DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 254

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Programming Reference
B.3 Programming Sheets
B-10
Application:
Sixteen-Bit Compatibilitity
Double Precision Multiply Mode
Loop Flag
DO-Forever Flag
Sixteen-Bit Arithmetic
Instruction Cache Enable
Arithmetic Saturation
Rounding Mode
Unnormalized ( U = Acc(47) xnor Acc(46) )
Extension
Limit
FFT Scaling ( S = Acc(46) xor Acc(45) )
Status Register (SR)
Reset = $C00300
Central Processor
S(1:0)
CP(1:0)
23 22 21 20
CP1 CP0
00
01
10
11
00
01
10
11
Extended Mode Register (EMR)
Scaling Mode
Core Priority
No scaling
Scale down
Scale up
Reserved
0 (lowest)
1
2
3 (highest)
Scaling Mode
Core Priority
RM
SM
19 18 17 16
CE
*
0
I(1:0)
00
01
10
11
SA
Read/Write
None
IPL 0
IPL 0, 1
IPL 0, 1, 2
Interrupt Mask
Figure B-1. Status Register (SR)
Exceptions Masked
FV
DSP56303 User’s Manual, Rev. 2
15 14 13 12 11 10 9
LF
DM
Mode Register (MR)
SC
*
0
Carry
Overflow
Zero
Negative
S1
S0
I1
I0
8
7
S
Condition Code Register (CCR)
Date:
Programmer:
6
*
L
= Reserved, Program as 0
5
E
4
U
3
N
Freescale Semiconductor
Sheet 1 of 2
Z
2
1
V
0
C