RG82845G S L66F Intel, RG82845G S L66F Datasheet - Page 86
RG82845G S L66F
Manufacturer Part Number
RG82845G S L66F
Description
Manufacturer
Intel
Datasheet
1.RG82845G_S_L66F.pdf
(193 pages)
Specifications of RG82845G S L66F
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Register Description
3.5.2.16
86
SSTS1—Secondary Status Register (Device 1)
Address Offset:
Default Value:
Access:
Size:
SSTS1 is a 16-bit status register that reports the occurrence of error conditions associated with
secondary side (i.e., PCI_B/AGP side) of the “virtual” PCI-to-PCI bridge embedded within the
GMCH.
10:9
Bit
4:0
15
14
13
12
11
8
7
6
5
Detected Parity Error (DPE)—R/WC.
0 = Software sets DPE1 to 0 by writing a 1 to this bit.
1 = Indicates GMCH’s detection of a parity error in the address or data phase of PCI_B/AGP bus
Received System Error (RSE)—RO. Hardwired to 0. GMCH does not have an SERR# signal pin on
the AGP interface.
Received Master Abort Status (RMAS)—R/WC.
0 = Software resets this bit to 0 by writing a 1 to it.
1 = GMCH terminated a Host-to-PCI_B/AGP with an unexpected master abort.
Received Target Abort Status (RTAS)—R/WC.
0 = Software resets RTAS1 to 0 by writing a 1 to it.
1 = GMCH-initiated transaction on PCI_B/AGP is terminated with a target abort.
Signaled Target Abort Status (STAS)—RO. Hardwired to a 0. GMCH does not generate target
abort on PCI_B/AGP.
DEVSEL# Timing (DEVT)—RO. Hardwired to a 00. This field indicates the timing of the DEVSEL#
signal when the GMCH responds as a target on PCI_B/AGP. It is hardwired to 01b (medium) to
indicate the time when a valid DEVSEL# can be sampled by the initiator of the PCI cycle.
Master Data Parity Error Detected (DPD)—RO. Hardwired to 0. GMCH does not implement
G_PERR# signal on PCI_B.
Fast Back-to-Back (FB2B)—RO. Hardwired to 1. GMCH, as a target, supports fast back-to-back
transactions on PCI_B/AGP.
Reserved.
66/60 MHz Capability (CAP66)—RO. Hardwired to 1. Indicates that the AGP/PCI_B bus is capable
of 66 MHz operation.
Reserved.
transactions.
1Eh
02A0h
RO, R/WC
16 bits
Intel
Description
®
82845G/82845GL/82845GV GMCH Datasheet
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