Kontron mITX-BDW-U, Руководство пользователя

Страница: 70 / 105

mITX-BDW-U – User Guide, Rev. 1.6
www.kontron.com // 70
Function Selection Description
PEG ASPM Disabled
L0S
L1
L0S And L1
Auto PEG ASPM Settings.
Program PCIe ASPM later than
OpROM
Disabled
Enabled Enabled: PCIe ASPM will be programmed after
OpROM. Disabled: PCIe ASPM will be programmed
before OpROM
De-emphasis Control -6 dB
-3.5 dB DeEmphasis control for PEG.
Swing Control Reduced
Half
Full Perform PEG Swing Control.
PEG Sample Calibrate Disabled
Enabled
Auto Enable/Disable PEG Sample Calibrate.
Gen3 Equalization Disabled
Enabled Perform PEG Gen3 Equalization steps.
PEG Gen3 Equalization Phase2 Disabled
Enabled Enable/Disable PEG Gen3 Equalization Phase2.
Gen3 Root Port Preset 1, 2, …8, …11 Root Port Preset value for Gen3 Equalization.
Gen3 Endpoint Preset 0, 1, …7, …10 Endpoint Preset value for Gen3 Equalization.
Gen3 Endpoint Hint 0, 1, 2, …10 Endpoint Hint value for Gen3 Equalization.
Gen3 Eq Preset Search Disabled
Enabled Perform PEG Gen3 SW Preset Search algorithm.
Always re-search Gen3 Eq
Preset Disabled
Enabled Always re-search PEG Gen3 Preset even it has been
done once.
Allow PREST# GPIO Usage Disabled
Enabled Enable/Disable GPIO-based resets to PEG
endpoint(s) during margin search, if needed.
Preset Search Dwell Time 0, …1000, …65535 PEG Gen3 Preset Search dwell time in [ms].
Timing Start Margin 4, …15, …255 The starting value [4…255] for the backward margin
search.
Voltage Start Margin 4, …20, …255 The starting value [4…255] for the backward margin
search.
Error Target 0, 1, …65535 The margin search error target value [1 … 65535].
PEG RxCEM Loopback Mode Disabled
Enabled Enable/Disable PEG RxCEM Loopback Mode.
PEG Gen3 RxCTLE Control 0, …8, …255 PEG Gen3 RxCTLE for Bundle0(Lane0, Lane1).
Generate BDAT PEG Margin Data Disabled
Enabled Enable to generate BDAT PCIe margin tables