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1. Overview
2. Implementing the Transceiver PHY Layer in L-Tile/H-Tile
3. PLLs and Clock Networks
4. Resetting Transceiver Channels
5. Intel® Stratix® 10 L-Tile/H-Tile Transceiver PHY Architecture
6. Reconfiguration Interface and Dynamic Reconfiguration
7. Calibration
8. Debugging Transceiver Links
A. Logical View of the L-Tile/H-Tile Transceiver Registers
2.1. Transceiver Design IP Blocks
2.2. Transceiver Design Flow
2.3. Configuring the Native PHY IP Core
2.4. Using the Intel® Stratix® 10 L-Tile/H-Tile Transceiver Native PHY Intel® Stratix® 10 FPGA IP Core
2.5. Implementing the PHY Layer for Transceiver Protocols
2.6. Unused or Idle Transceiver Channels
2.7. Simulating the Native PHY IP Core
2.8. Implementing the Transceiver Native PHY Layer in L-Tile/H-Tile Revision History
2.3.1. Protocol Presets
2.3.2. GXT Channels
2.3.3. General and Datapath Parameters
2.3.4. PMA Parameters
2.3.5. PCS-Core Interface Parameters
2.3.6. Analog PMA Settings Parameters
2.3.7. Enhanced PCS Parameters
2.3.8. Standard PCS Parameters
2.3.9. PCS Direct Datapath Parameters
2.3.10. Dynamic Reconfiguration Parameters
2.3.11. Generation Options Parameters
2.3.12. PMA, Calibration, and Reset Ports
2.3.13. PCS-Core Interface Ports
2.3.14. Enhanced PCS Ports
2.3.15. Standard PCS Ports
2.3.16. Transceiver PHY PCS-to-Core Interface Reference Port Mapping
2.3.17. IP Core File Locations
2.4.2.1. Receiver Word Alignment
2.4.2.2. Receiver Clock Compensation
2.4.2.3. Encoding/Decoding
2.4.2.4. Running Disparity Control and Check
2.4.2.5. FIFO Operation for the Enhanced PCS
2.4.2.6. Polarity Inversion
2.4.2.7. Data Bitslip
2.4.2.8. Bit Reversal
2.4.2.9. Byte Reversal
2.4.2.10. Double Rate Transfer Mode
2.4.2.11. Asynchronous Data Transfer
2.4.2.12. Low Latency
2.5.1.1. Transceiver Channel Datapath for PIPE
2.5.1.2. Supported PIPE Features
2.5.1.3. How to Connect TX PLLs for PIPE Gen1, Gen2, and Gen3 Modes
2.5.1.4. How to Implement PCI Express (PIPE) in Intel® Stratix® 10 Transceivers
2.5.1.5. Native PHY IP Core Parameter Settings for PIPE
2.5.1.6. fPLL IP Core Parameter Settings for PIPE
2.5.1.7. ATX PLL IP Core Parameter Settings for PIPE
2.5.1.8. Native PHY IP Core Ports for PIPE
2.5.1.9. fPLL Ports for PIPE
2.5.1.10. ATX PLL Ports for PIPE
2.5.1.11. Preset Mappings to TX De-emphasis
2.5.1.12. How to Place Channels for PIPE Configurations
2.5.1.13. Link Equalization for Gen3
2.5.1.14. Timing Closure Recommendations
3.1. PLLs
3.2. Input Reference Clock Sources
3.3. Transmitter Clock Network
3.4. Clock Generation Block
3.5. FPGA Fabric-Transceiver Interface Clocking
3.6. Double Rate Transfer Mode
3.7. Transmitter Data Path Interface Clocking
3.8. Receiver Data Path Interface Clocking
3.9. Channel Bonding
3.10. PLL Cascading Clock Network
3.11. Using PLLs and Clock Networks
3.12. PLLs and Clock Networks Revision History
4.1. When Is Reset Required?
4.2. Transceiver PHY Reset Controller Intel® Stratix® 10 FPGA IP Implementation
4.3. How Do I Reset?
4.4. Using PCS Reset Status Port
4.5. Using Transceiver PHY Reset Controller Intel® Stratix® 10 FPGA IP
4.6. Using a User-Coded Reset Controller
4.7. Combining Status or PLL Lock Signals with User Coded Reset Controller
4.8. Resetting Transceiver Channels Revision History
4.3.1.1. Resetting the Transmitter After Power Up
4.3.1.2. Resetting the Transmitter During Device Operation
4.3.1.3. Resetting the Receiver After Power Up
4.3.1.4. Resetting the Receiver During Device Operation (Auto Mode)
4.3.1.5. Clock Data Recovery in Manual Lock Mode
4.3.1.6. Special TX PCS Reset Release Sequence
4.5.1. Parameterizing Transceiver PHY Reset Controller Intel® Stratix® 10 FPGA IP
4.5.2. Transceiver PHY Reset Controller Intel® Stratix® 10 FPGA IP Parameters
4.5.3. Transceiver PHY Reset Controller Intel® Stratix® 10 FPGA IP Interfaces
4.5.4. Transceiver PHY Reset Controller Intel® Stratix® 10 FPGA IP Resource Utilization
5.1. PMA Architecture
5.2. Enhanced PCS Architecture
5.3. Intel® Stratix® 10 Standard PCS Architecture
5.4. Intel® Stratix® 10 PCI Express Gen3 PCS Architecture
5.5. PCS Support for GXT Channels
5.6. Square Wave Generator
5.7. PRBS Pattern Generator
