D-8
DSP96002 USER’S MANUAL
MOTOROLA
register file consisting of 10 96-bit registers for storage of floating-point numbers is available for
that purpose. An automatic conversion unit converts the floating point storage format in memory
to the internal DP format when moving operands and/or results from/to memory.
2.
Multiply unit: A full IEEE floating-point multiply unit, delivering either a SP or SEP result in one
instruction cycle.
3.
Adder/Subtracter unit: A full IEEE floating-point adder/subtracter unit, which can deliver the
sum as well as the difference of two operands in the same instruction cycle, to either SP or SEP.
4.
Special function unit: A special function unit provides various logic functions, as well as support
for divide and square root in terms of an initial seed for a fast convergent divide and square root
algorithm.
5.
Controller and arbitrator: A controller/arbitrator supplies all of the control signals necessary for
the operation of the data ALU.
The data ALU uses the SEP format for all of its operations: the results are automatically rounded to either
SP or SEP. All of the rounding modes specified by the IEEE standard are supported. These rounding modes
are:
Figure D-5. DP Format in the Data ALU
95 94 93 92
75 74
64
63 62
32
31
11 10
0
S U V
O
E
0
Fraction (MSBs)
Fraction (LSBs)
i
Dn.h
Dn.m
Dn.l
S : sign
U : single precision unnormalized tag
V : double precision unnormalized
i : explicit integer
Tiny SP Numbers between
±
2
Emin
-1.0
×
2
-126
0
+1.0
×
2
-126
Figure D-6. Tiny Numbers
Figure D-7. SEP Format in the Data ALU
95 94 93 92
75 74
64
63 62
32 31
11 10
0
S U V
O
E
0
Fraction
0
i
Dn.h
Dn.m
Dn.l
Summary of Contents for DSP96002
Page 3: ...1 2 DSP96002 USER S MANUAL MOTOROLA ...
Page 38: ...MOTOROLA DSP96002 USER S MANUAL 3 15 Figure 3 4 Modulo Arithmetic Unit Block Diagram ...
Page 39: ...3 16 DSP96002 USER S MANUAL MOTOROLA ...
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Page 76: ...MOTOROLA DSP96002 USER S MANUAL 5 23 Figure 5 8 Address Modifier Summary ...
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Page 101: ...MOTOROLA DSP96002 USER S MANUAL 7 15 Figure 7 9 HI Block Diagram One Port ...
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Page 181: ...MOTOROLA DSP96002 USER S MANUAL 10 15 Figure 10 8 Program Address Bus FIFO ...
Page 337: ...MOTOROLA DSP96002 USER S MANUAL A 149 ...
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Page 460: ...A 272 DSP96002 USER S MANUAL MOTOROLA SIOP Not affected ...
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Page 519: ...MOTOROLA DSP96002 USER S MANUAL A 331 ...
Page 718: ...MOTOROLA DSP96002 USER S MANUAL B 199 ...
Page 871: ... MOTOROLA INC 1994 MOTOROLA TECHNICAL DATA SEMICONDUCTOR M Addendum ...
Page 888: ...MOTOROLA INDEX 1 INDEX ...
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