Intel 6 SERIES CHIPSET - DATASHEET 01-2011

Datasheet 741
SMBus Controller Registers (D31:F3)
18.1.4 PCISTS—PCI Status Register (SMBus—D31:F3)
Address: 06h–07h Attributes: RO
Default Value: 0280h Size: 16 bits
Note: For the writable bits, software must write a 1 to clear bits that are set. Writing a 0 to
the bit has no effect.
18.1.5 RID—Revision Identification Register (SMBus—D31:F3)
Offset Address: 08h Attribute: RO
Default Value: See bit description Size: 8 bits
Bit Description
15
Detected Parity Error (DPE) — R/WC.
0 = No parity error detected.
1 = Parity error detected.
14
Signaled System Error (SSE) — R/WC.
0 = No system error detected.
1 = System error detected.
13 Received Master Abort (RMA) — RO. Hardwired to 0.
12 Received Target Abort (RTA) — RO. Hardwired to 0.
11 Signaled Target Abort (STA) — RO. Hardwired to 0.
10:9
DEVSEL# Timing Status (DEVT) — RO. This 2-bit field defines the timing for
DEVSEL# assertion for positive decode.
01 = Medium timing.
8 Data Parity Error Detected (DPED) — RO. Hardwired to 0.
7 Fast Back to Back Capable (FB2BC) — RO. Hardwired to 1.
6 User Definable Features (UDF) — RO. Hardwired to 0.
5 66 MHz Capable (66MHZ_CAP) — RO. Hardwired to 0.
4
Capabilities List (CAP_LIST) — RO. Hardwired to 0 because there are no capability list
structures in this function
3
Interrupt Status (INTS) — RO. This bit indicates that an interrupt is pending. It is
independent from the state of the Interrupt Enable bit in the PCI Command register.
2:0 Reserved
Bit Description
7:0
Revision ID — RO. See the Intel
®
6 Series Chipset Specification Update for the value
of the RID Register.