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PCI Express Non-Transparent Bridge 3.20.3.17 DEVCAP: PCI Express Device Capabilities Register The PCI Express Device Capabilities register identifies device specific information for the device. Register:DEVCAP Bar:PB01BASE + 500h + Offset, SB01BASE + 500h + Offset Bus:M Device:0 Function: 0 Offset:94h Bit Attr Default 31:29 Rsvd P 0h Reserved 28 RO 0b Function Level Reset Capability A value of 1b indicates the Function supports the optional Function Level Reset mechanism. NTB does not support this functionality 0h Captured Slot Power Limit Scale Does not apply to RPs or integrated devices This value is hardwired to 00h NTB is required to be able to receive the Set_Slot_Power_Limit message without error but simply discard the Message value. Note: Components with Endpoint, Switch, or PCI Express-PCI Bridge Functions that are targeted for integration on an adapter where total consumed power is below the lowest limit defined for the targeted form factor are permitted to ignore Set_Slot_Power_Limit Messages, and to return a value of 0 in the Captured Slot Power Limit Value and Scale fields of the Device Capabilities register Captured Slot Power Limit Value Does not apply to RPs or integrated devices This value is hardwired to 00h NTB is required to be able to receive the Set_Slot_Power_Limit message without error but simply discard the Message value. Note: Components with Endpoint, Switch, or PCI Express-PCI Bridge Functions that are targeted for integration on an adapter where total consumed power is below the lowest limit defined for the targeted form factor are permitted to ignore Set_Slot_Power_Limit Messages, and to return a value of 0 in the Captured Slot Power Limit Value and Scale fields of the Device Capabilities register 27:26 RO Description 25:18 RO 00h 17:16 Rsvd P 0h 15 RO 1 Role Based Error Reporting: IIO is 1.1 compliant and so supports this feature 14 RO 0 Power Indicator Present on Device Does not apply to RPs or integrated devices 13 RO 0 Attention Indicator Present Does not apply to RPs or integrated devices 12 RO 0 Attention Button Present Does not apply to RPs or integrated devices February 2010 Order Number: 323103-001 Reserved Intel® Xeon® Processor C5500/C3500 Series Datasheet, Volume 1 261
