PDK_header_format.txt

0x0000: 12 55 AA FF             ? marker (0xFFAA5512)
0x0004: 01 00 00 00             ? (1) 
0x0008: 14 00 00 00             ! version (0x14)
0x000C: 35 F3 B6 1E             ! special checksum = pdk_checksum(hdr,hdrlength) + pdk_checksum(code,codesize)

0x0010: 00 00 00 00             ! tuning frequency / 2 in Hertz, 0 => 8 MHz (16MHz)
0x0014: 03 00                   ? (3)
0x0016: 88 13                   ! tuning voltage in mV (0x1388 = 5000 mV)
0x0018: 3F                      ?
0x0019: 30 00 00                ? 
0x001C: 00 00 00 00             ? (0)

0x0020: 00 08 00 00             ! code size (0x800)
0x0024: E0 07                   ! usable code size (0x07E0) same value as reported from IDE (ROM Size)
0x0026: 00 00                   ! extra length1
0x0028: 00 00                   ! extra length2
0x002A: 00 00                   ?
0x002C: 00 00                   ! extra length3

...
0x003A: 24 06                   ? sysclk selection 0x0624 = IHRC/16, 0x0723 = IHRC/8, 0x060E = IHRC/2
0x003C: A1 2A                   ! OTP_ID (0x2AA1)
0x003E: 13                      ! OTP_WAY (0x13)
0x003F: 04                      ? BOOT_TYPE (4)

0x005A: 89 07                   ! remain free code (0x789) same value as reported from IDE

0x005E: 04 00                   ? something with LVD?
...

0x0080: 50 46 53 31 35 34 00    ! controller name string "PFS154"

0x0090: 05 13 06 64 60 61 55 .. ?

0x00A0: 30 2E 38 33 42 31 37 00 ! compiler/IDE version string "0.83B17"

...

0x00D0: 00 00                   ! extra length4

...

0x00E0: 12 .. .. 89             ! 16 byte key for code encryption
0x0100: <end / extra data>