Agilex™ 7 F-Series and I-Series Known Issue List

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ID 683584
Date 3/13/2025
Public
Document Table of Contents
Document Table of Contents x
1. About this Document 2. Known Issue List for Agilex™ 7 Devices 3. Arm* Cortex*-A53 MPCore and CoreSight* Errata 4. Agilex™ 7 F-Series and I-Series User Guidelines 5. Document Revision History for the Agilex™ 7 F-Series and I-Series Known Issue List
2. Known Issue List for Agilex™ 7 Devices x
2.1. FPGA 2.2. Hard Processor System
2.1. FPGA x
2.1.1. F-Tile 2.1.2. R-Tile 2.1.3. P-Tile 2.1.4. Configuration and Security
2.1.1. F-Tile x
2.1.1.1. 200G/400G Ethernet Mode Does Not Support Port-Based Priority Flow Control 2.1.1.2. The F-Tile Ethernet Intel FPGA 200G Hard IP block is de-featured and cannot be used in production devices with OPNs that have no suffix (blank) or 'B' suffix 2.1.1.3. The Deterministic Latency Feature supports on E200 block Six of Eight FGT Channels 2.1.1.4. FHT TX EOJ Spec Compliance Issue 2.1.1.5. Requirement for F-Tile Devices which are Powered and Unconfigured 2.1.1.6. FGT PAM4 Bounding Solution 2.1.1.7. FGT Transceivers Do Not Support Direct EXTEST JTAG Instruction in Boundary Scan Test 2.1.1.8. F-Tile: Unsuccessful TX Equalization 2.1.1.9. Link May Not Downgrade With Corrupt Lanes (F-Tile) 2.1.1.10. Intermittent Equalization Timeout or Speed Degrade during Link Disable, Hot Reset, and Speed Change 2.1.1.11. Link Fault Detection window of the F-Tile Ethernet Intel FPGA Hard IP in 10GE-1 or 25GE-1 mode 2.1.1.12. FHT PMA Transmitter-to-Receiver Internal Serial Loopback operation for error-free BER results 2.1.1.13. F-Tile Ethernet Intel FPGA Hard IP rst_tx_stats and rst_rx_stats register bits might not function correctly 2.1.1.14. F-Tile Ethernet Intel FPGA Hard IP force_rf register bit might not function correctly 2.1.1.15. F-Tile Ethernet Intel FPGA Hard IP tx_pause_request register bit might not function correctly 2.1.1.16. F-Tile Ethernet Intel FPGA Hard IP PTP statistics might not clear correctly 2.1.1.17. F-Tile Ethernet Intel FPGA Hard IP unable to achieve 100% throughput with some variants Description Workaround Status
2.1.2. R-Tile x
2.1.2.1. Gen3/Gen4 link might be established without successfully performing Transmit Equalization (TX EQ) 2.1.2.2. Link may not downgrade with corrupt lanes 2.1.2.3. Malformed TLP incorrectly flagged as ECRC error 2.1.2.4. Assertion of PERST / warm reset during the Functional Level Reset results in PCIe* Link Failure 2.1.2.5. No Support for Page Request Services in Port 2 and Port 3 of 4x4 Configuration 2.1.2.6. Multiple Fatal Error Messages 2.1.2.7. PCIe* x4 cores may report Uncorrectable Fatal Error or Malformed TLP 2.1.2.8. Receiver Errors logged during back-to-back Secondary Bus Resets (SBR) operations when running at Gen 2 speed 2.1.2.9. R-Tile Digital Temperature Sensor Readings 2.1.2.10. R-Tile PCIe* - LCRC Error/Malformed TLP 2.1.2.11. R-Tile PIPE-Direct - rxdatavalid Signal Unexpected Toggling After P1 to P0 Transition 2.1.2.12. Polling.Active time out during Link Disable-Enable loop tests 2.1.2.13. R-Tile PCIe* - Intermittent PCIe* Gen4 EQ time out 2.1.2.14. No response received during read operation on the xcvr_reconfig interface after an FPGA re-configuration 2.1.2.15. Slow Completion response from Configuration requests targeting R-Tile Endpoint connected to Downstream port with finite Completion Header/Data credits 2.1.2.16. Bifurcated ports using Independent PERST pins might fail to link up after configuration is complete 2.1.2.17. Port0 might be stuck in Detect when configuring bifurcated ports using Independent PERST pins 2.1.2.18. CXL 1.1 version does not support uncorrectable error reporting when receiving two LLCTRL-Init packet
2.1.3. P-Tile x
2.1.3.1. Root Port Legacy Interrupt Status register INTx is stuck HIGH 2.1.3.2. TLP Bypass Error Status register may report receiver errors after the PERST is released 2.1.3.3. Register Implementation while using the SR-IOV Feature 2.1.3.4. Register Implementation while using the Multi-function Feature 2.1.3.5. P-Tile: Unsuccessful TX Equalization 2.1.3.6. Link May Not Degrade With Corrupt Lanes (P-Tile) 2.1.3.7. Warm Reset or PERST Assertion Clears the Sticky Registers 2.1.3.8. Multiple Fatal Error Messages
2.1.4. Configuration and Security x
2.1.4.1. FPGA Reconfiguration May Cause Device to Halt 2.1.4.2. Secure Device Manager May Disable Physically Unclonable Function
2.2. Hard Processor System x
2.2.1. Write Data Can Appear at an AXI Interface before the Write Address, which can Cause a Deadlock Condition
3. Arm* Cortex*-A53 MPCore and CoreSight* Errata x
3.1. 843819: Memory Locations May be Accessed Speculatively Due to Instruction Fetches When HCR.VM is Set 3.2. 845719: A Load May Read Incorrect Data 3.3. 855871: ETM Does Not Report IDLE State When Disabled Using OSLOCK 3.4. 855872: A Store-Exclusive Instruction Might Pass When it Should Fail 3.5. 711668: Configuration Extension Register Has Wrong Value Status 3.6. 720107: Periodic Synchronization Can Be Delayed and Cause Overflow 3.7. 855873: An Eviction Might Overtake a Cache Clean Operation 3.8. 853172: ETM May Assert AFREADY Before All Data Has Been Output 3.9. 836870: Non-Allocating Reads May Prevent a Store Exclusive From Passing 3.10. 836919: Write of the JMCR in EL0 Does Not Generate an UNDEFINED Exception 3.11. 845819: Instruction Sequences Containing AES Instructions May Produce Incorrect Results 3.12. 851672: ETM May Trace an Incorrect Exception Address 3.13. 851871: ETM May Lose Counter Events While Entering WFx Mode 3.14. 852071: Direct Branch Instructions Executed Before a Trace Flush May be Output in an Atom Packet After Flush Acknowledgment 3.15. 852521: A64 Unconditional Branch May Jump to Incorrect Address 3.16. 855827: PMU Counter Values May Be Inaccurate When Monitoring Certain Events 3.17. 855829: Reads of PMEVCNTR<n> are not Masked by HDCR.HPMN 3.18. 855830: Loads of Mismatched Size May not be Single-Copy Atomic
1. About this Document
2. Known Issue List for Agilex™ 7 Devices
3. Arm* Cortex*-A53 MPCore and CoreSight* Errata
4. Agilex™ 7 F-Series and I-Series User Guidelines
5. Document Revision History for the Agilex™ 7 F-Series and I-Series Known Issue List

