Intel® Agilex™ Configuration User Guide

ID 683673
Date 7/05/2022

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2.7. Intel® Agilex™ Configuration Time Estimation

This section describes configuration time for various configuration modes for different bitstream sizes. For example, in PCIe* designs, your system software may require the Intel® Agilex™ device to enter user mode in less than 1 second to return a successful completion status for a valid configuration request. Use the values referenced below to determine the configuration mode that best suits your design requirements.

The table provides time estimates for the full FPGA configuration only. In HPS enabled designs, the table also considers the FPGA configuration first mode. Note that the HPS boot first mode in HPS enabled designs is not considered. Also, the CvP periphery image configuration is not considered. In general, if you use the Micron flash device for AS x4 configuration, the CvP periphery image configuration time is expected to be less than 100 ms.

The following conditions were used to estimate the configuration time values:
  • Set the VID mode of operation to PMBus Master mode
  • Use Intersil ISL68137 regulator to regulate the PMBus
  • Set configuration clock source to OSC_CLK_1 with 25/100/125 MHz
  • No advanced security features were enabled
  • For AVST x8/x16/x32 configuration modes, set the AVST_CLK to 125 MHz. The external host controller supplies the AVST_DATA by asserting the AVST_VALID signal high whenever the AVST_READY signal is high.
  • For AS x4 configuration mode, set the AS_CLK to 166 MHz. Use a Micron device with a 2 Gb density range QSPI flash memory.
Table 14.  Configuration Time for Various Configuration Modes The data in this table is preliminary. Avalon® streaming interface x32 configuration time estimates are not yet available.
Device Bitstream File Size (MB) Configuration Time Estimation (ms)
AS x4 7 AVST x8 AVST x16

AGF 012

AGF 014

2.5 250 170 150
26 570 330 230
33 670 380 260

AGI 022

AGI 027

3.6 440 370 370
28 770 540 440
61 1,210 760 550
7 For non-Micron QSPI flash memory, the AS x4 configuration time increases by 126 ms.

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