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DSP56303 датащи(PDF) 254 Page - Freescale Semiconductor, Inc

номер детали DSP56303
подробное описание детали  DSP56303 USER?셎 MANUAL
PDF  292 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

DSP56303 датащи(HTML) 254 Page - Freescale Semiconductor, Inc

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DSP56303 User’s Manual, Rev. 2
B-10
Freescale Semiconductor
Programming Reference
B.3 Programming Sheets
Figure B-1. Status Register (SR)
Application:
Date:
Programmer:
Sheet 1 of 2
Central Processor
15 14 13 12 11 10
987
6543
210
UZ
V
C
19 18 17 16
23 22 21 20
L
LF
S1
SM
I1
I0
CE
SA
FV
S0
N
Scaling Mode
S(1:0)
Scaling Mode
00
01
10
11
No scaling
Scale down
Scale up
Reserved
*0
*0
Interrupt Mask
I(1:0)
Exceptions Masked
00
01
10
11
None
IPL 0
IPL 0, 1
IPL 0, 1, 2
Carry
Overflow
Zero
Negative
Unnormalized ( U = Acc(47) xnor Acc(46) )
Extension
Limit
FFT Scaling ( S = Acc(46) xor Acc(45) )
Sixteen-Bit Compatibilitity
Double Precision Multiply Mode
Loop Flag
DO-Forever Flag
Sixteen-Bit Arithmetic
Instruction Cache Enable
Arithmetic Saturation
Rounding Mode
Core Priority
CP(1:0)
Core Priority
00
01
10
11
0 (lowest)
1
2
3 (highest)
*= Reserved, Program as 0
Mode Register (MR)
Condition Code Register (CCR)
Extended Mode Register (EMR)
Status Register (SR)
Read/Write
Reset = $C00300
CP1
CP0
RM
DM
SC
S
E



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