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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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2.4.4.4.3. How to Enable ODI
This procedure enables ODI through the Avalon® memory-mapped interface, allowing you to view the eye.
- If the device is H-tile production and background calibration is enabled, disable the background calibration:
- Set 0x542[0] to 0x0.
- Read 0x481[2] until it becomes 0x0.
- If the RX adaptation mode is set to manual23, set 0x148[0] to 0x1 to release adaptation from reset. Otherwise, skip this step.
- Set 0x169[6] to 0x1 to enable the counter to detect error bits.
- Set 0x168[0] to 0x1 to enable the serial bit checker for ODI.
- If the DFE is enabled 24:
- Set 0x169[2] to 0x1 to enable DFE speculation.
- Set 0x149[5:0] to 0x07 to read the DFE tap signs.
- Read 0x17F[6] 25, and store it as DFE_tap1_sign.
- If the DFE is disabled24:
- Set 0x169[2] to 0x0 to disable DFE speculation.
- Trade off between the ODI runtime and BER resolution by setting the number of bits to count before stopping at each horizontal or vertical point combination. Set {0x169[1:0], 0x168[5]} to:
- Count up to 216: 0x0.
- Count up to 106: 0x1.
- Count up to 107: 0x2.
- Count up to 108: 0x3.
- Count up to 3 x 108: 0x4.
- Count up to 109: 0x5.
- Count up to 232: 0x6.
- Set 0x158[5] to 0x1 to enable serial bit checker control.
- Set 0x12D[4] to 0x0 to disable the path from the DFE to the Avalon® memory-mapped interface testmux.
- If the device is H-tile production, configure the ODI bandwidth for the desired data rate by setting register {0x145[7], 0x144[7]} to the corresponding value from the following table .
Table 94. ODI Bandwidth Data Rate Settings for H-Tile Production Data Rate Register Setting > 25 Gbps 0x0 25 Gbps ≥ data rate > 16 Gbps 0x2 16 Gbps ≥ data rate > 10 Gbps 0x1 Data rate ≤ 10 Gbps 0x3 - If the device is not H-tile production, configure the ODI bandwidth for the desired data rate by setting register {0x145[7], 0x144[7]} to the corresponding value from the following table .
Table 95. ODI Bandwidth Data Rate Settings for Non-H-Tile Production Tiles Data Rate Register Setting > 20 Gbps 0x0 20 Gbps ≥ data rate > 12.5 Gbps 0x2 12.5 Gbps ≥ data rate > 6.5 Gbps 0x1 Data rate ≤ 6.5 Gbps 0x3 - Set 0x144[6:4] to 0x0 to set the ODI phase interpolator to 128.
- Set 0x140[5:3] to 0x0 to disable the ODI test pattern generator.
- Set 0x13C[0] to 0x0, then set it to 0x1 to reset then release the reset on the serial bit checker control logic.
- Set 0x171[4:1] to 0xB, to configure the Avalon® memory-mapped interface testmux to read the ODI counter values.
To save time, you can sweep the horizontal eye opening across 128 phase steps with the vertical phase set to zero. This helps determine the extent of the eye opening. Then, you can perform a refined horizontal or vertical eye sweep to capture the two-dimensional eye diagram.
23 To determine RX adaptation mode, read 0x161[5]. RX adaptation is in manual mode when 0x161[5] = 1.
24 To determine DFE mode, read 0x161[6]. DFE is disabled when 0x161[6] = 1.
25 Wait 25 µs between setting register 0x149[5:0] and reading 0x17E or 0x17F.