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Intel
®
E8870 Scalable Node Controller (SNC) Datasheet 3-5
Configuration Registers
3.5.2 DID: Device Identification Register
This register combined with the Vendor Identification register uniquely identifies the SNC. Writes
to this register have no effect.
3.5.3 CCR: Class Code Register
This register contains the Class Code for the SNC, specifying the device function.
Device: NodeID
Function: 0,1,2,3
Offset: 02 - 03h
Bit Attr Default Description
15:0 RO
Fixed Value
(see Description)
Device Identification Number
Identifies each function of the SNC.
0500h: SNC Function0
0501h: SNC Function1
0502h: SNC Function2
0503h: SNC Function3
0508h: Reserved
0509h: Reserved
050Ah: Reserved
050Bh: Reserved
Device: NodeID
Function: 0,1,2,3
Offset: 09-0Bh
Bit Attr Default Description
23:16 RO 06h
Base Class
This field indicates the general device category. For the SNC, this field is
hardwired to 06h, indicating it is a “Bridge Device.”
15:8 RO 0
Sub-Class
This field qualifies the Base Class, providing a more detailed
specification of the device function. For the SNC, this field is hardwired
to 00h, indicating it is a “Host Bridge.”
7:0 RO 0
Register-Level Programming Interface
This field identifies a specific programming interface that device
independent software can use to interact with the device. There is no
such interfaces defined for host bridge, and this field is hardwired to 00h.
- (SNC) Datasheet 1
- Contents 3
- Introduction 1 11
- Introduction 12
- Figure 1-1. Typical Itanium 12
- 2-Based Server Configuration 12
- 1.3 Architectural Overview 13
- 1.4 Interfaces 14
- 1.4.5 JTAG Interface 15
- 1.5 Terminology 16
- 1.6 References 18
- 1.7 Revision History 18
- Signal Description 2 19
- 2.2 SNC Signal List 20
- Signal Description 21
- Configuration Registers 3 31
- 3.2.3 BOFLA: Boot Flag Alias 32
- 3.3 SNC I/O Space Registers 33
- 3.5 PCI Standard Registers 34
- Configuration Registers 35
- 3.6 Address Mapping Registers 37
- 3-8 Intel 38
- • A[43:26] == BASE 40
- : 5C - 5Fh 41
- 3-12 Intel 42
- 3-14 Intel 44
- 3-18 Intel 48
- Table 3-6. DDR IOP Decodes 51
- 3-22 Intel 52
- 3.8.1 SYRE: System Reset 53
- 3-24 Intel 54
- 44h (Continued) 55
- 3.8.4 SPAD: Scratch Pad 56
- 3.8.6 BOFL: Boot Flag 57
- 3.9 Error Registers 63
- 3.9.4 ERRMASK: ERRST MASK 68
- Processor Bus 69
- : 40h(31:0), 44h(63:32) 71
- : 48h(31:0), 4Ch(63:32) 71
- 3-42 Intel 72
- : E0h(31:0), E4h(63:32) 73
- 3-44 Intel 74
- 3.10.2 PTCTL: Timer Control 76
- 3-48 Intel 78
- Response 79
- Events LO 82
- Events HI 83
- Resource Events 84
- : E8h (SPPMD0), F8h (SPPMD1) 87
- : E4h (SPPMC0), F4h (SPPMC1) 87
- 3-60 Intel 90
- 3.10.18 HPDATA: Hot Page Data 93
- 3-64 Intel 94
- System Address Map 4 97
- 4.1.1 Compatibility Region 98
- 4.1.1.1 DOS Region 98
- 4.1.1.2 VGA Memory Range 98
- 4.1.1.3 MDA Memory Range 98
- 4.1.1.4 C and D Segments 98
- 4.1.2 System Region 99
- 4.1.2.1 Local Firmware Range 99
