Intel Agilex® 7 LVDS SERDES User Guide: F-Series and I-Series

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ID 721819
Date 12/11/2023
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Document Table of Contents
Document Table of Contents x
1. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Overview 2. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Architecture 3. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Transmitter 4. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Receiver 5. Intel Agilex® 7 F-Series and I-Series High-Speed LVDS I/O Implementation Guide 6. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Timing 7. LVDS SERDES Intel® FPGA IP Design Examples 8. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Design Guidelines 9. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Troubleshooting Guidelines 10. Documentation Related to the Intel Agilex® 7 LVDS SERDES User Guide: F-Series and I-Series 11. Document Revision History for the Intel Agilex® 7 LVDS SERDES User Guide: F-Series and I-Series
1. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Overview x
1.1. LVDS SERDES Usage Modes
2. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Architecture x
2.1. F-Series and I-Series GPIO Banks, SERDES, and DPA Locations 2.2. SERDES Blocks, Modes, and Clock Domains
3. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Transmitter x
3.1. LVDS SERDES Transmitter Blocks 3.2. Serializer 3.3. Differential I/O Bit Position 3.4. Clocking the Differential Transmitters
3.2. Serializer x
3.2.1. Serializer Bypass for DDR and SDR Operations
3.4. Clocking the Differential Transmitters x
3.4.1. Transmitter Output Clock Parameters Settings
3.4.1. Transmitter Output Clock Parameters Settings x
3.4.1.1. Edge-Aligned tx_outclock to tx_out 3.4.1.2. Center-Aligned tx_outclock to tx_out
4. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Receiver x
4.1. LVDS SERDES Receiver Blocks 4.2. Clocking the LVDS SERDES Receivers 4.3. LVDS SERDES Receiver Modes
4.1. LVDS SERDES Receiver Blocks x
4.1.1. Dynamic Phase Alignment Block 4.1.2. Synchronizer (DPA FIFO) 4.1.3. Data Realignment Block (Bit Slip) 4.1.4. Deserializer
4.2. Clocking the LVDS SERDES Receivers x
4.2.1. Receiver Input Clock Parameters Settings
4.2.1. Receiver Input Clock Parameters Settings x
4.2.1.1. Edge-Aligned inclock to rx_in 4.2.1.2. Center-Aligned inclock to rx_in
4.3. LVDS SERDES Receiver Modes x
4.3.1. Non-DPA Mode 4.3.2. DPA Mode 4.3.3. Soft-CDR Mode
5. Intel Agilex® 7 F-Series and I-Series High-Speed LVDS I/O Implementation Guide x
5.1. LVDS SERDES Intel® FPGA IP 5.2. LVDS Interface with External PLL Mode 5.3. LVDS SERDES IP Initialization and Reset
5.1. LVDS SERDES Intel® FPGA IP x
5.1.1. Release Information 5.1.2. LVDS SERDES Intel® FPGA IP Features 5.1.3. LVDS SERDES IP Usage Modes 5.1.4. Generating the LVDS SERDES Intel® FPGA IP 5.1.5. LVDS SERDES Intel® FPGA IP Parameter Settings 5.1.6. LVDS SERDES Intel® FPGA IP Signals
5.1.4. Generating the LVDS SERDES Intel® FPGA IP x
5.1.4.1. Intel® FPGA IP Generation Output
5.1.5. LVDS SERDES Intel® FPGA IP Parameter Settings x
5.1.5.1. LVDS SERDES Intel® FPGA IP General Settings 5.1.5.2. LVDS SERDES Intel® FPGA IP PLL Settings 5.1.5.3. LVDS SERDES Intel® FPGA IP Receiver Settings 5.1.5.4. LVDS SERDES Intel® FPGA IP Transmitter Settings 5.1.5.5. LVDS SERDES Intel® FPGA IP Clock Resource Summary
5.2. LVDS Interface with External PLL Mode x
5.2.1. IOPLL IP Signal Interface with LVDS SERDES IP 5.2.2. IOPLL Parameter Values for External PLL Mode 5.2.3. Connection between IOPLL IP and LVDS SERDES IP in External PLL Mode
5.3. LVDS SERDES IP Initialization and Reset x
5.3.1. Initializing the LVDS SERDES IP in Non-DPA Mode 5.3.2. Initializing the LVDS SERDES IP in DPA Mode 5.3.3. Resetting the DPA 5.3.4. Word Boundaries Alignment
5.3.4. Word Boundaries Alignment x
5.3.4.1. Aligning Word Boundaries
6. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Timing x
6.1. LVDS SERDES Intel® FPGA IP Timing 6.2. LVDS SERDES Source-Synchronous Timing Budget
6.1. LVDS SERDES Intel® FPGA IP Timing x
6.1.1. I/O Timing Analysis 6.1.2. FPGA Timing Analysis 6.1.3. Timing Analysis for the External PLL Mode
6.1.1. I/O Timing Analysis x
6.1.1.1. Obtaining RSKM Report 6.1.1.2. Obtaining TCCS Report
6.2. LVDS SERDES Source-Synchronous Timing Budget x
6.2.1. Transmitter Channel-to-Channel Skew 6.2.2. Receiver Skew Margin
7. LVDS SERDES Intel® FPGA IP Design Examples x
7.1. LVDS SERDES IP Synthesizable Intel® Quartus® Prime Design Examples 7.2. LVDS SERDES IP Simulation Design Example
8. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Design Guidelines x
8.1. Use PLLs in Integer PLL Mode for LVDS 8.2. Use High-Speed Clock from PLL to Clock SERDES Only 8.3. Pin Placement for Differential Channels 8.4. SERDES Pin Pairs for Soft-CDR Mode 8.5. Placing LVDS Transmitters and Receivers in the Same GPIO Bank
1. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Overview
2. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Architecture
3. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Transmitter
4. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Receiver
5. Intel Agilex® 7 F-Series and I-Series High-Speed LVDS I/O Implementation Guide
6. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Timing
7. LVDS SERDES Intel® FPGA IP Design Examples
8. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Design Guidelines
9. Intel Agilex® 7 F-Series and I-Series LVDS SERDES Troubleshooting Guidelines
10. Documentation Related to the Intel Agilex® 7 LVDS SERDES User Guide: F-Series and I-Series
11. Document Revision History for the Intel Agilex® 7 LVDS SERDES User Guide: F-Series and I-Series

