Table 25.
PFL II Flash Programming Parameters
Options
Value
Description
Flash programming IP
optimization target
• Area
• Speed
Specifies the flash programming IP optimization. If you optimize the PFL II IP core for
Speed, the flash programming time is shorter, but the IP core uses more LEs. If you
optimize the PFL II IP core for Area, the IP core uses fewer LEs, but the flash
programming time is longer.
Flash programming IP
FIFO size
• 16
• 32
Specifies the FIFO size if you select Speed for flash programming IP optimization. The PFL
II IP core uses additional LEs to implement FIFO as temporary storage for programming
data during flash programming. With a larger FIFO size, programming time is shorter.
Add Block-CRC
verification
acceleration support
• On
• Off
Adds a block to accelerate verification.
Table 26.
PFL II FPGA Configuration Parameters
Options
Value
Description
What is the external
clock frequency?
Provide the frequency of your external clock.
Specifies the user-supplied clock frequency for the IP core to configure the FPGA. The
clock frequency must not exceed two times the maximum clock (
AVST_CLK
) frequency
the FPGA can use for configuration. The PFL II IP core can divide the frequency of the
input clock maximum by two.
What is the flash
access time?
Provide the access time from the flash data sheet.
Specifies the flash access time. This information is available from the flash datasheet.
Intel recommends specifying a flash access time that is equal to or greater than the
required time.
For CFI parallel flash, the unit is in ns. For NAND flash, the unit is in μs. NAND flash uses
pages instead of bytes and requires greater access time. This option is disabled for quad
SPI flash.
What is the byte
address of the option
bits, in hex?
Provide the byte address of the option bits.
Specifies the option bits start address in flash memory. The start address must reside on
an 8 KB boundary. This address must be the same as the bit sector address you specified
when converting the
.sof
to a
.pof
.
For more information refer to Storing Option Bits.
Which FPGA
configuration scheme
will be used?
• Avalon-ST x8
• Avalon-ST x16
• Avalon-ST x32
Specifies the width of the Avalon-ST interface.
What should occur on
configuration failure?
• Halt
• Retry same page
• Retry from fixed address
Configuration behavior after configuration failure.
continued...
3. Intel Agilex Configuration Schemes
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Intel
®
Agilex
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Configuration User Guide
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