Analog Devices ADSP-BF53x Blackfin Reference page 997

Signed Fractional (13.3)
Bit
15
Weight 12
- (2
Sign Bit
Unsigned Fractional (13.3)
Bit
15
Weight 12
2
Sign Bit
Figure D-2. Example of Fractional Format
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
14 13
11 10
) 2 2
. . .
14 13
11 10
2 2
. . .
Numeric Formats
2
3
4
1 -1
0
2
2
2
Radix Point
2
4 3
-1
1 0
2
2 2
Radix Point
1 0
-2 -3
2 2
1
0
-2 -3
2 2
D-3