Datasheet

dsPIC33EPXXXGM3XX/6XX/7XX
DS70000689D-page 100  2013-2014 Microchip Technology Inc.
FIGURE 4-15: BIT-REVERSED ADDRESSING EXAMPLE
TABLE 4-67: BIT-REVERSED ADDRESSING SEQUENCE (16-ENTRY)
Normal Address Bit-Reversed Address
A3 A2 A1 A0 Decimal A3 A2 A1 A0 Decimal
0000 0 0000 0
0001 1 1000 8
0010 2 0100 4
0011 3 1100 12
0100 4 0010 2
0101 5 1010 10
0110 6 0110 6
0111 7 1110 14
1000 8 0001 1
1001 9 1001 9
1010 10 0101 5
1011 11 1101 13
1100 12 0011 3
1101 13 1011 11
1110 14 0111 7
1111 15 1111 15
b3 b2 b1 0
b2 b3
b4 0
Bit Locations Swapped, Left-to-Right,
Around Center of Binary Value
Bit-Reversed Address
XB = 0x0008 for a 16-Word Bit-Reversed Buffer
b7 b6 b5 b1
b7
b6 b5 b4b11 b10 b9 b8
b11
b10 b9 b8
b15 b14 b13
b12
b15 b14
b13 b12
Sequential Address
Pivot Point