Lane Error Status Register
6.2.109 ln[0:3]eq
Lane 0 through Lane 3 Equalization Control
Type: CFG PortID: N/A
Bus: 0 Device: 1 Function: 0-1
Bus: 0 Device: 2 Function: 0-3
Bus: 0 Device: 3 Function: 0-3
Offset: 0x258
Bit Attr Default Description
15:0 RW1CS 0x0 lane:
A value of 1b in any bit indicates if the corresponding PCIe Express Lane detected lane based error.
bit 0 Lane 0 Error Detected bit 1 Lane 1 Error Detected bit 2 Lane 2 Error Detected bit 3 Lane 3 Error Detected
bit 4 Lane 4 Error Detected (not used when the link is bifurcated as x4) bit 5 Lane 5 Error Detected (not used when the link is bifurcated as x4) bit 6 Lane 6 Error Detected (not used when the link is bifurcated as x4) bit 7 Lane 7 Error Detected (not used when the link is bifurcated as x4) bit 8 Lane 8 Error Detected (not used when the link is bifurcated as x4 or x8) bit 9 Lane 9 Error Detected (not used when the link is bifurcated as x4 or x8) bit 10 Lane 10 Error Detected (not used when the link is bifurcated as x4 or x8) bit 11 Lane 11 Error Detected (not used when the link is bifurcated as x4 or x8) bit 12 Lane 12 Error Detected (not used when the link is bifurcated as x4 or x8) bit 13 Lane 13 Error Detected (not used when the link is bifurcated as x4 or x8) bit 14 Lane 14 Error Detected (not used when the link is bifurcated as x4 or x8) bit 15 Lane 15 Error Detected (not used when the link is bifurcated as x4 or x8)
Type: CFG PortID: N/A
Bus: 0 Device: 1 Function: 0-1
Bus: 0 Device: 2 Function: 0-3
Bus: 0 Device: 3 Function: 0-3
Offset: 0x25c, 0x25e, 0x260, 0x262
Bit Attr Default Description
14:12 RW_O 0x7 dnrxpreset:
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.
11:8 RW_O 0x8 dntxpreset:
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.
6:4 RO 0x7 uprxpreset:
Upstream Component Receiver Preset Hint
Receiver Preset Hint for Upstream Component. The upstream component uses this hint for receiver equalization. The Root Ports are upstream components. The encodings are defined below.
000b: -6 dB 001b: -7 dB 010b: -8 dB 011b: -9 dB 100b: -10 dB 101b: -11 dB 110b: -12 dB 111b: reserved
3:0 RW_O 0x8 uptxpreset:
Upstream Component Transmitter Preset
Transmitter Preset for an Upstream Component. The Root Ports are upstream components. The encodings are defined below.
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
Type: CFG PortID: N/A
Bus: 0 Device: 1 Function: 0-1
Bus: 0 Device: 2 Function: 0-3
Bus: 0 Device: 3 Function: 0-3
Offset: 0x25c, 0x25e, 0x260, 0x262
Bit Attr Default Description
6.2.110 ln[4:7]eq
Lane 4 through Lane 7 Equalization Control
This register is unused when the link is configured at x4 in the bifurcation register.
Type: CFG PortID: N/A
Bus: 0 Device: 1 Function: 0-1
Bus: 0 Device: 2 Function: 0, 2
Bus: 0 Device: 3 Function: 0, 2
Offset: 0x264, 0x266, 0x268, 0x26a
Bit Attr Default Description
14:12 RW_O 0x7 dnrxpreset:
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.
11:8 RW_O 0x8 dntxpreset:
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.
6:4 RO 0x7 uprxpreset:
Upstream Component Receiver Preset Hint
Receiver Preset Hint for Upstream Component. The upstream component uses this hint for receiver equalization. The Root Ports are upstream components. The encodings are defined below.
000b: -6 dB 001b: -7 dB 010b: -8 dB 011b: -9 dB 100b: -10 dB 101b: -11 dB 110b: -12 dB 111b: reserved
6.2.111 ln[8:15]eq
Lane 8 though Lane 15 Equalization Control
This register is unused when the link is configured at x4 or x8 in the bifurcation register.
3:0 RW_O 0x8 uptxpreset:
Upstream Component Transmitter Preset
Transmitter Preset for an Upstream Component. The Root Ports are upstream components. The encodings are defined below.
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
Type: CFG PortID: N/A
Bus: 0 Device: 1 Function: 0-1
Bus: 0 Device: 2 Function: 0, 2
Bus: 0 Device: 3 Function: 0, 2
Offset: 0x264, 0x266, 0x268, 0x26a
Bit Attr Default Description
Type: CFG PortID: N/A
Bus: 0 Device: 2 Function: 0
Bus: 0 Device: 3 Function: 0
Offset: 0x26c, 0x26e, 0x270, 0x272, 0x274, 0x276, 0x278, 0x27a
Bit Attr Default Description
14:12 RW_O 0x7 dnrxpreset:
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.
11:8 RW_O 0x8 dntxpreset:
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.
6:4 RO 0x7 uprxpreset:
Upstream Component Receiver Preset Hint
Receiver Preset Hint for Upstream Component. The upstream component uses this hint for receiver equalization. The Root Ports are upstream components. The encodings are defined below.
000b: -6 dB 001b: -7 dB 010b: -8 dB 011b: -9 dB 100b: -10 dB 101b: -11 dB 110b: -12 dB 111b: reserved
3:0 RW_O 0x8 uptxpreset:
Upstream Component Transmitter Preset
Transmitter Preset for an Upstream Component. The Root Ports are upstream components. The encodings are defined below.
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
Type: CFG PortID: N/A
Bus: 0 Device: 2 Function: 0
Bus: 0 Device: 3 Function: 0
Offset: 0x26c, 0x26e, 0x270, 0x272, 0x274, 0x276, 0x278, 0x27a
Bit Attr Default Description