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Digital Arithmetic
book

Digital Arithmetic

by Miloš D. Ercegovac, Tomás Lang
September 2003
Intermediate to advanced content levelIntermediate to advanced
709 pages
26h 51m
English
Morgan Kaufmann
Content preview from Digital Arithmetic
278
c ~,:~ ~. ~:~ T ~! ~? .5 Division by Digit Recurrence
5~
Element
M-module
MUX
Recoder
Buffer
Multiplier-accumulator
Registers (3)
Convert
Cycle time
Total area
Delay
(NC)
1.4
6.0
1.8
13.8
4.0
(NC)
27
Note: NC denotes a delay not in the critical path.
Area
1800
70
6100
650
1360
9980
TABLE 5.7 Delay and area for radix-512 scheme.
Scheme r2 r4 r8 r16
Cycle-time factor
Number of cycles*
Speedup
Area factor
1.0
57
1.0
1.0
1.3
29
1.5
1.1
1.6
20
1.8
1.5
1.6
15
2.4
1.7
Correcnon: Two cycles for radix-2, one cycle for other cases.
r512
1.7
10
3.4
3.9
T A B L E 5.8 Comparison of schemes.
smaller than the ideal k because of the increase ...
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Publisher Resources

ISBN: 9781558607989