V-Series Avalon-MM DMA Interface for PCIe Solutions User Guide

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ID 683514
Date 7/31/2018
Public
Document Table of Contents
Document Table of Contents x
1. Datasheet 2. Getting Started with the Avalon-MM DMA 3. Parameter Settings 4. Registers 5. Error Handling 6. PCI Express Protocol Stack 7. V-Series Avalon-MM DMA for PCI Express 8. Transceiver PHY IP Reconfiguration A. Frequently Asked Questions for V-Series Avalon-MM DMA Interface for PCIe B. V-Series Interface for PCIe Solutions User Guide Archive C. Document Revision History
1. Datasheet x
1.1. V-Series Avalon-MM DMA Interface for PCIe* Datasheet 1.2. Features 1.3. Comparison of Avalon-ST, Avalon-MM and Avalon-MM with DMA Interfaces for V-Series Devices 1.4. Release Information 1.5. V-Series Device Family Support 1.6. Design Examples 1.7. Debug Features 1.8. IP Core Verification 1.9. Resource Utilization 1.10. V-Series Recommended Speed Grades 1.11. Creating a Design for PCI Express
1.8. IP Core Verification x
1.8.1. Compatibility Testing Environment
2. Getting Started with the Avalon-MM DMA x
2.1. Understanding the Avalon-MM DMA Ports 2.2. Generating the Testbench 2.3. Simulating the Example Design in ModelSim* 2.4. Running a Gate-Level Simulation 2.5. Generating Synthesis Files 2.6. Compiling the Design 2.7. Creating a Quartus® Prime Project
2.2. Generating the Testbench x
2.2.1. Understanding the Simulation Generated Files 2.2.2. Understanding Simulation Log File Generation
3. Parameter Settings x
3.1. System Settings 3.2. Base Address Register (BAR) Settings 3.3. Device Identification Registers 3.4. PCI Express and PCI Capabilities Parameters 3.5. PCIe Address Space Settings
3.4. PCI Express and PCI Capabilities Parameters x
3.4.1. Device Capabilities 3.4.2. Error Reporting 3.4.3. Link Capabilities 3.4.4. MSI and MSI-X Capabilities 3.4.5. Power Management
4. Registers x
4.1. Correspondence between Configuration Space Registers and the PCIe Specification 4.2. Type 0 Configuration Space Registers 4.3. Type 1 Configuration Space Registers 4.4. PCI Express Capability Structures 4.5. Intel-Defined VSEC Registers 4.6. Advanced Error Reporting Capability 4.7. DMA Descriptor Controller Registers 4.8. Control Register Access (CRA) Avalon-MM Slave Port
4.5. Intel-Defined VSEC Registers x
4.5.1. CvP Registers
4.6. Advanced Error Reporting Capability x
4.6.1. Uncorrectable Internal Error Mask Register 4.6.2. Uncorrectable Internal Error Status Register 4.6.3. Correctable Internal Error Mask Register 4.6.4. Correctable Internal Error Status Register
4.7. DMA Descriptor Controller Registers x
4.7.1. Read DMA Descriptor Controller Registers 4.7.2. Write DMA Descriptor Controller Registers 4.7.3. Read DMA and Write DMA Descriptor Format 4.7.4. Read DMA Example 4.7.5. Software Program for Simultaneous Read and Write DMA
5. Error Handling x
5.1. Physical Layer Errors 5.2. Data Link Layer Errors 5.3. Transaction Layer Errors 5.4. Error Reporting and Data Poisoning 5.5. Uncorrectable and Correctable Error Status Bits
6. PCI Express Protocol Stack x
6.1. Top-Level Interfaces 6.2. Data Link Layer 6.3. Physical Layer
6.1. Top-Level Interfaces x
6.1.1. Avalon-MM DMA Interface 6.1.2. Clocks and Reset 6.1.3. Transceiver Reconfiguration 6.1.4. Interrupts 6.1.5. PIPE
7. V-Series Avalon-MM DMA for PCI Express x
7.1. Understanding the Internal DMA Descriptor Controller 7.2. Understanding the External DMA Descriptor Controller
8. Transceiver PHY IP Reconfiguration x
8.1. Connecting the Transceiver Reconfiguration Controller IP Core 8.2. Transceiver Reconfiguration Controller Connectivity for Designs Using CvP
C. Document Revision History x
C.1. Document Revision History for the V-Series Avalon® Memory Mapped (Avalon-MM) DMA Interface for PCIe* Solutions User Guide
1. Datasheet
2. Getting Started with the Avalon-MM DMA
3. Parameter Settings
4. Registers
5. Error Handling
6. PCI Express Protocol Stack
7. V-Series Avalon-MM DMA for PCI Express
8. Transceiver PHY IP Reconfiguration
A. Frequently Asked Questions for V-Series Avalon-MM DMA Interface for PCIe
B. V-Series Interface for PCIe Solutions User Guide Archive
C. Document Revision History

6. PCI Express Protocol Stack

The V-Series Avalon-MM Hard IP for PCI Express implements the complete PCI Express protocol stack as defined in the PCI Express Base Specification. The protocol stack includes the following layers:

  • Transaction Layer—The Transaction Layer contains the Configuration Space, which manages communication with the Application Layer, the RX and TX channels, the RX buffer, and flow control credits.
  • Data Link Layer—The Data Link Layer, located between the Physical Layer and the Transaction Layer, manages packet transmission and maintains data integrity at the link level. Specifically, the Data Link Layer performs the following tasks:
    • Manages transmission and reception of Data Link Layer Packets (DLLPs)
    • Generates all transmission cyclical redundancy code (CRC) values and checks all CRCs during reception
    • Manages the retry buffer and retry mechanism according to received ACK/NAK Data Link Layer packets
    • Initializes the flow control mechanism for DLLPs and routes flow control credits to and from the Transaction Layer
  • Physical Layer—The Physical Layer initializes the speed, lane numbering, and lane width of the PCI Express link according to packets received from the link and directives received from higher layers.

The following figure provides a high‑level block diagram.

Figure 13.  V-Series Avalon-MM DMA for PCI Express
Table 47.  Application Layer Clock Frequencies

Lanes

Gen1

Gen2

Gen3

×2

N/A

125 MHz @ 128 bits

125 MHz @ 128 bits

×4

N/A

125 MHz @ 128 bits

250 MHz @ 128 bits or

125 MHz @ 256 bits

×8

125 MHz @ 128 bits

250 MHz @ 128 bits or

125 MHz @ 256 bits

250 MHz @ 256 bits


Section Content
Top-Level Interfaces
Data Link Layer
Physical Layer

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