Altera Arria V Hard IP for PCI Express Instrukcja Użytkownika Strona 109
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Chapter 7: IP Core Interfaces 7–11
Arria V Hard IP for PCI Express
December 2013 Altera Corporation Arria V Hard IP for PCI Express
User Guide
Figure 7–9 illustrates back-to-back transmission on the 64-bit Avalon-ST RX interface
with no idle cycles between the assertion of
rx_st_eop
and
rx_st_sop
.
Data Alignment and Timing for the 128-Bit Avalon-ST RX Interface
Figure 7–10 shows the mapping of 128-bit Avalon-ST RX packets to PCI Express TLPs
for TLPs with a three dword header and qword aligned addresses.
Figure 7–9. 64-Bit Avalon-ST Interface Back-to-Back Receive TLPs
coreclkout
rx_st_data[63:0]
rx_st_sop
rx_st_eop
rx_st_empty
rx_st_ready
rx_st_valid
C. C. C. C. CCCC008347890. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C.
C. C.
Figure 7–10. 128-Bit Avalon-ST rx_st_data<n> Cycle Definition for 3-Dword Header TLP with Qword Aligned Address
coreclkout
rx_st_valid
rx_st_data[127:96]
rx_st_data[95:64]
rx_st_data[63:32]
rx_st_data[31:0]
rx_st_bar[7:0]
rx_st_sop
rx_st_eop
rx_st_empty
data3
header2 data2
header1 data1 data<n>
header0 data0 data<n-1>
01
- User Guide 1
- Contents 3
- Chapter 7. IP Core Interfaces 5
- Chapter 9. Reset and Clocks 5
- Chapter 18. Debugging 8
- 1. Datasheet 9
- 1–2 Chapter 1: Datasheet 10
- Features 10
- Notes to Table 1–1: 11
- Release Information 12
- Device Family Support 12
- Configurations 12
- Debug Features 13
- IP Core Verification 14
- Recommended Speed Grades 15
- 1–8 Chapter 1: Datasheet 16
- Qsys Design Flow 25
- Generating the Testbench 26
- Modifying the Example Design 34
- Running Qsys 36
- Table 3–5 38
- On Chip r 40
- Simulating the Example Design 44
- Direct BFM’s shared memory 47
- {*reconfig_xcvr_clk*} 50
- Compiling the Design 51
- Programming a Device 51
- System Settings 54
- Port Functions 55
- Error Reporting 57
- 31 19 18 17 16 15 14 58
- Power Management 59
- Legacy Interrupt 63
- Base Address Registers 66
- PCI Express/PCI Capabilities 67
- Header 68
- 6. IP Core Architecture 75
- Avalon-ST Interface 77
- RX Datapath 77
- TX Datapath 77
- Altera FPGA 77
- Clocks and Reset 78
- Interrupts 79
- Transaction Layer 79
- Protocol Layers 80
- Configuration Space 81
- Data Link Layer 81
- Figure 6–4. Data Link Layer 82
- Physical Layer 83
- Figure 6–5. Physical Layer 84
- Multi-Function Support 86
- PCI Express Avalon-MM Bridge 86
- Avalon-MM Bridge TLPs 88
- Figure 6–9. Poor Address Map 93
- RX Block 97
- Avalon-MM RX Master Block 97
- TX Block 98
- Interrupt Handler Block 98
- 7. IP Core Interfaces 99
- Note to Table 7–1: 100
- RX Port 101
- Avalon-ST RX Interface 103
- Note to Figure 7–7: 108
- Avalon-ST TX Interface 113
- Note to Table 7–4: 116
- ECRC Forwarding 121
- Clock Signals 121
- Reset Signals 122
- and the LTSSM L0 state 124
- ECC Error Signals 125
- Interrupts for Endpoints 125
- Interrupts for Root Ports 126
- Completion Side Band Signals 126
- Specification, Rev. 2.1 128
- D E F 0 1 2 3 131
- Notes to Table 7–13: 132
- LMI Signals 136
- LMI Read Operation 137
- LMI Write Operation 137
- Power Management Signals 138
- (Full-Featured Qsys) 140
- Completer-Only Single DWord 141
- RX Avalon-MM Master Signals 143
- Transceiver Reconfiguration 145
- Serial Interface Signals 145
- PIPE Interface Signals 149
- Test Signals 153
- Notes to Table 7–27: 154
- 8. Register Descriptions 155
- Note to Table 8–2: 156
- Note to Table 8–3: 157
- Note to Table 8–4: 157
- Note to Table 8–5: 157
- Note to Table 8–6: 158
- Note to Table 8–7: 158
- Note to Table 8–8: 159
- PCI Express Mailbox Registers 167
- Note to Table 8–30: 168
- Root Port TLP Data Registers 170
- Sending a TLP 173
- Receiving a Completion TLP 173
- Endpoints 174
- Avalon-MM Mailbox Registers 175
- Spec 2.1 176
- 9. Reset and Clocks 181
- Example Design 182
- Hard IP for PCI Express 182
- 127 cycles 184
- ±300 PPM 185
- Note to Table 9–2: 186
- Transceiver Clock Signals 187
- Supported Message Types 189
- Notes to Table 10–1: 191
- Receive Buffer Reordering 192
- Notes to Table 10–2: 193
- MSI Interrupts 195
- 11–2 Chapter 11: Interrupts 196
- Note to Figure 11–4: 197
- Legacy Interrupts 198
- Application Layer 199
- 11–6 Chapter 11: Interrupts 200
- MSI/MSI-X Support 201
- Qsys System 202
- 12. Optional Features 203
- ECRC on the RX Path 204
- ECRC on the TX Path 205
- 13. Flow Control 207
- 13–2 Chapter 13: Flow Control 208
- Throughput of Posted Writes 208
- Chapter 13: Flow Control 13–3 209
- 13–4 Chapter 13: Flow Control 210
- 14. Error Handling 211
- Physical Layer Errors 212
- Data Link Layer Errors 212
- Transaction Layer Errors 213
- Note to Table 14–4: 215
- Figure 15–2 218
- Core User Guide 219
- 16. SDC Timing Constraints 221
- Endpoint Testbench 224
- Root Port Testbench 225
- Chaining DMA Design Examples 226
- Root Complex 227
- Chaining DMA 227
- Hard IP for 227
- PCI Express 227
- Note to Table 17–2: 232
- Note to Table 17–4: 233
- Test Driver Module 236
- DMA Write Cycles 237
- DMA Read Cycles 239
- Root Port Design Example 240
- Root Port 241
- Variation 241
- (variation_name.v) 241
- Root Port BFM 242
- BFM Memory Map 244
- Figure 17–6 248
- BFM Read and Write Procedures 250
- BFM Procedures and Functions 251
- BFM Configuration Procedures 256
- Shared Memory Constants 257
- 18. Debugging 271
- 18–2 Chapter 18: Debugging 272
- Link Training 272
- Chapter 18: Debugging 18–3 273
- 18–4 Chapter 18: Debugging 274
- Chapter 18: Debugging 18–5 275
- Setting Up Simulation 276
- Chapter 18: Debugging 18–7 277
- Use Third-Party PCIe Analyzer 278
- BIOS Enumeration Issues 278
- Notes to Table A–7: 280
- Chapter : A–3 281
- Notes to Table A–16: 282
- Additional Information 283
- Info–2 Revision History 284
- How to Contact Altera 285
- Typographic Conventions 286
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