Intel 925 Data Sheet - Page 155

LE1A-Link Entry 1 Address D1:F0, PEGSSTS-PCI Express*-G Sequence Status D1:F0

Page 155 highlights

Host-PCI Express* Graphics Bridge Registers (D1:F0) R 8.1.58 LE1A-Link Entry 1 Address (D1:F0) PCI Device: Address Offset: Default Value: Access: Size: 1 158h 0000000000000000h R/WO 64 bits This register provides the second part of a Link Entry that declares an internal link to another Root Complex Element. Bit 63:32 31:12 11:0 Access & Default R/WO 0 0000h Description Reserved Link Address: This field indicates memory-mapped base address of the RCRB that is the target element (Egress Port) for this link entry. Reserved 8.1.59 PEGSSTS-PCI Express*-G Sequence Status (D1:F0) PCI Device: Address Offset: Default Value: Access: Size: 1 218h 0000000000000FFFh RO 64 bits This register provides PCI Express status reporting that is required by the PCI Express specification. Bit 63:60 59:48 47:44 43:32 31:28 27:16 15:12 11:0 Access & Default Description RO 000h RO 000h RO 000h RO FFFh Reserved Next Transmit Sequence Number: Value of the NXT_TRANS_SEQ counter. This counter represents the transmit Sequence number to be applied to the next TLP to be transmitted onto the Link for the first time. Reserved Next Packet Sequence Number: Packet sequence number to be applied to the next TLP to be transmitted or re-transmitted onto the Link. Reserved Next Receive Sequence Number: This is the sequence number associated with the TLP that is expected to be received next. Reserved Last Acknowledged Sequence Number: This is the sequence number associated with the last acknowledged TLP. § Intel® 82925X/82925XE MCH Datasheet 155

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218
  • 219
  • 220
  • 221
  • 222
  • 223
  • 224
  • 225
  • 226
  • 227
  • 228
  • 229
  • 230
  • 231
  • 232
  • 233
  • 234
  • 235
  • 236
  • 237
  • 238
  • 239
  • 240
  • 241
  • 242

Host-PCI Express* Graphics Bridge Registers (D1:F0)
R
Intel
®
82925X/82925XE MCH Datasheet
155
8.1.58
LE1A—Link Entry 1 Address (D1:F0)
PCI Device:
1
Address Offset:
158h
Default Value:
0000000000000000h
Access:
R/WO
Size:
64 bits
This register provides the second part of a Link Entry that declares an internal link to another
Root Complex Element.
Bit
Access &
Default
Description
63:32
Reserved
31:12
R/WO
0 0000h
Link Address:
This field indicates memory-mapped base address of the RCRB
that is the target element (Egress Port) for this link entry.
11:0
Reserved
8.1.59
PEGSSTS—PCI Express*-G Sequence Status (D1:F0)
PCI Device:
1
Address Offset:
218h
Default Value:
0000000000000FFFh
Access:
RO
Size:
64 bits
This register provides PCI Express status reporting that is required by the PCI Express
specification.
Bit
Access &
Default
Description
63:60
Reserved
59:48
RO
000h
Next Transmit Sequence Number:
Value of the NXT_TRANS_SEQ counter.
This counter represents the transmit Sequence number to be applied to the next
TLP to be transmitted onto the Link for the first time.
47:44
Reserved
43:32
RO
000h
Next Packet Sequence Number:
Packet sequence number to be applied to the
next TLP to be transmitted or re-transmitted onto the Link.
31:28
Reserved
27:16
RO
000h
Next Receive Sequence Number:
This is the sequence number associated with
the TLP that is expected to be received next.
15:12
Reserved
11:0
RO
FFFh
Last Acknowledged Sequence Number:
This is the sequence number
associated with the last acknowledged TLP.
§