JESD204B Intel® Agilex™ FPGA IP Design Example User Guide

ID 683530
Date 11/01/2021
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Document Table of Contents

1. About the JESD204B Intel® Agilex™ FPGA IP Design Example User Guide

Updated for:
Intel® Quartus® Prime Design Suite 21.3
IP Version 19.2.0

This user guide provides the features, usage guidelines, and detailed description about the design examples for the JESD204B Intel® FPGA IP using Intel® Agilex™ 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

The following table lists other reference documents which are related to the JESD204B Intel® FPGA IP design example.
Table 1.  Related Documents
Reference Description
JESD204B Intel® FPGA IP User Guide This document provides information about the JESD204B Intel® FPGA IP.
JESD204B Intel® FPGA IP Release Notes This document provides release information for the JESD204B Intel® FPGA IP.
Intel® Agilex™ Device Data Sheet

This document describes the electrical characteristics, switching characteristics, configuration specifications, and timing for Intel® Agilex™ devices.

Acronyms and Glossary

Table 2.  Acronym List
Acronym Expansion
LMFC Local Multiframe 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
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.
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
TL Transport layer
Table 3.  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 8B/10B encoder and output from the decoder
Data Rate

Effective data rate per lane for serial link

Data Rate = Sampling rate per converter x M x N' x (10/8)/L

Note: Sampling rate in Msps (Mega samples per second); Data rate in Mbps (Megabits per second)
Link Clock

The associated parallel data bus is 40 bits wide.

Link Clock = Data Rate/40.

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.
Samples per frame clock

Samples per clock, the total samples in frame clock for the converter device.

LMFC

Local multiframe clock is counter generated from the link clock and depends on the F and K parameters.

LMFC Period = (FxK/4) x Link Clock Period; the value of FxK must be divisible by 4.

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.
Table 4.  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