Zynq UltraScale+ Devices Register Reference > Module Summary > PCIE_ATTRIB Module > ATTR_79 (PCIE_ATTRIB) Register

ATTR_79 (PCIE_ATTRIB) Register

ATTR_79 (PCIE_ATTRIB) Register Description

Register NameATTR_79
Relative Address0x000000013C
Absolute Address 0x00FD48013C (PCIE_ATTRIB)
Width32
TyperwNormal read/write
Reset Value0x00000000
DescriptionATTR_79

This register should only be written to during reset of the PCIe block

ATTR_79 (PCIE_ATTRIB) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
attr_slot_cap_no_cmd_completed_support13rwNormal read/write0x0No Command Completed Support. When TRUE, indicates that Slot doesnt issue SW notification when HotPlug Controller completes command.
Transferred to the Slot Capabilities register.
attr_slot_cap_mrl_sensor_present12rwNormal read/write0x0MRL Sensor Present.
When TRUE, indicates that a MRL (Manually-operated Retention Latch) sensor is implemented on the chassis for this slot.
Transferred to the Slot Capabilities register.
attr_slot_cap_hotplug_surprise11rwNormal read/write0x0Hot-Plug Surprise.
When TRUE, indicates that a device present in this slot might be removed from the system without any prior notification.
Transferred to the Slot Capabilities register.
attr_slot_cap_hotplug_capable10rwNormal read/write0x0Hot-Plug Capable.
When TRUE, indicates that this slot is capable of supporting Hot-Plug operations.
Transferred to the Slot Capabilities register.
attr_slot_cap_elec_interlock_present 9rwNormal read/write0x0Electromechanical Interlock Present. When TRUE, indicates that an Electromechanical Interlock is implemented on the chassis for this slot.
Transferred to the Slot Capabilities register.
attr_slot_cap_att_indicator_present 8rwNormal read/write0x0Attention Indicator Present.
When TRUE, indicates that an Attention Indicator is implemented on the chassis for this slot.
Transferred to the Slot Capabilities register.
attr_slot_cap_att_button_present 7rwNormal read/write0x0Attention Button Present.
When TRUE, indicates that an Attention Button is implemented on the chassis for this slot.
Transferred to the Slot Capabilities register.
Reserved 6rwNormal read/write0x0reserved.
attr_root_cap_crs_sw_visibility 5rwNormal read/write0x0CRS SW Visibility. Indicates RC can return CRS to SW.
Transferred to the Root Capabilities register.
attr_rbar_cap_control_encodedbar5 4:0rwNormal read/write0x0Initial value for the 6th RBAR Control "BAR Size" field (if any). Encoding is 0=1MB, 1=2MB,2=4MB,etc. This value must correspond to the size requested in the attribute BARx (where x is the value of RBAR_CAP_INDEX5). For instance, if RBAR_CAP_INDEX5=3, and BAR3 requests a 16MB aperture, then this attribute must be set to 4 (meaning 16MB).