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TMS320C80GF Scheda tecnica(PDF) 60 Page - Texas Instruments

Il numero della parte TMS320C80GF
Spiegazioni elettronici  DIGITAL SIGNAL PROCESSOR
PDF  171 Pages
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
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TMS320C80GF Scheda tecnica(HTML) 60 Page - Texas Instruments

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TMS320C80
DIGITAL SIGNAL PROCESSOR
SPRS023B – JULY 1994 – REVISED OCTOBER 1997
57
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251–1443
data unit operation code
For data unit opcode format A, a 4-bit operation code specifies one of 16 six-operand operations and an
associated data path, as shown in Table 16.
Table 16. Six Operand Format Operation Codes
oper FIELD BIT
60
59
58
57
OPERATION TYPE
0
u
0
s
MPY || ADD
0
u
1
f
MPYU || EALU
1
0
f
k
EALU || ROTATE
1
0
1
0
divi
1
1
u
s
MPY || SADD
Legend:
u
Unsigned
f
1s complement EALU function code
s
Subtract
k
Use mask or mf expander
operation class code
The base set ALU opcodes (formats B, C, D) use an operation class code to specify one of eight different
routings to the A, B, and C ports of the ALU, as shown in Table 17.
Table 17. Base Set ALU Class Summary
CLASS
DESTINATION
A PORT
B PORT
C PORT
000
dst
src2
src1
@mf
001
dst
dstc
src1
\ \
d0
src2
010
dst
dstc
src1
%src2
011
dst
dstc
src1
\ \
src2
%src2
100
dst
src2
src1
\ \
d0
%d0
101
dst
src2
src1
\ \
d0
@mf
110
dst
dstc
src1
src2
111
dst
src1
1
\ \
src2
src2
Legend:
\ \
Rotate left
@mf
Expand function
%
Mask generation
dstc
Companion D reg
dst
Destination Dreg or any reg if dstbank or Adstbnk is used with destination.
src2
Source D reg or immediate
srd1
Source D reg or any if As1bank is used or any lower reg if s1bnk is used



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