5.8. PRBS Pattern Verifier
5.9. Loopback Modes
5.10. Intel® Stratix® 10 L-Tile/H-Tile Transceiver PHY Architecture Revision History
5.1.2.1.1. Programmable Differential On-Chip Termination (OCT)
5.1.2.1.2. Signal Detector
5.1.2.1.3. Continuous Time Linear Equalization (CTLE)
5.1.2.1.4. Variable Gain Amplifier (VGA)
5.1.2.1.5. Adaptive Parametric Tuning (ADAPT) Engine
5.1.2.1.6. Decision Feedback Equalization (DFE)
5.1.2.1.7. On-Die Instrumentation
5.2.1.1. TX Core FIFO
5.2.1.2. TX PCS FIFO
5.2.1.3. Interlaken Frame Generator
5.2.1.4. Interlaken CRC-32 Generator
5.2.1.5. 64B/66B Encoder and Transmitter State Machine (TX SM)
5.2.1.6. Scrambler
5.2.1.7. Interlaken Disparity Generator
5.2.1.8. TX Gearbox, TX Bitslip and Polarity Inversion
5.2.1.9. KR FEC Blocks
5.2.2.1. RX Gearbox, RX Bitslip, and Polarity Inversion
5.2.2.2. Block Synchronizer
5.2.2.3. Interlaken Disparity Checker
5.2.2.4. Descrambler
5.2.2.5. Interlaken Frame Synchronizer
5.2.2.6. 64B/66B Decoder and Receiver State Machine (RX SM)
5.2.2.7. 10GBASE-R Bit-Error Rate (BER) Checker
5.2.2.8. Interlaken CRC-32 Checker
5.2.2.9. RX PCS FIFO
5.2.2.10. RX Core FIFO
5.3.1.4.1. 8B/10B Encoder Control Code Encoding
5.3.1.4.2. 8B/10B Encoder Reset Condition
5.3.1.4.3. 8B/10B Encoder Idle Character Replacement Feature
5.3.1.4.4. 8B/10B Encoder Current Running Disparity Control Feature
5.3.1.4.5. 8B/10B Encoder Bit Reversal Feature
5.3.1.4.6. 8B/10B Encoder Byte Reversal Feature
5.3.2.1.1. Word Aligner Bitslip Mode
5.3.2.1.2. Word Aligner Manual Mode
5.3.2.1.3. Word Aligner Synchronous State Machine Mode
5.3.2.1.4. Word Aligner Deterministic Latency Mode
5.3.2.1.5. Word Aligner Pattern Length for Various Word Aligner Modes
5.3.2.1.6. Word Aligner RX Bit Reversal Feature
5.3.2.1.7. Word Aligner RX Byte Reversal Feature
5.3.2.6.1. Byte Deserializer Disabled Mode
5.3.2.6.2. Byte Deserializer Deserialize x2 Mode
5.3.2.6.3. Byte Deserializer Deserialize x4 Mode
5.3.2.6.4. Bonded Byte Deserializer
5.3.2.6.5. Byte Ordering Register-Transfer Level (RTL)
5.3.2.6.6. Byte Serializer Effects on Data Propagation at the RX Side
5.3.2.6.7. ModelSim Byte Ordering Analysis
6.1. Reconfiguring Channel and PLL Blocks
6.2. Interacting with the Reconfiguration Interface
6.3. Multiple Reconfiguration Profiles
6.4. Arbitration
6.5. Recommendations for Dynamic Reconfiguration
6.6. Steps to Perform Dynamic Reconfiguration
6.7. Direct Reconfiguration Flow
6.8. Native PHY IP or PLL IP Core Guided Reconfiguration Flow
6.9. Reconfiguration Flow for Special Cases
6.10. Changing Analog PMA Settings
6.11. Ports and Parameters
6.12. Dynamic Reconfiguration Interface Merging Across Multiple IP Blocks
6.13. Embedded Debug Features
6.14. Timing Closure Recommendations
6.15. Unsupported Features
6.16. Transceiver Register Map
6.17. Reconfiguration Interface and Dynamic Revision History
7.5.1. Recalibrating a Duplex Channel (Both PMA TX and PMA RX)
7.5.2. Recalibrating the PMA RX Only in a Duplex Channel
7.5.3. Recalibrating the PMA TX Only in a Duplex Channel
7.5.4. Recalibrating a PMA Simplex RX Without a Simplex TX Merged into the Same Physical Channel
7.5.5. Recalibrating a PMA Simplex TX Without a Simplex RX Merged into the Same Physical Channel
7.5.6. Recalibrating Only a PMA Simplex RX in a Simplex TX Merged Physical Channel
7.5.7. Recalibrating Only a PMA Simplex TX in a Simplex RX Merged Physical Channel
7.5.8. Recalibrating the fPLL
7.5.9. Recalibrating the ATX PLL
7.5.10. Recalibrating the CMU PLL When it is Used as a TX PLL
A.4.1. Transmitter PMA Logical Register Map
A.4.2. Receiver PMA Logical Register Map
A.4.3. Pattern Generators and Checkers
A.4.4. Loopback
A.4.5. Optional Reconfiguration Logic PHY- Capability
A.4.6. Optional Reconfiguration Logic PHY- Control & Status
A.4.7. Embedded Streamer (Native PHY)
A.4.8. Static Polarity Inversion
A.4.9. Reset
A.4.10. CDR/CMU and PMA Calibration
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6.6. Steps to Perform Dynamic Reconfiguration
You can dynamically reconfigure blocks in the transceiver channel or PLL through the reconfiguration interface. The following procedure shows the steps required to reconfigure the channel and PLL blocks.
