Intel B940 Scheda Tecnica Pagina 48
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Processor Configuration Registers
48 Datasheet, Volume 2
2.7.4 PCISTS—PCI Status Register
This status register reports the occurrence of error events on Device 0's PCI interface.
Since the processor Device 0 does not physically reside on PCI_A, many of the bits are
not implemented.
B/D/F/Type: 0/0/0/PCI
Address Offset: 6–7h
Reset Value: 0090h
Access: RW1C, RO
Bit Attr
Reset
Value
Description
15 RW1C 0b
Detected Parity Error (DPE)
This bit is set when this device receives a Poisoned TLP.
14 RW1C 0b
Signaled System Error (SSE)
This bit is set to 1 when the processor Device 0 generates an SERR message
over DMI for any enabled Device 0 error condition. Device 0 error conditions
are enabled in the PCICMD, ERRCMD, and DMIUEMSK registers. Device 0
error flags are read/reset from the PCISTS, ERRSTS, or DMIUEST registers.
Software clears this bit by writing a 1 to it.
13 RW1C 0b
Received Master Abort Status (RMAS)
This bit is set when the processor generates a DMI request that receives an
Unsupported Request completion packet. Software clears this bit by writing a
1 to it.
12 RW1C 0b
Received Target Abort Status (RTAS)
This bit is set when the processor generates a DMI request that receives a
Completer Abort completion packet. Software clears this bit by writing a 1 to
it.
11 RO 0b
Signaled Target Abort Status (STAS)
The processor will not generate a Target Abort DMI completion packet or
Special Cycle. This bit is not implemented in the processor and is hardwired
to a 0. Writes to this bit position have no effect.
10:9 RO 00b
DEVSEL Timing (DEVT)
These bits are hardwired to "00". Writes to these bit positions have no affect.
Device 0 does not physically connect to PCI_A. These bits are set to "00"
(fast decode) so that optimum DEVSEL timing for PCI_A is not limited by the
processor.
8RW1C 0b
Master Data Parity Error Detected (DPD)
This bit is set when DMI received a Poisoned completion from PCH.
This bit can only be set when the Parity Error Enable bit in the PCI Command
register is set.
7RO 1b
Fast Back-to-Back (FB2B)
This bit is hardwired to 1. Writes to these bit positions have no effect. Device
0 does not physically connect to PCI_A. This bit is set to 1 (indicating fast
back-to-back capability) so that the optimum setting for PCI_A is not limited
by the processor.
6RO 0bReserved
5RO 0b
66 MHz Capable (66MC)
Does not apply to PCI Express. Must be hardwired to 0.
4RO 1b
Capability List (CLIST)
This bit is hardwired to 1 to indicate to the configuration software that this
device/function implements a list of new capabilities. A list of new capabilities
is accessed using register CAPPTR at configuration address offset 34h.
Register CAPPTR contains an offset pointing to the start address within
configuration space of this device where the Capability Identification register
resides.
