Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
464
Figure 25-40. Parity Generation for 512/1024/2048/4096 16-bit Words
To calculate P8’ to PX’ and P8 to PX, apply the algorithm that follows.
Page size = 2
n
for i =0 to n
begin
for (j = 0 to page_size_word)
begin
if(j[i] ==1)
P[2
i+3
]= bit15(+)bit14(+)bit13(+)bit12(+)
bit11(+)bit10(+)bit9(+)bit8(+)
bit7(+)bit6(+)bit5(+)bit4(+)bit3(+)
bit2(+)bit1(+)bit0(+)P[2
n+3
]
else
P[2
i+3
]’=bit15(+)bit14(+)bit13(+)bit12(+)
bit11(+)bit10(+)bit9(+)bit8(+)
bit7(+)bit6(+)bit5(+)bit4(+)bit3(+)
bit2(+)bit1(+)bit0(+)P[2
i+3
]'
end
end
1st word
2nd word
3rd word
4th word
(Page size -3 )th word
(Page size -2 )th word
(Page size -1 )th word
Page size th word
(+)(+)