2.1.1.17. F-Tile Ethernet Intel FPGA Hard IP unable to achieve 100% throughput with some variants

Description

When using the F-Tile Ethernet Intel FPGA Hard IP in the configurations captured in the below table, the IP is unable to achieve 100% throughput by the small amounts shown. This is due to the fact that the hard MAC within the IP is not removing IDLE characters in order to compensate for Alignment Marker (AM) insertion.

Table 19.  
Data Rate FEC Mode Throughput Loss? PPM Impact Throughput Loss as a % of Full Line Rate
10G NO_FEC/FC_FEC NO NO NO
25G NO_FEC NO NO NO
25G FC_FEC NO NO NO
25G RS_FEC YES 48.828125 .0048
40G NO_FEC/RS_FEC YES 61.03515625 .0061
50G NO_FEC/RS_FEC YES 48.828125 .0048
100G NO_FEC/RS_FEC YES 61.03515625 .0061
200G RS_FEC YES 48.828125 .0048
400G RS_FEC YES 48.828125 .0048

Workaround

Potential workarounds to achieve 100% throughput with the IP include overclocking the TX reference clock to compensate for PPM loss, adjusting the MIN_AVG_IPG value from 12 to 10, or using a soft MAC IP where applicable.

Status

Table 20.  Device Status Table
Devices Affected Planned Fix
  • AGFxxxxxxxxxxxx
  • AGIxxxxxxxxxxxx
None
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