QG82945GSE S LB2R Intel, QG82945GSE S LB2R Datasheet - Page 259

• Manufacturer Part Number: QG82945GSE S LB2R
• Description: GRAPHICS AND MEM CNTRL HUB; No. of Pins: 998; Package / Case: FCBGA; Interface Type: PCI, SATA, USB
• Manufacturer: Intel

PCI Express Graphics Device 1 Configuration Registers (D1:F0)
7.1.41
Datasheet
SLOTSTS - Slot Status
B/D/F/Type:
Address Offset:
Default Value:
Access:
Size:
PCI Express Slot related registers allow for the support of Hot Plug.
15:7
Bit
6
5
4
3
2
1
0
Access
R/WC
R/WC
R/WC
RO
RO
RO
RO
RO
Default
Value
Strap
000h
0b
0b
0b
0b
0b
0b
Reserved
Presence Detect State (PDS):
Indicates the presence of a card in the slot.
Reserved
Command Completed (CC):
Set when the hot plug controller completes an issued command.
This field applies only to commands/writes issued by software to
control the Attention Indicator or Power Indicator. The command
completed bit will be set when a slot control register write has
occurred and all appropriate indicator messages associated with
that slot control register write have been sent. A command
completed interrupt will only be sent when enabled and the
command completed bit transitions from 0 to 1.
Software must wait for confirmation of command completion
(notification via Command Completed interrupt or polling
Command Completed field) before issuing the next command.
However, if the Command Completed register is not set 1 second
after the command is issued, the host software is allowed to
repeat the command or to issue the next command.
It is a programming error if software issues a write before the
controller has completed processing of the previous command
and before the 1-second time limit has expired.
Presence Detect Changed (PDC):
Set when a Presence Detect change is detected. This corresponds
to an edge on the signal that corresponds to bit 6 of this register
(Presence Detect State).
Reserved
Reserved
Attention Button Pressed (ABP):
Set when the Attention Button is pressed.
0: Slot Empty
1: Card Present in slot.
0/1/0/PCI
BA-BBh
00_0s00_0h
R/WC; RO
16 bits
Description
259