Motorola DSP96002 User Manual

Page 732

MOTOROLA

DSP96002 USER’S MANUAL

C-9

Figure C-8. The Data ALU Block Diagram

Automatic Format Conversion Unit

d0.h

d0.m

d0.l

Register File

Control and

Arbitration Unit

Add/Subtract Unit

Multiply Unit

Special Function Unit

Operands

Results

X-Data Bus

Y-Data Bus

Infinite-precision

Rounded result (to

result

p=4 bits for example)

1.000 11100000....

1.001 (round up)

1.000 01100000....

1.000 (round down)

1.000 10000000....(absolute tie)

1.000 (round down)

1.001 10000000....(absolute tie)

1.010 (round up)

Table C-2. Example of the Round to Nearest (Even) Mode.