Analog Devices ADSP-21261 SHARC Hardware Reference Manual page 69

BIT
WEIGHT
BIT
WEIGHT
Figure 2-6. 64-Bit Signed Fixed-Point Product
BIT
WEIGHT
BIT
WEIGHT
Figure 2-7. 64-Bit Unsigned Fixed-Point Product
ADSP-2126x SHARC Processor Hardware Reference
SIGNED INTEGER, NO LEFT SHIFT
63 62 61
-2 63 2 62 2 61
SIGN
BIT
SIGNED FRACTIONAL, WITH LEFT SHIFT
63 62 61
-2 0 2 -1 2 -2
•
SIGN
BIT
BINARY
POINT
SIGNED INTEGER
63 62 61
2 63 2 62 2 61
SIGNED FRACTIONAL
63 62 61
2 -1 2 -2 2 -3
•
BINARY
POINT
Processing Elements
2 1
• • •
• • • 2 2 2 1
BINARY
2 1
• • • 2 -61 2 -62
2 1
• • • 2 2 2 1
BINARY
POINT
2 1
2 -62 2 -63 2 -64
• • •
0
2 0
•
POINT
0
2 -63
0
2 0
•
0
2-11