2. Known Issue List for Agilex™ 3 Devices

Agilex™ 3 Known Issue List

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ID 855394

Date 11/14/2025

Version current

Public

2. Known Issue List for Agilex™ 3 Devices

This section lists the known issues for the Agilex™ 3 production devices. Each listed issue has an associated status that identifies any planned fixes.

Table 2. Device Issues
Issue	Affected Devices (OPN)	Planned Fix (OPN)	Document Update	Notification
FPGA
Transceiver
Occasional equalization timeout or PCIe link training failure to achieve expected link speed during speed change, hot reset, and link disable	A3Cx100BM16A`xxx` A3Cx135BM16A`xxx`	No planned fix	N/A	N/A
Both ERR_COR and ERR_FATAL messages are sent when TLP with ECRC error is received	A3Cx100BM16A`xxx` A3Cx135BM16A`xxx`	No planned fix	N/A	N/A
Multiple error messages are generated by the multifunction device when a non-function-specific error occurs	A3Cx100BM16A`xxx` A3Cx135BM16A`xxx`	No planned fix	N/A	N/A
Transmission of all Ethernet frames is suspended upon reception of PAUSE frame request from External link partner	A3Cx100BM16A`xxx` A3Cx135BM16A`xxx`	No planned fix	N/A	N/A
Reduced Reference Clock Frequency Options for Certain Output Frequencies in GTS System PLL Clocks IP	A3C`x`100BM16A`xxx` A3C`x`135BM16A`xxx`	No planned fix	N/A	Customer Advisory to be published
DisplayPort IP Performance Instability Issue	A3CW135BM16A`xxx` A3CY135BM16A`xxx`	This issue is planned to be fixed in a future release of the Quartus® Prime Pro Edition	N/A	N/A
IEEE 1588v2 PTP Accuracy Issue for GTS Ethernet Hard IP for 10GE Rate Designs	A3C`x`100BM16A`xxx` A3C`x`135BM16A`xxx`	This issue is planned to be fixed in a future release of the Quartus® Prime Pro Edition	N/A	N/A
EMIF
No support for unaligned access to EMIF interfaces using Fabric Direct Access mode or HPS F2SDRAM bridge	A3CW100B`xxxxxxx` A3CW135B`xxxxxxx` A3CY100B`xxxxxxx` A3CY135B`xxxxxxx`	No planned fix	N/A	N/A
Lower than expected efficiency for sequential access pattern on fabric EMIF when using secondary memory controller	A3CW100B`xxxxxxx` A3CW135B`xxxxxxx` A3CY100B`xxxxxxx` A3CY135B`xxxxxxx`	No planned fix	N/A	N/A
HPS
The USB 3.1 controller has a spillover condition during IN transfers for bulk endpoint which causes a DBE issue for the ISOC-IN Endpoint	A3CW100BM16A`xxx` A3CW135BM16A`xxx`	No planned fix	N/A	N/A
USB 3.1 Controller Device Drops eSS ISOC Data if the ITP Delta Value is Greater than 63 units	A3CW100BM16A`xxx` A3CW135BM16A`xxx`	No planned fix	N/A	N/A
The USB 3.1 controller has a possible glitch on the clock output during U3 to U0 power state transition	A3CW100BM16A`xxx` A3CW135BM16A`xxx`	No planned fix	N/A	N/A
HPS GICv3 ITS unable to access physical memory larger than 32 bits causing MSI-X Interrupt failure	A3CW100BM16A`xxx` A3CW135BM16A`xxx`	No planned fix	N/A	Customer Advisory to be published
SD/eMMC Host Controller Capabilities Register provides incorrect information with regard to 8-bit Embedded Device Support	A3CW100BM16A`xxx` A3CW135BM16A`xxx`	No planned fix	N/A	Customer Advisory to be published