Altera Stratix V Avalon-ST Uživatelský manuál Strana 113
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Bit(s) Field Description
[6:4] multiple message
enable
This field indicates permitted values for MSI signals. For example,
if “100” is written to this field 16 MSI signals are allocated.
• 3’b000: 1 MSI allocated
• 3’b001: 2 MSI allocated
• 3’b010: 4 MSI allocated
• 3’b011: 8 MSI allocated
• 3’b100: 16 MSI allocated
• 3’b101: 32 MSI allocated
• 3’b110: Reserved
• 3’b111: Reserved
[3:1]
multiple message
capable
This field is read by system software to determine the number of
requested MSI messages.
• 3’b000: 1 MSI requested
• 3’b001: 2 MSI requested
• 3’b010: 4 MSI requested
• 3’b011: 8 MSI requested
• 3’b100: 16 MSI requested
• 3’b101: 32 MSI requested
• 3’b110: Reserved
[0] MSI Enable If set to 0, this component is not permitted to use MSI.
Related Information
• PCI Express Base Specification 2.1 or 3.0
• PCI Local Bus Specification, Rev. 3.0
Hard IP Reconfiguration Interface
The Hard IP reconfiguration interface is an Avalon-MM slave interface with a 10-bit address and 16-bit
data bus. You can use this bus to dynamically modify the value of configuration registers that are read-
only at run time. To ensure proper system operation, reset or repeat device enumeration of the PCI
Express link after changing the value of read-only configuration registers of the Hard IP.
For an example that illustrates how to use this interface, refer to PCI SIG Gen2 x8 Merged Design - Stratix
V on the Altera wiki. The Related Information section below provides a link to this example.
UG-01097_avst
2014.12.15
Hard IP Reconfiguration Interface
5-61
Interfaces and Signal Descriptions
Altera Corporation
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- User Guide 1
- Datasheet 2
- Features 3
- Interface 4
- Release Information 7
- Device Family Support 7
- UG-01097_avst 10
- 2014.12.15 10
- Debug Features 11
- IP Core Verification 11
- Recommended Speed Grades 12
- • All Development Kits 14
- PCI Express 15
- Qsys Design Flow 16
- Generating the Testbench 17
- Simulating the Example Design 18
- Directory Description 19
- Time TLP Type Payload 19
- TLP Header 19
- Modifying the Example Design 23
- Separate Component 24
- Generating the Qsys System 27
- Parameter Value 28
- Parameter Settings 38
- Parameter Value Description 39
- Device Capabilities 45
- Error Reporting 47
- Link Capabilities 48
- MSI and MSI-X Capabilities 49
- Slot Capabilities 50
- Power Management 51
- PHY Characteristics 52
- Avalon‑ST RX Interface 54
- Packet TLP 59
- Aligned Addresses 64
- Single Packet Per Cycle 67
- Avalon-ST TX Interface 70
- Data 0 Header 2 83
- Clock Signals 85
- ECRC Forwarding 90
- Error Signals 90
- Interrupts for Endpoints 91
- Completion Side Band Signals 93
- Signal Directi 94
- Description 94
- Related Information 101
- Parity Signals 102
- LMI Signals 103
- Signal Direction Description 104
- Altera Corporation 107
- Send Feedback 107
- Field and Bit Map 112
- 0134678951 112
- Bit(s) Field Description 113
- Power Management Signals 115
- 15 011623 8 2791213142431 117
- Transceiver Reconfiguration 118
- Serial Data Signals 119
- PIPE Interface Signals 123
- Test Signals 128
- Registers 129
- Altera-Defined VSEC Registers 137
- CvP Registers 138
- 2014.08.18 139
- Bits Register Description 142
- Reset and Clocks 145
- Example Design 146
- Hard IP for PCI Express 146
- Clock Domains 149
- Data Rate Frequency 150
- Clock Summary 152
- Interrupts 153
- MSI Interrupts 154
- Allocated 155
- Implementing MSI-X Interrupts 156
- Legacy Interrupts 158
- Interrupts for Root Ports 159
- Error Handling 160
- Physical Layer Errors 161
- Data Link Layer Errors 161
- Transaction Layer Errors 162
- Error Type Description 163
- Status Bit Conditions 166
- IP Core Architecture 168
- Hard IP for PCI Express 169
- Top-Level Interfaces 170
- Avalon-ST Interface 170
- Clocks and Reset 171
- Hard IP Reconfiguration 171
- Transaction Layer 172
- Configuration Space 173
- (Soft Logic) 175
- Altera FPGA 175
- Protocol Extensions Supported 179
- Data Link Layer 179
- Physical Layer 181
- TX Packets 182
- Supported Message Types 184
- INTX Messages 184
- Power Management Messages 185
- Error Signaling Messages 186
- Locked Transaction Message 187
- Slot Power Limit Message 187
- Vendor-Defined Messages 187
- Hot Plug Messages 188
- Receive Buffer Reordering 190
- Using Relaxed Ordering 192
- Throughput Optimization 195
- Throughput of Posted Writes 197
- Design Implementation 199
- CONF_DONE 200
- Endpoint Reset 200
- Root Port Reset 200
- SDC Timing Constraints 201
- Optional Features 203
- ECRC on the RX Path 204
- ECRC on the TX Path 205
- Subscribe 208
- Testbench and Design Example 212
- Root Port Testbench 215
- Chaining DMA Design Examples 215
- Root Complex 217
- Chaining DMA 217
- Hard IP for 217
- BAR/Address Map 220
- Memory BAR Mapping 221
- Bit Field Description 222
- Addr Register Name 222
- Offset to Base 225
- Descriptor Type Description 225
- Byte Address 225
- Bits[21:18] Bit[17] Bit[16] 226
- Descriptor Field Endpoint 226
- RC Access Description 226
- Test Driver Module 227
- DMA Write Cycles 228
- Shared Memory 229
- DMA Read Cycles 230
- Registers (BAR2) 231
- Root Port Design Example 232
- Root Port 233
- Variation 233
- (variation_name.v) 233
- Root Port BFM 234
- BFM Configuration Procedures 235
- BFM Request Interface 235
- BFM Memory Map 236
- Offset (Bytes) Description 238
- BFM Procedures and Functions 242
- Location altpcietb_bfm_rdwr.v 243
- Express address 244
- Shared Memory Constants 251
- Constant Description 252
- Location 257
- Debugging Simulations 269
- Debugging 270
- Setting Up Simulation 276
- Use Third-Party PCIe Analyzer 277
- BIOS Enumeration Issues 277
- Address[31:2] 278
- Figure A-6: I/O Read Request 280
- 7 6 5 4 3 2 1 0 284
- Core Config 8 4 1 284
- Additional Information 286
- Date Version Changes Made 287
- How to Contact Altera 290
- Typographic Conventions 291
- Visual Cue Meaning 292
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