Altera Parallel Flash Loader IP User Manual
Page 16
Table 4: Option Bits Sector Format
Offset address
0x80
stores the
.pof
version required for programming flash memory. This
.pof
version applies to all
eight pages of the configuration data. The PFL IP core requires the
.pof
version to perform a successful FPGA
configuration process.
Sector Offset
Value
0x00
–
0x03
Page 0 start address
0x04
–
0x07
Page 1 start address
0x08
–
0x0B
Page 2 start address
0x0C
–
0x0F
Page 3 start address
0x10
–
0x13
Page 4 start address
0x14
–
0x17
Page 5 start address
0x18
–
0x1B
Page 6 start address
0x1C
–
0x1F
Page 7 start address
0x20
–
0x7F
Reserved
0x80
(4)
.pof
version
0x81–0xFF
Reserved
The Quartus II Convert Programming File tool generates the information for the
.pof
version when you
convert the
.sof
files to
.pof
files.
The value for the
.pof
version generated by the Quartus II software version 7.1 onwards is
0x03
. However,
if you turn on the enhanced bitstream-compression feature, the value for the
.pof
version is
0x04.
Caution:
Do not overwrite any information in the option bits sector to prevent the PFL IP core from
malfunctioning, and always store the option bits in unused addresses in the flash memory
device.
(4)
.pof
version occupies only one byte in the option bits sector.
16
Storing Option Bits
UG-01082
2015.01.23
Altera Corporation
Parallel Flash Loader IP Core User Guide