【文件属性】：
文件名称：PCI Express® Base Specification Revision 4.0 Version 0.3.pdf.zip
文件大小：10.59MB
文件格式：ZIP
更新时间：2022-10-07 16:11:37
pcie 4.0 标准
1.
INTRODUCTION............................................................................................................... 46
1.1. A THIRD GENERATION I/O INTERCONNECT ................................................................... 46
1.2. PCI EXPRESS LINK......................................................................................................... 49
1.3. PCI EXPRESS FABRIC TOPOLOGY .................................................................................. 50
1.3.1. Root Complex........................................................................................................ 50 1.3.2. Endpoints .............................................................................................................. 51 1.3.3. Switch .................................................................................................................... 54 1.3.4. Root Complex Event Collector .............................................................................. 55 1.3.5. PCI Express to PCI/PCI-X Bridge........................................................................ 55
1.4. PCI EXPRESS FABRIC TOPOLOGY CONFIGURATION ....................................................... 55 1.5. PCI EXPRESS LAYERING OVERVIEW.............................................................................. 56 1.5.1. Transaction Layer ................................................................................................. 57 1.5.2. Data Link Layer .................................................................................................... 57 1.5.3. Physical Layer ...................................................................................................... 58 1.5.4. Layer Functions and Services............................................................................... 58
TRANSACTION LAYER SPECIFICATION ................................................................. 62
2.1. TRANSACTION LAYER OVERVIEW.................................................................................. 62
2.1.1. Address Spaces, Transaction Types, and Usage................................................... 63
2.1.2. Packet Format Overview ...................................................................................... 65
2.2. TRANSACTION LAYER PROTOCOL - PACKET DEFINITION............................................... 67
2.2.1. Common Packet Header Fields ............................................................................ 67 2.2.2. TLPs with Data Payloads - Rules ......................................................................... 70 2.2.3. TLP Digest Rules .................................................................................................. 74 2.2.4. Routing and Addressing Rules .............................................................................. 74 2.2.5. First/Last DW Byte Enables Rules........................................................................ 78 2.2.6. Transaction Descriptor ......................................................................................... 81 2.2.7. Memory, I/O, and Configuration Request Rules................................................... 87 2.2.8. Message Request Rules ......................................................................................... 94 2.2.9. Completion Rules ................................................................................................ 115 2.2.10. TLP Prefix Rules ................................................................................................. 118
2.3. HANDLING OF RECEIVED TLPS.................................................................................... 123
2.3.1. Request Handling Rules...................................................................................... 126
2.3.2. Completion Handling Rules................................................................................ 138
2.4. TRANSACTION ORDERING ............................................................................................ 142
2.4.1. Transaction Ordering Rules ............................................................................... 142
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PCI Express® Base Specification Revision 4.0 Version 0.3.pdf