3RO 0bReserved
2:0 RO 000b Reserved
- Datasheet – Volume 2 1
- Legal Lines and Disclaimers 2
- Contents 3
- 4 Datasheet, Volume 2 4
- Datasheet, Volume 2 5 5
- 6 Datasheet, Volume 2 6
- Datasheet, Volume 2 7 7
- 8 Datasheet, Volume 2 8
- Datasheet, Volume 2 9 9
- 10 Datasheet, Volume 2 10
- Datasheet, Volume 2 11 11
- Revision History 12
- 1 Introduction 13
- Introduction 14
- 2 Processor Configuration 15
- 2.2 System Address Map 17
- 18 Datasheet, Volume 2 18
- 2.2.1 Legacy Address Range 19
- Datasheet, Volume 2 21 21
- 2.2.2.2 TSEG 22
- 2.2.2.5 Pre-allocated Memory 23
- 2.2.2.7 Intel 24
- Management Engine (Intel 24
- ME) UMA 24
- Datasheet, Volume 2 25 25
- 2.2.2.10 High BIOS Area 26
- Datasheet, Volume 2 27 27
- 2.2.3.1 Programming Model 28
- HOST/SYSTEM VIEW 29
- PHYSICAL MEMORY 29
- (DRAM CONTROLLER VIEW) 29
- Datasheet, Volume 2 33 33
- 34 Datasheet, Volume 2 34
- 2.2.9 I/O Address Space 35
- 36 Datasheet, Volume 2 36
- Datasheet, Volume 2 37 37
- 2.4 Configuration Mechanisms 38
- Datasheet, Volume 2 39 39
- 40 Datasheet, Volume 2 40
- Datasheet, Volume 2 41 41
- 42 Datasheet, Volume 2 42
- Datasheet, Volume 2 43 43
- 2.6 I/O Mapped Registers 44
- 2.7.6 CC—Class Code Register 49
- TXT Lockable 54
- 1:0 to 11b 56
- 4) from 58
- B0h, bits 15:4) 58
- 2.8 MCHBAR Registers 66
- 00h RW 67
- Register Symbol Register Name 67
- 208–209h 73
- 20A–20Bh 74
- 24D–24Fh 74
- 250-251h 75
- 252–255h 76
- 256–257h 77
- 258–25Ah 77
- 269–26Eh 79
- 298–29Bh 82
- 29C–29Fh 84
- 2B4–2B7h 84
- 600–601h 86
- 602–603h 86
- 604–605h 86
- 64D–64Fh 88
- 650–651h 88
- 652–655h 89
- 656–657h 90
- 658–65Ah 90
- 660–663h 91
- 6B4–6B7h 93
- C20–C27h 94
- 1001–1002h 94
- 1004–1005h 95
- 101E–101Fh 100
- Register 107
- 10EC–10EDh 108
- 2C20–2C22h 109
- 2.9 EPBAR Registers 110
- 2.10 PCI Device 1 Registers 115
- PCI device 117
- Port Command Register 140
- 11:10 RW-O 11b 143
- OS's during run time 155
- 104–107h 156
- 108–10Bh 157
- 10C–10Dh 157
- 110–113h 158
- 23 RO 0b Reserved 158
- 114–117h 158
- 11A–11Bh 159
- 2.12 DMIBAR Registers 161
- Declaration Capability 169
- 2.13.6 CC—Class Code Register 177
- Range Address Register 179
- GMADR register 180
- 2.14 Device 2 I/O Registers 183
- 100–107h 211
- 108–10Fh 212
- 200–20Fh 214
- F00–F03h 215
- F04–F07h 216
- Dedication 217
- F08–F0Bh 218
- FFC–FFFh 219
- 2.16 DMI VC1 REMAP Registers 221
- 2.17.2 GFXPLL1—GFX PLL BIOS 254
- 2.18 GFXVTBAR Registers 255
- Address Register 281
- 2.19 PCI Device 6 Registers 288
- 2.19.45 RSTS—Root Status 327
- 2.21 Intel 332
- Specific Registers 332
- 110–117h 333
- 330–337h 333
- Lower Half Register 334
- Upper Half Register 334
- QuickPath Architecture 335
- System Address Decode 335
- Register Description 335
- QPI Link 0 Registers 340
- QPI Physical 0 Registers 341
- 3.4 PCI Standard Registers 342
- 3.4.4 CCR—Class Code Register 344
- Identification Register 345
- 3.4.7 PCICMD—Command Register 346
- 3.5.1 MAX_RTIDS 349
- 3.6.1 SAD_PAM0123 349
- 3.6.2 SAD_PAM456 351
- 3.6.3 SAD_HEN 352
- 3.6.4 SAD_SMRAM 353
- 3.6.5 SAD_PCIEXBAR 354
- 3.7 Intel 356
- QPI Link Registers 356
- 3.8 Intel 357
- QPI Physical Layer Registers 357
- 360 Datasheet, Volume 2 360
Prodotti e manuali riguardandi Processori Intel B940
Processori Intel core 2 Duo T5850 Specifiche
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