- Check the Enable Dynamic Reconfiguration option in the Dynamic Reconfiguration tab in the Native PHY IP.
- Select the desired configuration file type under Configuration Files option in the Native PHY IP.
- Enable the desired dynamic reconfiguration features (such as multiple reconfiguration profiles, or feature blocks (such as embedded reconfiguration streamer and NPDME).
- If you are using:
- Direct reconfiguration flow—Refer to the Logical View of the L-Tile/H-Tile Transceiver Registers for feature address and valid value of write data for the feature.
- IP guided reconfiguration flow—Note the settings of the base configuration and generate the corresponding configuration files. Also observe the settings of the modified configuration and generate the corresponding configuration files. Find out the differences in settings between the base and modified configurations.
- IP guided reconfiguration flow using multiple profiles—Create and store the parameter settings between the various configurations or profiles using configuration files. Find out the differences in settings between the various configurations or profiles using configuration files.
- IP guided reconfiguration flow using the embedded streamer—Refer to the Logical View of the L-Tile/H-Tile Transceiver Registers of the embedded reconfiguration streamer to stream the desired profile settings.
- Reconfiguration flow for special cases—Refer to the lookup registers to be accessed for each special case, such as TX PLL switching, TX PLL reference clock switching, and RX CDR reference clock switching.
- Assert the required channel resets (if necessary). Refer to Recommendations for Dynamic Reconfiguration for details on which resets need to be asserted.
- If you are reconfiguring across data rates or protocol modes or enabling/disabling PRBS, place the channels in reset.
- If you have background calibration enabled, disable it by setting channel offset address 0x542[0] to 0x0.
You disabled it successfully if 0x542[0] = 0x0, 0x481[2] = 0x0, or reconfig_waitrequest is low.
- You must perform this step only if you are reconfiguring fPLL/ATX PLL/CDR/CMU PLL. Otherwise, go to step 11. Request PreSICE to configure the fPLL/ATX PLL/CDR/CMU PLL in preparation for reconfiguration by setting the pre_reconfig bit for the fPLL/ATX PLL/CDR/CMU PLL.
- 1’b1: Request PreSICE to configure the fPLL/ATX PLL/CDR/CMU PLL in reconfiguration mode.
- 1'b0: Reconfiguration mode not requested.
- You must perform this step only if you are reconfiguring fPLL/ATX PLL/CDR/CMU PLL. Otherwise, go to step 11. Also make sure you have performed step 8 before performing this step. Return the internal configuration bus access to PreSICE by writing a 0x01 to address 0x000 of the fPLL/ATX PLL/CDR/CMU PLL, and wait for PreSICE to complete the operation by monitoring the pll_cal_busy or rx_cal_busy signal or reading the pll_cal_busy or rx_cal_busy signal status from the status registers.
- You must perform this step if you are reconfiguring the fPLL/ATX PLL/CDR/CMU PLL. Otherwise, go to step 11. Also, make sure you have performed step 9 before performing this step. Request internal configuration bus arbitration from PreSICE.
- Perform the necessary reconfiguration using the flow described in the following sections: Direct Reconfiguration Flow, Native PHY or PLL IP Guided Reconfiguration Flow, and Reconfiguration Flow for Special Cases.
- Perform all necessary reconfiguration. If reconfiguration involved datarate or protocol mode changes, you may have to reconfigure the PMA analog parameters of the channels. Refer to Changing PMA Analog Parameters for more details.
- If reconfiguration involved datarate or protocol mode changes, request recalibration, and wait for the calibration to complete. Calibration is complete when tx_cal_busy or rx_cal_busy or pll_cal_busy is deasserted. For more details about calibration registers and the steps to perform recalibration, refer to Calibration.
- If desired, enable background calibration by setting channel offset address 0x542[0] to 0x1.
- The background calibration feature is only available for H-tile production devices starting with Intel® Quartus® Prime Design Suite 18.1 and if the data rate is >= 17.5 Gbps.
- Refer to Background Calibration for more information.
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