JESD204B IP Core Design Example User Guide

Download PDF
ID 683094
Date 11/06/2017
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents
Document Table of Contents x
1. JESD204B IP Core Design Example User Guide
1. JESD204B IP Core Design Example User Guide x
1.1. JESD204B Design Example Quick Start Guide 1.2. Supported Configurations 1.3. Generic Design Example 1.4. Presets 1.5. Selecting and Generating the Design Example 1.6. Design Example with RTL State Machine Control Unit 1.7. Design Example with Nios II Processor Control Unit 1.8. JESD204B IP Core Design Example Document Archives 1.9. JESD204B IP Core Design Example User Guide Document Revision History
1.1. JESD204B Design Example Quick Start Guide x
1.1.1. Directory Structure 1.1.2. Generating the Design 1.1.3. Compiling and Simulating the Design 1.1.4. Compiling and Testing the Design
1.1.2. Generating the Design x
1.1.2.1. Procedure 1.1.2.2. Design Example Parameters
1.1.3. Compiling and Simulating the Design x
1.1.3.1. Procedure
1.6. Design Example with RTL State Machine Control Unit x
1.6.1. Design Example Components 1.6.2. System Parameters 1.6.3. System Interface Signals 1.6.4. Example Feature: Dynamic Reconfiguration 1.6.5. Generating and Simulating the Design Example 1.6.6. Generating the Design Example For Compilation 1.6.7. Compiling the JESD204B IP Core Design Example
1.6.1. Design Example Components x
1.6.1.1. PLL 1.6.1.2. PLL Reconfiguration 1.6.1.3. Transceiver Reconfiguration Controller 1.6.1.4. Transceiver Reset Controller 1.6.1.5. Pattern Generator 1.6.1.6. Pattern Checker 1.6.1.7. Transport Layer 1.6.1.8. Serial Port Interface (SPI) 1.6.1.9. Control Unit
1.6.1.5. Pattern Generator x
1.6.1.5.1. Parallel PRBS Generator 1.6.1.5.2. Alternate Checkerboard Generator 1.6.1.5.3. Ramp Wave Generator
1.6.1.6. Pattern Checker x
1.6.1.6.1. Parallel PRBS Checker 1.6.1.6.2. Alternate Checkerboard Checker 1.6.1.6.3. Ramp Wave Checker
1.6.1.7. Transport Layer x
1.6.1.7.1. Supported System Configuration 1.6.1.7.2. Data Bit and Content Mapping Scheme 1.6.1.7.3. TX Path 1.6.1.7.4. RX Path
1.6.1.9. Control Unit x
1.6.1.9.1. Memory Block (ROM) 1.6.1.9.2. Finite State Machine (FSM)
1.6.2. System Parameters x
1.6.2.1. Run-Time Reconfiguration
1.6.4. Example Feature: Dynamic Reconfiguration x
1.6.4.1. Dynamic Reconfiguration Operation 1.6.4.2. MIF ROM
1.6.5. Generating and Simulating the Design Example x
1.6.5.1. Generating the Design Example Simulation Model 1.6.5.2. Simulating the JESD204B IP Core Design Example
1.7. Design Example with Nios II Processor Control Unit x
1.7.1. Design Example Components 1.7.2. System Clocking 1.7.3. Nios II Processor Design Example Files 1.7.4. Nios II Processor Design Example System Parameters 1.7.5. Nios II Processor Design Example System Interface Signals 1.7.6. Compiling the Design Example for Synthesis 1.7.7. Implementing the Design on the Development Kit 1.7.8. Running the Software Control Flow 1.7.9. Customizing the Design Example
1.7.1. Design Example Components x
1.7.1.1. Qsys System Component 1.7.1.2. Transport Layer 1.7.1.3. Test Pattern Generator 1.7.1.4. Test Pattern Checker
1.7.1.1. Qsys System Component x
1.7.1.1.1. JESD204B Subsystem in Qsys 1.7.1.1.2. Nios II Subsystem in Qsys 1.7.1.1.3. Core PLL 1.7.1.1.4. PLL Reconfiguration Controller 1.7.1.1.5. SPI Master
1.7.7. Implementing the Design on the Development Kit x
1.7.7.1. Pin Assignments 1.7.7.2. Hardware Setup 1.7.7.3. Programming the Device
1.7.8. Running the Software Control Flow x
1.7.8.1. Executing the Software C Code 1.7.8.2. Software Parameters 1.7.8.3. Software Interrupt Service Routines (ISR) 1.7.8.4. Software Functions Description
1.7.8.4. Software Functions Description x
1.7.8.4.1. Functions in main.c Source File 1.7.8.4.2. Custom Peripheral Access Macros in macros.c Source File
1.7.9. Customizing the Design Example x
1.7.9.1. Modifying the JESD204B IP Core Parameters Post-Generation 1.7.9.2. Changing the Data Rate or Reference Clock Frequency 1.7.9.3. Implementing a Multi-Link Design
1.7.9.3. Implementing a Multi-Link Design x
1.7.9.3.1. Editing the Qsys Project 1.7.9.3.2. Editing the Top Level HDL File 1.7.9.3.3. Editing the Software C Code
1. JESD204B IP Core Design Example User Guide

1.7.8.3. Software Interrupt Service Routines (ISR)

One key feature of the Nios II processor control unit is the ability to handle interrupt requests (IRQ) from peripherals through the software interrupt service routines (ISR).

In this design example, the following peripherals have their IRQ output ports connected to the IRQ input port of the Nios II processor:

  • JESD204B IP core TX base layer
  • JESD204B IP core RX base layer
  • SPI master
  • Timer
  • Reset sequencer

The software C code included as part of the design example defines the ISRs for the following peripherals:

  • JESD204B IP core TX base layer
  • JESD204B IP core RX base layer
  • SPI master

The ISRs in the C code is a basic routine that performs two tasks:

  • Clear IRQ error flag
  • Print error type and message (for JESD204B IP core TX and RX base layer ISR only)

Error types and messages printed by the JESD204B IP core TX base layer ISR:

  • SYNC_N error
  • SYSREF LMFC error
  • DLL data invalid error
  • Transport layer data invalid error
  • SYNC_N link reinitialization request
  • Transceiver PLL locked error
  • Phase compensation FIFO full error
  • Phase compensation FIFO empty error

Error types and messages printed by the JESD204B IP core RX base layer ISR:

  • SYSREF LMFC error
  • DLL data ready error
  • Transport layer data ready error
  • Lane deskew error
  • RX locked to data error
  • Phase compensation FIFO full error
  • Phase compensation FIFO empty error
  • Code group synchronization error
  • Frame alignment error
  • Lane alignment error
  • Unexpected K character
  • Not in table error
  • Running disparity error
  • Initial Lane Alignment Sequence (ILAS) error
  • DLL error reserve status
  • ECC error corrected
  • ECC error fatal

The error types correspond to the tx_err, rx_err0, and rx_err1 status registers in the JESD204B IP core TX and RX register maps respectively. The PRINT_INTERRUPT_MESSAGES parameter in the main.h header file controls the printing of interrupt error messages in the Nios II console window. Set the parameter to 1 (default) to print error messages, else set to 0. Refer to the Software Parameters section for more details. You can modify the ISRs in the C code to customize the interrupt handling response based on your system specifications.

Related Information
Level Two Title