2.1.1.1. Requirement for F-Tile Devices which are Powered and Unconfigured
2.1.1.2. FGT PAM4 Compliance Support
2.1.1.3. FGT Transceivers Do Not Support Direct EXTEST JTAG Instruction in Boundary Scan Test
2.1.1.4. F-Tile: Unsuccessful TX Equalization
2.1.1.5. Link May Not Downgrade With Corrupt Lanes (F-Tile)
2.1.1.6. Occasional Equalization Timeout or PCIe Link Training Failure to Achieve Expected Link Speed during Link Disable, Hot Reset, and Speed Change
2.1.1.7. Link Fault Detection window of the F-Tile Ethernet Hard IP in 10GE-1 or 25GE-1 mode
2.1.1.8. FHT PMA Transmitter-to-Receiver Internal Serial Loopback operation for error-free BER results
2.1.1.9. F-Tile Ethernet Hard IP rst_tx_stats and rst_rx_stats register bits might not function correctly
2.1.1.10. F-Tile Ethernet Hard IP force_rf register bit might not function correctly
2.1.1.11. F-Tile Ethernet Hard IP tx_pause_request register bit might not function correctly
2.1.1.12. F-Tile Ethernet Hard IP PTP statistics might not clear correctly
2.1.1.13. F-Tile Ethernet Hard IP unable to achieve 100% throughput with some variants
2.1.1.14. F-Tile 400G Ethernet IP RX Priority Flow Control Issue
2.1.1.15. F-Tile Ethernet Hard IP Bidirectional Link Fault Signaling Issue
2.1.1.16. F-Tile SDI II IP and F-Tile PMA/FEC Direct PHY IP with “SDI” configuration rule are not of production quality
2.1.1.17. F-Tile HDMI IP and F-Tile PMA/FEC Direct PHY IP with 'HDMI' configuration rule are not of production quality
2.1.1.18. Ethernet Auto-Negotiation and Link Training (AN/LT) designs on F-Tile FGT may not link up when using Quartus Prime Pro Edition software version 25.1.1 and 25.3
2.1.1.19. IEEE 802.3-2022 50GBASE-KR compliance testing instability during Link Training (LT)
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. Polling.Active time out during Link Disable-Enable loop tests
2.1.2.10. CXL 1.1 version does not support uncorrectable error reporting when receiving two LLCTRL-Init packet
2.1.2.11. R-tile might report Fatal Error in the Advance Error Reporting (AER) registers when using Address Translation Service (ATS)
2.2.1. DDR5 x32 + user bits through NoC is not supported
2.2.2. PhyMux EMIF lockstep pinout configurations Restrictions
2.2.3. GPIO-B blocked in mixed GPIO-B/EMIF use cases
2.2.4. DDR4 rDBI is not working
2.2.5. LPDDR5 and DDR5 reduced sequential write/read bandwidth when using Fabric Sync Fabric direct mode in x16 2-channel configuration
2.2.6. LPDDR5 and DDR5 maximum bandwidth for sequential short write is limited
2.2.7. LPDDR5 and DDR5 controller does not support non-aligned transactions
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
2.6.1. HPS EMAC RX Interface In Unresponsive State
Description
The HPS EMAC RX may become unresponsive for the following network conditions:
- Line Rate: 1 Gbps
- Feature: Hardware Timestamp for Precision Time Protocol (PTP) enabled.
- Packet Types: Back-to-back (b2b) packets, multicast packets, or any packet with the least significant bit (LSB) set to '1' in the header of the next packet.
When receiving network packets with the above conditions, the EMAC interface may become blocked, as indicated by the EMAC DMA Register 5 (Status Register) (dma_grp_status at address offset 0x1014). The signature of this error is when the following bits are set in the Status Register:
- Bit 19:17: “3'b100: SUSPEND - Suspended: Receive Descriptor Unavailable”
- Bit 22:20: “3'b110: SUSPTX - Suspended; Transmit Descriptor Unavailable or Transmit Buffer Underflow”
- Bit 25:23: “0 0 0: Error during Rx DMA Write Data Transfer”
The issue occurs when the status of an earlier packet has not yet been forwarded, and bit 0 of the first word of the next packet read from the Rx FIFO has a value of ‘1’. This sequence causes the internal state machine to hang.
The issue can be triggered by sending User Datagram Protocol (UDP) data packets and PTP traffic with hardware timestamping enabled on the device.
Impact
Under high traffic conditions, this issue can impact the functionality of the EMAC, potentially causing network communication disruptions.
Workaround
To mitigate this issue for a 1 Gbps line rate, Altera recommends using software-based timestamping instead of the hardware timestamp feature.
If hardware PTP is required, use a 10 Mbps or 100 Mbps line rate. For other use cases that match this error signature, try with 10 Mbps/100 Mbps line rate.
Status
| Devices Affected | Planned Fix |
|---|---|
|
No planned fix |