AN 729: Implementing JESD204B IP Core System Reference Design with Nios II Processor

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ID 683844
Date 5/04/2015
Public
Document Table of Contents
Document Table of Contents x
1. Implementing JESD204B IP Core System Reference Design with Nios II Processor As Control Unit
1. Implementing JESD204B IP Core System Reference Design with Nios II Processor As Control Unit x
1.1. Reference Design Overview 1.2. Hardware and Software Requirements 1.3. Hardware Setup 1.4. System Modules 1.5. Reference Design Files 1.6. Generating Programming File 1.7. Top Level HDL Parameters 1.8. Setting Up the Software Command Line Environment 1.9. User Commands 1.10. Dynamic Reconfiguration 1.11. Customize the C code 1.12. AN 729 Document Revision History
1.4. System Modules x
1.4.1. Qsys System
1.4.1. Qsys System x
1.4.1.1. JESD204B Subsystem 1.4.1.2. Nios II Subsystem
1.4.1.1. JESD204B Subsystem x
1.4.1.1.1. Configuring the JESD204B IP core parameters in QSYS 1.4.1.1.2. Reset Sequencer 1.4.1.1.3. Transceiver PHY Reset Controller and ATX PLL 1.4.1.1.4. JESD204B Subsystem Address Map
1.4.1.2. Nios II Subsystem x
1.4.1.2.1. Nios II Subsystem Address Map
1.5. Reference Design Files x
1.5.1. FPGA Pin Assignments
1.10. Dynamic Reconfiguration x
1.10.1. Data Rate Reconfiguration
1.10.1. Data Rate Reconfiguration x
1.10.1.1. Customizing the Data Rate Reconfiguration Parameters
1.11. Customize the C code x
1.11.1. Sub Functions in main.c Source File 1.11.2. Functions in rules.c Source File 1.11.3. Custom Peripheral Access Macros in macros.c Source File
1. Implementing JESD204B IP Core System Reference Design with Nios II Processor As Control Unit

1.4.1.1.2. Reset Sequencer

The reset sequencer generates the following system resets to reset various modules in the system:

  • Core PLL reset—resets the core PLL
  • Transceiver reset—resets the JESD204B IP core PHY module
  • TX/RX JESD204B IP core CSR reset—resets the TX/RX JESD204B IP core configuration status registers
  • TX/RX link reset—resets the TX/RX JESD204B IP core base module and transport layer
  • TX/RX frame reset—resets the TX/RX transport layer and downstream modules

The reset sequencer has hard and soft reset options. The hard reset port connects to the PB0 push button on the Arria 10 FPGA development board. The soft reset option is executed by issuing the reset command via the terminal console in the Nios II SBT (Software Build Tools) for Eclipse tool. When you assert a hard reset, the reset sequencer cycles through all the various module resets based on a pre-set sequence. The figure below illustrates the sequence and also shows how the reset sequencer output ports correspond to the modules that are being reset.

Figure 4. Reset Sequence


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