82801FB Datasheet, PDF (695/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

PCI Express* Configuration Registers
19.1.30
SLCAP—Slot Capabilities Register
(PCI Express—D28:F0/F1/F2/F3)
Address Offset: 54–57h
Default Value: 00000060h
Attribute:
Size:
R/WO, RO
32 bits
Bit
Description
31:19
18:17
16:15
14:7
6
5
4
3
2
1
0
Physical Slot Number (PSN) — R/WO. This is a value that is unique to the slot number. BIOS sets
this field and it remains set until a platform reset.
Reserved
Slot Power Limit Scale (SLS) — R/WO. This field specifies the scale used for the slot power limit
value. BIOS sets this field and it remains set until a platform reset.
Slot Power Limit Value (SLV) — R/WO. This field specifies the upper limit (in conjunction with SLS
value), on the upper limit on power supplied by the slot. The two values together indicate the amount
of power in watts allowed for the slot. BIOS sets this field and it remains set until a platform reset.
Hot Plug Capable (HPC) — RO.
1b = Indicates that Hot-Plug is supported.
Hot Plug Surprise (HPS) — RO.
1b = Indicates the device may be removed from the slot without prior notification.
Power Indicator Present (PIP) — RO.
0b = Indicates that a power indicator LED is not present for this slot.
Attention Indicator Present (AIP) — RO.
0b = Indicates that an attention indicator LED is not present for this slot.
MRL Sensor Present (MSP) — RO.
0b = Indicates that an MRL sensor is not present.
Power Controller Present (PCP) — RO.
0b = Indicates that a power controller is not implemented for this slot.
Attention Button Present (ABP) — RO.
0b = Indicates that an attention button is not implemented for this slot.
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet
695