GTS JESD204C IP User Guide

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ID 813959
Date 9/29/2025
Public
Document Table of Contents
Document Table of Contents x
1. About the GTS JESD204C IP User Guide 2. Overview of the GTS JESD204C IP 3. Functional Description 4. Getting Started 5. Designing with the GTS JESD204C IP 6. GTS JESD204C IP Parameters 7. Interface Signals 8. Control and Status Registers 9. Document Revision History for the GTS JESD204C IP User Guide
2. Overview of the GTS JESD204C IP x
2.1. Release Information 2.2. Device Family Support 2.3. GTS JESD204C 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 IP Clock
3.2. Local Extended Multiblock Clock x
3.2.1. LEMC Counter
4. Getting Started x
4.1. Installing and Licensing IP Cores 4.2. Altera® 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 IP x
5.1. Configuring the GTS Reset Sequencer 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 5.9. Pin Assignments 5.10. Dual Simplex Support 5.11. Analog Parameter Settings 5.12. Transceiver Toolkit
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
8. Control and Status Registers x
8.1. Transmitter Registers 8.2. Receiver Registers
1. About the GTS JESD204C IP User Guide
2. Overview of the GTS JESD204C IP
3. Functional Description
4. Getting Started
5. Designing with the GTS JESD204C IP
6. GTS JESD204C IP Parameters
7. Interface Signals
8. Control and Status Registers
9. Document Revision History for the GTS JESD204C IP User Guide

1. About the GTS JESD204C IP User Guide

Updated for:
Intel® Quartus® Prime Design Suite 25.3
IP Version 8.0.0

This user guide provides the features, architecture description, steps to instantiate, and guidelines to design the GTS JESD204C IP using Agilex™ 5 E-Series/D-Series devices.

Intended Audience

This document is intended for:

  • Design architect to make IP selection during system level design planning phase
  • Hardware designers when integrating the IP into their system level design
  • Validation engineers during system level simulation and hardware validation phase

Related Documents

For other documents related to the JESD204C protocol, refer to the related information.

Acronyms and Glossary

Table 1.  Acronym List
Acronym Expansion
LEMC Local Extended Multiblock Clock
FC Frame clock rate
ADC Analog to Digital Converter
DAC Digital to Analog Converter
DSP Digital Signal Processor
TX Transmitter
RX Receiver
DLL Data link layer
CSR Control and status register
CRU Clock and Reset Unit
ISR Interrupt Service Routine
FIFO First-In-First-Out
SERDES Serializer Deserializer
ECC Error Correcting Code
FEC Forward Error Correction
SERR Single Error Detection (in ECC, correctable)
DERR Double Error Detection (in ECC, fatal)
PRBS Pseudorandom binary sequence
MAC Media Access Controller. MAC includes protocol sublayer, transport layer, and data link layer.
NPDME Native PHY Debug Master Endpoint
PHY Physical Layer. PHY typically includes the physical layer, SERDES, drivers, receivers and CDR.
PCS Physical Coding Sub-layer
PMA Physical Medium Attachment
RBD RX Buffer Delay
UI Unit Interval = duration of serial bit
RBD count RX Buffer Delay latest lane arrival
RBD offset RX Buffer Delay release opportunity
SH Sync header
SRC Soft reset controller
TL Transport layer
Table 2.  Glossary List
Term Description
Converter Device ADC or DAC converter
Logic Device FPGA or ASIC
Octet A group of 8 bits, serving as input to 64/66 encoder and output from the decoder
Nibble A set of 4 bits which is the base working unit of JESD204C specifications
Block A 66-bit symbol generated by the 64/66 encoding scheme
Link Clock

Link Clock = Lane Line Rate/66.
Frame A set of consecutive octets in which the position of each octet can be identified by reference to a frame alignment signal.
Frame Clock A system clock which runs at the frame's rate, that must be 1x or 2x link clock.
Samples per frame clock

Samples per clock, the total samples in frame clock for the converter device.
LEMC Internal clock used to align the boundary of the extended multiblocks between lanes and into the external references (SYSREF or Subclass 1).
Subclass 0 No support for deterministic latency. Data should be immediately released upon lane to lane deskew on receiver.
Subclass 1 Deterministic latency using SYSREF.
Multipoint Link Inter-device links with 2 or more converter devices.
64B/66B Encoding Line code that maps 64-bit data to 66 bits to form a block. The base level data structure is a block that starts with 2-bit sync header.
FEC Forward error correction
Table 3.  Symbols
Term Description
L Number of lanes per converter device
M Number of converters per device
F Number of octets per frame on a single lane
S Number of samples transmitted per single converter per frame cycle
N Converter resolution
N’ Total number of bits per sample in the user data format
CS Number of control bits per conversion sample
CF Number of control words per frame clock period per link
HD High Density user data format
E Number of multiblocks in an extended multiblock
Related Information
Level Two Title