If you use a third-party programmer to program an
.rpd
, ensure that the configuration data is stored starting from address 0
of the serial flash device. If you use
.jic
or
.pof
files, the Intel Agilex Programmer automatically programs the
configuration data starting from address 0 of the serial flash device.
3.2.7.1. Understanding Quad SPI Flash Byte-Addressing
At power-on the SDM operates from boot ROM. The SDM loads configuration firmware from Quad SPI flash using 3-byte
addressing. Once loaded, if the flash size is 256 Mb or larger, the SDM configures the Quad SPI flash to operate in 4-byte
addressing mode and continues to load the rest of the bitstream until configuration completes.
Intel Agilex devices support the following third-party flash devices operating at 1.8 V:
•
Macronix MX66U 512 Mb, 1 and 2 gigabits (Gb)
•
Macronix MX25U 128 Mb, 256 Mb, and 512 Mb
•
Micron MT25QU 128 Mb, 256 Mb, 512 Mb, 1 Gb, and 2 Gb
Micron and Macronix both offer Quad SPI memories with a density range of 128Mb—2Gb.
3.2.8. AS_CLK
The Intel Agilex device drives
AS_CLK
to the serial flash device. An internal oscillator or the external clock that drives the
OSC_CLK_1
pin generates
AS_CLK
. Using an external clock source allows the
AS_CLK
to run at a higher frequency. If you
provide a 25 MHz, 100 MHz, or 125 MHz clock to the
OSC_CLK_1
pin, the
AS_CLK
can run up to 133 MHz.
Set the maximum required frequency for the
AS_CLK
pin in the Intel Quartus Prime software as described in
Configuration Software Settings
on page 116. The
AS_CLK
pin runs at or below your selected frequency.
Table 36.
Supported Configuration Clock Source and
AS_CLK
Frequencies in Intel Agilex Devices
The table displays valid
AS_CLK
settings for the respective configuration clock source.
Configuration Clock Source
AS_CLK
Frequency (MHz)
Internal oscillator
25
58
77
115
OSC_CLK_1
(25/100/125 MHz)
25
continued...
3. Intel Agilex Configuration Schemes
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Intel
®
Agilex
™
Configuration User Guide
115
