AN 814: Intel Arria 10 Two x8-Lane JESD204B (Duplex) IP Cores Multi-Device Synchronization Reference Design

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ID 683731
Date 1/30/2018
Public
Document Table of Contents
Document Table of Contents x
1. Intel® Arria® 10 Two x8-Lane JESD204B IP Cores (Duplex) Multi-Device Synchronization Reference Design
1. Intel® Arria® 10 Two x8-Lane JESD204B IP Cores (Duplex) Multi-Device Synchronization Reference Design x
1.1. Hardware and Software Requirements 1.2. Reference Design Walkthrough 1.3. Reference Design Functional Description 1.4. Document Revision History for AN 814: Intel® Arria® 10 Two x8-Lane JESD204B IP Cores (Duplex) Multi-Device Synchronization Reference Design
1.2. Reference Design Walkthrough x
1.2.1. Hardware Setup 1.2.2. Running the Reference Design 1.2.3. Software Parameters 1.2.4. Software Functions Description 1.2.5. Reconstructing Design and Running in Hardware 1.2.6. Viewing the Results
1.2.2. Running the Reference Design x
1.2.2.1. Configuring the FPGA 1.2.2.2. Executing the Software C Code and Initializing the JESD204B Link
1.2.4. Software Functions Description x
1.2.4.1. Functions in main.c Source File 1.2.4.2. Custom Peripheral Access Macros in macros.c Source File
1.2.5. Reconstructing Design and Running in Hardware x
1.2.5.1. Regenerating Files, Recompiling Design and Configuring the FPGA 1.2.5.2. Rebuilding Software and Initializing the JESD204B Link
1.3. Reference Design Functional Description x
1.3.1. Top Level HDL 1.3.2. Clocking Scheme 1.3.3. FPGA Pin Assignments
1.3.1. Top Level HDL x
1.3.1.1. Platform Designer Top System Component 1.3.1.2. Transport Layer 1.3.1.3. Test Pattern Generator 1.3.1.4. Test Pattern Checker 1.3.1.5. Deterministic Latency Measurement Module 1.3.1.6. Frequency Checker
1.3.1.1. Platform Designer Top System Component x
1.3.1.1.1. JESD204B Subsystem 1.3.1.1.2. Nios® II Subsystem in Platform Designer 1.3.1.1.3. Core PLL 1.3.1.1.4. PLL Reconfiguration Controller 1.3.1.1.5. SPI Master
1.3.1.1.2. Nios® II Subsystem in Platform Designer x
1.3.1.1.2.1. Nios® II Processor 1.3.1.1.2.2. Nios® II Subsystem Address Map
1. Intel® Arria® 10 Two x8-Lane JESD204B IP Cores (Duplex) Multi-Device Synchronization Reference Design

1.3.1.2. Transport Layer

The transport layer in the JESD204B IP core consists of an assembler at the TX path and a deassembler at the RX path. The transport layer for both the TX and RX path is implemented in the top level RTL file, not in the Platform Designer project.

The transport layer provides the following services to the application layer (AL) and the DLL:

  • The assembler at the TX path:
    • maps the conversion samples from the AL (through the Avalon® -ST interface) to a specific format of non-scrambled octets, before streaming them to the DLL.
    • reports AL error to the DLL if it encounters a specific error condition on the Avalon® -ST interface during TX data streaming.
  • The deassembler at the RX path:
    • maps the descrambled octets from the DLL to a specific conversion sample format before streaming them to the AL (through the Avalon® -ST interface).
    • reports AL error to the DLL if it encounters a specific error condition on the Avalon® -ST interface during RX data streaming.

The transport layer has many customization options and you may modify the transport layer RTL to customize it to your specifications. Furthermore, for certain parameters like L, F, and N, the transport layer shares the CSR values with the JESD204B IP core. This means that any dynamic reconfiguration operation that affects those values for the JESD204B IP core will affect the transport layer in the same way. By default, the software does not contain any dynamic reconfiguration features but you can use the Platform Designer system to implement such feature in the software.

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