5.1.5.2. LVDS SERDES Intel® FPGA IP PLL Settings

Table 13.  PLL Settings Tab
Parameter Value Description
Use external PLL
  • On
  • Off

Turn on to use an external PLL:

  • The IP does not instantiate a local PLL.
  • The IP creates a series of clock connections with the "ext" prefix. Connect these ports to an externally generated PLL.
  • For details about how to configure the external PLL, refer to the Clock Resource Summary tab of the parameter editor.

Default is Off.

This option allows you to access all of the available clocks from the PLL and use advanced PLL features such as clock switchover, bandwidth presets, dynamic phase stepping, and dynamic reconfiguration.

This option is disabled if you turn on Specify additional output clocks based on existing PLL.

Desired inclock frequency —

Specifies the inclock frequency in MHz.

Default is 100.0.

Actual inclock frequency —

Displays the closest inclock frequency to the desired frequency that can source the interface.

The displayed value changes according to the Desired inclock frequency parameter value.

FPGA/PLL speed grade —

Displays the FPGA/PLL speed grade, which determines the operation range of the PLL.

The displayed value is based on the device selected in your project.
Enable pll_areset port —

Exposes the pll_areset port. You can use the pll_areset signal to reset the entire LVDS interface.

This parameter is always turned on.
Core clock resource type —

Specifies onto which clock network the IP core exports an internally generated coreclock.

The parameter is always set to Periphery.

Specify additional output clocks based on existing PLL
  • On
  • Off

Exports additional PLL output clocks based on the existing PLL settings.

You can only specify output clocks that are not currently used internally to the IP. The output clocks that are used internally are not modifiable.

Be careful when you set cross clock domain transfer with exported output clocks because these output clocks are asynchronous to other clocks generated by the IP.

The option is disabled if you turn on Use external PLL.

Table 14.  PLL Settings Tab—Output Clocks
Parameter Value Description
Number of Additional Clocks 0 to 4

Specifies the number of additional output clocks to expose.

Default is 0.

This option is available if you turn on Specify additional output clocks based on existing PLL.

Table 15.  PLL Settings Tab—outclkn The parameters in this table are available if the Number of Additional Clocks is 1 to 4. In this table, n represents the number of output clocks starting with 0. The parameter settings for outclk0 to outclk4 are reserved. The modifiable parameters for the output clocks start with outclk5 (pll_extra_clock0).
Parameter Value Description
Desired frequency 1.0 to 10000.0

Specifies the output clock frequency of the corresponding output clock port, pll_extra_clock[], in MHz.

Default is 100.0.

Actual frequency Depends on Desired frequency.

Allows you to select the actual output clock frequency from a list of achievable frequencies.

Default is the closest frequency achievable to Desired frequency.

Phase shift units ps

Specifies the phase shift unit for the corresponding output clock port, pll_extra_clockn , in picoseconds (ps).

Phase shift —

Specifies the requested value for the phase shift.

The default is 0.0.

Actual phase shift Depends on Phase shift.

Allows you to select the actual phase shift from a list of achievable phase shift values.

The default is 0.0.

Desired duty cycle 0 to 100

Specifies the requested value for the duty cycle in percentage.
Actual duty cycle Depends on Desired duty cycle.

Allows you to select the actual duty cycle from a list of achievable duty cycle values in percentage.

Default is the closest duty cycle achievable to Desired duty cycle.

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