Interlaken (2nd Generation) Intel® FPGA IP User Guide

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ID 683396
Date 10/04/2021
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Document Table of Contents
Document Table of Contents x
1. Introduction 2. Getting Started 3. Parameter Settings 4. Functional Description 5. Interface Signals 6. Register Map 7. Test Features 8. Interlaken (2nd Generation) Intel® FPGA IP User Guide Archives 9. Document Revision History for Interlaken (2nd Generation) Intel® FPGA IP User Guide
1. Introduction x
1.1. Features 1.2. Device Family Support 1.3. Performance and Resource Utilization 1.4. Flexible Lanes Support 1.5. Round-trip Latency 1.6. Release Information
2. Getting Started x
2.1. Installing and Licensing Intel® FPGA IP Cores 2.2. Generated File Structure 2.3. Specifying the IP Core Parameters and Options 2.4. Simulating the IP Core 2.5. Compiling the Full Design and Programming the FPGA 2.6. Integrating Your IP Core in Your Design
2.1. Installing and Licensing Intel® FPGA IP Cores x
2.1.1. Intel® FPGA IP Evaluation Mode
2.6. Integrating Your IP Core in Your Design x
2.6.1. Pin Assignment 2.6.2. Adding the External PLL 2.6.3. PMA Adaptation Flow
3. Parameter Settings x
3.1. Main Parameters 3.2. PMA Adaptation Parameters
4. Functional Description x
4.1. Interfaces 4.2. IP Clocks 4.3. High Level Data Path Flow for Interlaken Mode 4.4. High Level Data Path Flow for Interlaken Look-aside Mode 4.5. Modes of Operation 4.6. Performance 4.7. IP Core Reset 4.8. M20K ECC Support 4.9. Out-of-Band Flow Control
4.3. High Level Data Path Flow for Interlaken Mode x
4.3.1. Interlaken TX Path 4.3.2. Interlaken RX Path 4.3.3. Unused Transceiver Channels
4.3.1. Interlaken TX Path x
4.3.1.1. Transmit Path Blocks 4.3.1.2. In-Band Calendar Bits on Transmit Side
4.3.2. Interlaken RX Path x
4.3.2.1. Receive Path Blocks 4.3.2.2. In-Band Calendar Bits on Receive Side 4.3.2.3. RX Errored Packet Handling
4.3.2.3. RX Errored Packet Handling x
4.3.2.3.1. Example With Errors and In-Band Calendar Bits
4.4. High Level Data Path Flow for Interlaken Look-aside Mode x
4.4.1. Interlaken Look-aside TX Path 4.4.2. Interlaken Look-aside RX Path
4.4.1. Interlaken Look-aside TX Path x
4.4.1.1. Transmit Path Blocks
4.4.2. Interlaken Look-aside RX Path x
4.4.2.1. Receive Path Blocks 4.4.2.2. RX Error Handling
4.5. Modes of Operation x
4.5.1. Interleaved and Packet Modes 4.5.2. Interlaken Mode 4.5.3. Interlaken Look-aside Mode 4.5.4. Multi-Segment Mode
4.5.2. Interlaken Mode x
4.5.2.1. Transmit User Data Interface Examples 4.5.2.2. Receive User Data Interface Example
4.5.3. Interlaken Look-aside Mode x
4.5.3.1. Transmit User Data Interface Example 4.5.3.2. Receive User Data Interface Examples
4.5.4. Multi-Segment Mode x
4.5.4.1. Multi-Segment Interface Example
5. Interface Signals x
5.1. Clock and Reset Interface Signals 5.2. Transmit User Interface Signals 5.3. Receive User Interface Signals 5.4. Management Interface Signals 5.5. Reconfiguration Interface Signals 5.6. Interlaken Link and Miscellaneous Signals 5.7. External PLL Interface Signals
7. Test Features x
7.1. Internal Serial Loopback Mode 7.2. External Loopback Mode
1. Introduction
2. Getting Started
3. Parameter Settings
4. Functional Description
5. Interface Signals
6. Register Map
7. Test Features
8. Interlaken (2nd Generation) Intel® FPGA IP User Guide Archives
9. Document Revision History for Interlaken (2nd Generation) Intel® FPGA IP User Guide

4.7. IP Core Reset

The Interlaken IP core variations have a single asynchronous reset, the reset_n signal. The Interlaken IP core manages the initialization sequence internally. After you de-assert reset_n (raise it after asserting it low), the IP core automatically goes through the entire reset sequence.

Note: Intel recommends that you hold the reset_n signal low for at least the duration of eight mm_clk cycles, to ensure the reset sequence proceeds correctly.

Following completion of the reset sequence internally, the Interlaken IP core begins link initialization. If your IP core and its Interlaken link partner initialize the link successfully, you can observe the assertion of the lane and link status signals according to the Interlaken specification. For example, you can monitor the tx_lanes_aligned, sync_locked, word_locked, and rx_lanes_aligned output status signals.

The required wait time from de-asserting the reset_n signal to safely accessing the IP core registers is a function of the internal reset controller.

For details on transceiver initialization, please refer to the Intel® Stratix® 10 L- and H-Tile Transceiver PHY User Guide or the E-Tile Transceiver PHY User Guide.

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