- 4-4 Intel 100
- System Address Map 102
- Local Firmware Disabled 102
- 4.1.5 Main Memory Region 104
- 4.1.5.3.3 Node Interleaving 105
- 4.1.5.3.4 Limitations 105
- 4-10 Intel 106
- 4.2.1.2 SPS Registers 108
- 4.2.1.1 SNC Registers 108
- 4.2.1.3 SIOH Registers 109
- 4-14 Intel 110
- Table 4-7. Intel 112
- 4.3 I/O Address Map 114
- 4.3.2 Outbound I/O Access 115
- 4.3.2.1 Outbound I/Os 115
- 4.4 Configuration Space 116
- 4.5 Illegal Addresses 117
- Memory Subsystem 5 119
- 5.1.2 Reads 120
- 5.1.3 Writes 121
- 5.2 Error Correction 122
- 5.2.3 Software Scrubs 123
- Memory Subsystem 124
- 5.2.5.1 FRU Isolation 126
- 5.2.6 Memory Test 126
- 5.3 DDR Organization 127
- 5.3.2 DDR Features Supported 128
- 5-12 Intel 130
- 5.3.3 Power Management 132
- Serviceability 6 135
- Table 6-1. Intel 136
- E8870 Chipset Errors 136
- • Memory: 139
- • Configuration Registers: 139
- 6.1.2 Data Poisoning 140
- 6.1.3 Error Reporting 140
- 6.1.4 Interface Details 141
- 6.1.5 Time-Out 142
- Responsibilities 143
- 6.2.2 Server Management (SM) 144
- 6.2.3 OS/System Software 144
- 6.2.4 Device Driver 144
- 6.3 Availability 145
- 6.4 Hot-Plug 146
- 6.5 Chipset Error Record 147
- 6-14 Intel 148
- • Non-continuable (NC) 149
- • Continuable Single (CS) 149
- • Continuable Trailing (CT) 149
- 6-16 Intel 150
- 6-18 Intel 152
- 6.5.4 ESP Error Logs 154
- 6-22 Intel 156
- Clocking 7 157
- Clocking 158
- 7-4 Intel 160
- 7.8 JTAG 161
- 7.9 SMBus Clocking 161
- 7.11 Analog Power Supply Pins 161
- System Reset 8 163
- 8.2 Reset Sequences 164
- 8.2.1 Power-up Reset Sequence 165
- System Reset 166
- 8.2.1.1 PWRGOOD Deassertion 167
- 8-6 Intel 168
- 8.2.2 Hard Reset 169
- 8-8 Intel 170
- Incomplete 171
- Initialization 171
- Complete Initialization 171
- 50 System Clocks 171
- 8-10 Intel 172
- 8.2.2.7 Local Resets 173
- 8.3 Reset Signals 174
- 8.3.1 ICH4: PWROK 175
- 8.3.3 SIOH: DET 175
- 8.3.4 ICH4: PCIRST# 175
- 8-16 Intel 178
- Electrical Specifications 9 179
- 9.3.1 Overview 180
- 9.3.2 Signal Group 181
- 9.3.3 DC Specifications 182
- 9.5 Main Channel Interface 183
- 9.5.2 DC Specifications 184
- 9.5.3 AC Specifications 184
- 9.6 LPC Signal Group 185
- 9.7.1 DC Specifications 186
- 9.7.2 AC Specifications 187
- 9.7.3 AC Timing Waveforms 188
- 9.8.1 Signal Groups 189
- 9.8.2 DC Characteristics 190
- 9.8.3 AC Specification 191
- Electrical Specifications 192
- 9.9 Clock Signal Groups 193
- 9-16 Intel 194
- 10-2 Intel 196
- 10.2 Ball-out Specifications 197
- Table 10-1. SNC Ball List 198
- 10-6 Intel 200
- 10-8 Intel 202
- 10-10 Intel 204
- 10-12 Intel 206
- 10-14 Intel 208
- 10-16 Intel 210
- 10-18 Intel 212
- 10-20 Intel 214
- 10-22 Intel 216
- 10-24 Intel 218
- 10-26 Intel 220
- 10-28 Intel 222
- 10-30 Intel 224
- 10-32 Intel 226
- 10-34 Intel 228
- 10-36 Intel 230
- 10-38 Intel 232
- Testability 11 233
- 11.2 Public TAP Instructions 236
- 11.4 TAP registers 237
- 11-6 Intel 238
- Testability 239
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