Intel i7-2600 CM8062300834302S User Manual

178

Datasheet, Volume 2

7:6

RO

00b

Uncore

Reserved for Attention Indicator Control (AIC)
If an Attention Indicator is implemented, writes to this field set the 

Attention Indicator to the written state. Reads of this field must 

reflect the value from the latest write, even if the corresponding 

hot-plug command is not complete, unless software issues a write 

without waiting for the previous command to complete in which 

case the read value is undefined. If the indicator is electrically 

controlled by chassis, the indicator is controlled directly by the 

downstream port through implementation specific mechanisms. 
00 = Reserved
01 = On
10 = Blink
11 = Off
If the Attention Indicator Present bit in the Slot Capabilities 

register is 0b, this field is permitted to be read only with a value of 

00b.

5

RO

0b

Uncore

Reserved for Hot-plug Interrupt Enable (HPIE)
When set to 1b, this bit enables generation of an interrupt on 

enabled hot-plug events. The Reset Value of this field is 0b. If the 

Hot Plug Capable field in the Slot Capabilities register is set to 0b, 

this bit is permitted to be read only with a value of 0b.

4

RO

0b

Uncore

Reserved for Command Completed Interrupt Enable (CCI)
If Command Completed notification is supported (as indicated by 

No Command Completed Support field of Slot Capabilities 

Register), when set to 1b, this bit enables software notification 

when a hot-plug command is completed by the Hot-Plug Controller.
If Command Completed notification is not supported, this bit must 

be hardwired to 0b.

3

RO

0b

Uncore

Presence Detect Changed Enable (PDCE)
When set to 1b, this bit enables software notification on a presence 

detect changed event.

2

RO

0b

Uncore

Reserved for MRL Sensor Changed Enable (MSCE)
When set to 1b, this bit enables software notification on a MRL 

sensor changed event.
If the MRL Sensor Present field in the Slot Capabilities register is 

set to 0b, this bit is permitted to be read only with a value of 0b.

1

RO

0b

Uncore

Reserved for Power Fault Detected Enable (PFDE)
When set to 1b, this bit enables software notification on a power 

fault event.
If Power Fault detection is not supported, this bit is permitted to be 

read only with a value of 0b.

0

RO

0b

Uncore

Reserved for Attention Button Pressed Enable (ABPE)
When set to 1b, this bit enables software notification on an 

attention button pressed event.