/O (IIO) Configuration Registers
3.2.5.24 LER_RPERRMSK—Live Error Recovery Root Port Error
Mask Register
3.2.6 PCI Express* Lane Equalization Registers
3.2.6.1 LN[0:3]EQ—Lane 0 through Lane 3 Equalization
Control Register
LER_RPERRMSK
Bus: 0 Device: 0 Function: 0 Offset: 294
Bus: 0 Device: 1 Function: 0–1 Offset: 294
Bus: 0 Device: 2 Function: 0–3 Offset: 294
Bus: 0 Device: 3 Function: 0–3 Offset: 294
Bit Attr
Reset
Value
Description
31:7 RV 0h Reserved
6RWS0b
Fatal Error Messages Received Mask
Masks LER response to Fatal Error Messages received
5RWS0b
Non-Fatal Error Messages Received Mask
Masks LER response to Non-Fatal Error Messages received.
4:0 RV 0h Reserved
LN[0:3]EQ
Bus: 0 Device: 1 Function: 0–1 Offset: 25Ch, 25Eh, 260h, 262h
Bus: 0 Device: 2 Function: 0–3 Offset: 25Ch, 25Eh, 260h, 262h
Bus: 0 Device: 3 Function: 0–3 Offset: 25Ch, 25Eh, 260h, 262h
Bit Attr
Reset
Value
Description
15 RV 0h Reserved
14:12 RW1C 0000h
Downstream Component Receiver Preset Hint
Receiver Preset Hint for Downstream Component with the following encoding. The
Upstream component must pass on this value in the EQ TS2’es.
000b = -6 dB
001b = -7 dB
010b = -8 dB
011b = -9 dB
100b = -10 dB
101b = -11 dB
110b = -12 dB
111b = Reserved
For a Downstream Component, this field reflects the latest Receiver Preset value
requested from the Upstream Component on Lane 0. The default value is 111b.
11 RV 0h Reserved
10:8 RW-O 2h
Downstream Component Transmitter Preset
Transmitter Preset for Downstream Component with the following encoding. The
Upstream component must pass on this value in the EQ TS2’es.
000b = -6 dB for de-emphasis, 0 dB for preshoot
001b = -3.5 dB for de-emphasis, 0 dB for preshoot
010b = -6 dB for de-emphasis, -3.5 dB for preshoot
011b = -3.5 dB for de-emphasis, -3.5 dB for preshoot
100b = -0 dB for de-emphasis, 0 dB for preshoot
101b = -0 dB for de-emphasis, -3.5 dB for preshoot
others = reserved
For a Downstream Component, this field reflects the latest Transmitter Preset
requested from the Upstream Component on Lane 0. The default value is 111b.