GTS JESD204B Intel® FPGA IP User Guide

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ID 832100
Date 4/16/2025
Public
Document Table of Contents
Document Table of Contents x
1. GTS JESD204B IP Quick Reference 2. About the GTS JESD204B Intel® FPGA IP 3. Getting Started 4. GTS JESD204B IP Functional Description 5. GTS JESD204B IP Deterministic Latency Implementation Guidelines 6. GTS JESD204B IP Debug Guidelines 7. Document Revision History for the GTS JESD204B Intel® FPGA IP User Guide
2. About the GTS JESD204B Intel® FPGA IP x
2.1. Release Information 2.2. Device Family Support 2.3. Datapath Modes 2.4. IP Variation 2.5. GTS JESD204B IP Configuration 2.6. Channel Bonding 2.7. Performance and Resource Utilization
3. Getting Started x
3.1. Introduction to Intel® FPGA IP Cores 3.2. Installing and Licensing Intel® FPGA IP Cores 3.3. Intel® FPGA IP Evaluation Mode 3.4. Upgrading IP Cores 3.5. IP Catalog and Parameter Editor 3.6. Design Walkthrough 3.7. GTS JESD204B IP Design Considerations 3.8. GTS JESD204B Intel® FPGA IP Parameters 3.9. Analog Parameter Settings 3.10. GTS JESD204B IP Component Files
3.6. Design Walkthrough x
3.6.1. Creating a New Quartus® Prime Project 3.6.2. Parameterizing and Generating the IP 3.6.3. Compiling the GTS JESD204B IP Core Design 3.6.4. Programming an FPGA Device
3.7. GTS JESD204B IP Design Considerations x
3.7.1. Integrating the GTS JESD204B IP in Platform Designer 3.7.2. Pin Assignments 3.7.3. Configuring the GTS Reset Sequencer Intel® FPGA IP
4. GTS JESD204B IP Functional Description x
4.1. Transmitter 4.2. Receiver 4.3. Dual Simplex Support 4.4. Operation 4.5. Clocking Scheme 4.6. Reset Scheme 4.7. Signals 4.8. Registers
4.1. Transmitter x
4.1.1. TX Data Link Layer 4.1.2. TX PHY Layer
4.1.1. TX Data Link Layer x
4.1.1.1. TX CGS 4.1.1.2. TX ILAS 4.1.1.3. User Data Phase
4.2. Receiver x
4.2.1. RX Data Link Layer 4.2.2. RX PHY Layer
4.2.1. RX Data Link Layer x
4.2.1.1. RX CGS 4.2.1.2. Frame Synchronization 4.2.1.3. Frame Alignment 4.2.1.4. Lane Alignment 4.2.1.5. ILAS Data 4.2.1.6. Initial Lane Synchronization
4.4. Operation x
4.4.1. Operating Modes 4.4.2. Scrambler/Descrambler 4.4.3. SYNC_N Signal 4.4.4. Link Reinitialization 4.4.5. Link Startup Sequence 4.4.6. Error Reporting Through SYNC_N Signal
4.4.1. Operating Modes x
4.4.1.1. Subclass 0 Operating Mode 4.4.1.2. Subclass 1 Operating Mode 4.4.1.3. Subclass 2 Operating Mode
4.5. Clocking Scheme x
4.5.1. Device Clock 4.5.2. Link Clock 4.5.3. Local MultiFrame Clock 4.5.4. Clock Correlation 4.5.5. GTS Reset Sequencer Intel® FPGA IP Clock
4.6. Reset Scheme x
4.6.1. Reset Sequence 4.6.2. TX Reset Entry and Exit Sequence 4.6.3. RX Reset Entry and Exit Sequence
4.7. Signals x
4.7.1. Transmitter Signals 4.7.2. Receiver Signals
4.8. Registers x
4.8.1. Register Access Type Convention 4.8.2. Register Map and Definition 4.8.3. Transmitter Registers 4.8.4. Receiver Registers
5. GTS JESD204B IP Deterministic Latency Implementation Guidelines x
5.1. Constraining Incoming SYSREF Signal 5.2. Programmable RBD Offset 5.3. Programmable LMFC Offset 5.4. Maintaining Deterministic Latency during Link Reinitialization
6. GTS JESD204B IP Debug Guidelines x
6.1. Clocking Scheme 6.2. GTS JESD204B Parameters 6.3. SPI Programming 6.4. Converter and FPGA Operating Conditions 6.5. Signal Polarity and FPGA Pin Assignment 6.6. Transceiver Toolkit
1. GTS JESD204B IP Quick Reference
2. About the GTS JESD204B Intel® FPGA IP
3. Getting Started
4. GTS JESD204B IP Functional Description
5. GTS JESD204B IP Deterministic Latency Implementation Guidelines
6. GTS JESD204B IP Debug Guidelines
7. Document Revision History for the GTS JESD204B Intel® FPGA IP User Guide

4.6.3. RX Reset Entry and Exit Sequence

Figure 20. RX IP Reset Entry and Exit Sequence

The descriptions below correspond to Figure 20

  1. The user logic asserts the GTS JESD204B IP and configuration reset to the GTS JESD204B IP RX, j204b_rx_avs_rst_n = 1, j204b_rx_rst_n = 0, and reconfig_xcvr_reset = 1.
    Note: If you assert j204b_rx_avs_rst_n and reconfig_xcvr_reset, j204b_rx_rst_n is required to be asserted as well. You can opt to assert j204b_rx_rst_n without asserting j204b_rx_avs_rst_n and reconfig_xcvr_reset.
  2. Wait for the Core PLL to lock. After which, the user logic deasserts j204b_rx_avs_rst_n and reconfig_xcvr_reset and perform configurations of the PHY and IP.
  3. After all relevant PHY channels are fully in reset, the IP core asserts j204b_rx_rst_ack_n = 0 to the user logic. Knowing the relevant channels are in proper reset states, the user logic can release the reset to the IP core when possible (j204b_rx_rst_n = 1). Use j204b_rx_rst_ack_n as an indicator to deassert j204b_rx_rst_n = 1.
  4. The user logic deasserts the IP reset (j204b_rx_rst_n = 1).
  5. The IP core deasserts j204b_rx_rst_ack_n = 1 to indicate that reset sequence is complete.
  6. The IP informs you that the MAC is released from reset by asserting j204b_rx_out_of_reset = 1. You must synchronize j204b_rx_out_of_reset to rxlink_clk or rxframe_clk domain before use.
  7. Based on the j204b_rx_out_of_reset status, for Subclass 1, if the continuous SYSREF pulses from the clock generator are present when the RX link reset is deasserted, the RX link initializes. If the SYSREF pulse is not present, trigger the clock generator to provide a SYSREF pulse to initialize the link.
  8. The IP core asserts j204b_rx_link_valid = 1 to user when alignment and deskew is achieved, and deskew is complete. The GTS JESD204B RX IP core is operational.
  9. At any time when you require a reset to the MAC and PHY, you must wait for j204b_rx_rst_ack_n = 1. Assertion of j204b_rx_rst_n = 0 resets the MAC and PHY in the IP core.
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