GTS JESD204C Intel® FPGA IP User Guide

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ID 813959
Date 4/01/2024
Public
Document Table of Contents
Document Table of Contents x
1. About the GTS JESD204C Intel® FPGA IP User Guide 2. Overview of the GTS JESD204C Intel® FPGA IP 3. Functional Description 4. Getting Started 5. Designing with the GTS JESD204C Intel® FPGA IP 6. GTS JESD204C Intel® FPGA IP Parameters 7. Interface Signals 8. Document Revision History for the GTS JESD204C Intel® FPGA IP User Guide
2. Overview of the GTS JESD204C Intel® FPGA IP x
2.1. Release Information 2.2. Device Family Support 2.3. GTS JESD204C Intel® FPGA IP Features 2.4. Performance and Resource Utilization
3. Functional Description x
3.1. Clocks 3.2. Local Extended Multiblock Clock 3.3. CRC Encoding/Decoding 3.4. Scrambler/Descrambler
3.1. Clocks x
3.1.1. Device Clock 3.1.2. Frame Clock and Link Clock 3.1.3. GTS Reset Sequencer Intel® FPGA IP Clock
3.2. Local Extended Multiblock Clock x
3.2.1. LEMC Counter
4. Getting Started x
4.1. Installing and Licensing Intel® FPGA IP Cores 4.2. Intel® FPGA IP Evaluation Mode 4.3. IP Catalog and Parameter Editor 4.4. GTS JESD204C IP Component Files 4.5. Creating a New Quartus® Prime Project 4.6. Parameterizing and Generating the IP 4.7. Compiling the GTS JESD204C IP Design 4.8. Programming an FPGA Device
5. Designing with the GTS JESD204C Intel® FPGA IP x
5.1. Configuring the GTS Reset Sequencer Intel® FPGA IP 5.2. Reset Initialization 5.3. Configuration Phase 5.4. Link Reinitialization 5.5. SYSREF Sampling 5.6. Interrupt and Error Handling 5.7. Multi-Device Synchronization 5.8. Deterministic Latency
5.2. Reset Initialization x
5.2.1. GTS JESD204C TX Reset Sequence 5.2.2. GTS JESD204C RX Reset Sequence
5.6. Interrupt and Error Handling x
5.6.1. Interrupt Configuration for TX and RX 5.6.2. Interrupt Top Half ISR Handler 5.6.3. Interrupt Bottom Half ISR Handler
5.7. Multi-Device Synchronization x
5.7.1. Multi-Device DAC Application for Subclass 1 5.7.2. Multi-Device ADC Application for Subclass 1
5.8. Deterministic Latency x
5.8.1. RBD Tuning Mechanism
7. Interface Signals x
7.1. Transmitter Signals 7.2. Receiver Signals
1. About the GTS JESD204C Intel® FPGA IP User Guide
2. Overview of the GTS JESD204C Intel® FPGA IP
3. Functional Description
4. Getting Started
5. Designing with the GTS JESD204C Intel® FPGA IP
6. GTS JESD204C Intel® FPGA IP Parameters
7. Interface Signals
8. Document Revision History for the GTS JESD204C Intel® FPGA IP User Guide

3.1.1. Device Clock

In a converter device, the sampling clock is typically the device clock. The GTS JESD204C IP uses the device clock to generate the desired internal clocks for the transceivers and core logic.

For the GTS JESD204C IP link in an FPGA logic device, you can select one of the options provided in the PLL/CDR reference clock frequency parameter in the GTS JESD204C IP parameter editor.

In the single reference clock design, both sets of pins are driven by the same clock source. The device clock is used as the transceiver PLL reference clock and also the core PLL reference clock. In the dual reference clock design, each set of pins are driven by a different clock source. The device clock is used as the core PLL reference clock and the other reference clock (phase-locked to device clock) is used as the transceiver PLL reference clock. If you want to use the same reference clock for the transceiver and core PLLs, you must use two separate input pins for these PLL reference clocks in your design. Use a common clock source on the board to generate two separate clocks of the same frequency to drive the inputs.

The device clock frequency depends on the data rate and total number of lanes. When you generate the IP, the Quartus® Prime Pro Edition software provides the available reference frequency for the transceiver PLL and core PLL based on your selection.

For Subclass 1 application, ensure that the routing of the SYSREF signal and the device clock to the FPGA has matching trace lengths.

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