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參數資料
| 型號： | TSC21020F-20SCHXXX |
| 廠商： | ATMEL CORP |
| 元件分類： | 數字信號處理外設 |
| 英文描述： | 40-BIT, DSP-FLOATING POINT PROCESSOR, UUC |
| 封裝： | DIE |
| 文件頁數： | 5/37頁 |
| 文件大小： | 483K |
| 代理商： | TSC21020F-20SCHXXX |
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TSC21020F
Rev. E – Oct. 05, 1998
13
Table 4 : ALU Compute Operations
Fixed-Point
Floating-Point
Rn = Rx + Ry
Fn = Fx + Fy
Rn = Rx – Ry
Fn = Fx – Fy
Rn = Rx + Ry, Rm = Rx – Ry
Fn = Fx + Fy, Fm = Fx – Fy
Rn = Rx + Ry + CI
Fn = ABS (Fx + Fy)
Rn = Rx – Ry + CI – 1
Fn = ABS (Fx – Fy)
Rn = (Rx + Ry)/2
Fn = (Fx + Fy)/2
COMP(Rx, Ry)
COMP(Fx, Fy)
Rn = –Rx
Fn = –Fx
Rn = ABS Rx
Fn = ABS Fx
Rn = PASS Rx
Fn = PASS Fx
Rn = MIN(Rx, Ry)
Fn = MIN(Fx, Fy)
Rn = MAX(Rx, Ry)
Fn = MAX(Fx, Fy)
Rn = CLIP Rx BY Ry
Fn = CLIP Fx BY Fy
Rn = Rx + CI
Fn = RND Fx
Rn = Rx + CI – 1
Fn = SCALB Fx BY Ry
Rn = Rx + 1
Rn = MANT Fx
Rn = Rx – 1
Rn = LOGB Fx
Rn = Rx AND Ry
Rn = FIX Fx BY Ry
Rn = Rx OR Ry
Rn = FIX Fx
Rn = Rx XOR Ry
Fn = FLOAT Rx BY Ry
Rn = NOT Rx
Fn = FLOAT Rx
Fn = RECIPS Fx
Fn = RSQRTS Fx
Fn = Fx COPYSIGN Fy
Rn, Rx, Ry
R15-R0 ; register file location, fixed-point
Fn, Fx, Fy
F15-F0 ; register file location, floating point
Table 5 : Multiplier Compute Operations
Rn
MRF
MRB
= Rx * Ry ( S
U
S
U
F
I
FR
)
Fn
= Fx * Fy
Rn
MRF
MRB
+
MRF
MRB
MRF
MRB
+ Rx * Ry ( S
U
S
U
F
I
FR
)
Rn
MRF
MRB
+
MRF
MRB
MRF
MRB
– Rx * Ry ( S
U
S
U
F
I
FR
)
Rn
MRF
MRB
+
SAT MRF
SAT MRB
SAT MRF
SAT MRB
(SI)
(UI)
(SF)
(UF)
Rn
MRF
MRB
+
RND MRF
RND MRB
RND MRF
RND MRB
(SF)
(UF)
MRF
MRB
= 0
MRxF
MRxB
= Rn
Rn
= MRxF
MRxB
Rn, Rx, Ry R15-R0 ; register file location, fixed-point
Fn, Fx, Fy
F15-F0 ; register file location, floating-point
MRxF
MR2F, MR1F, MR0F ; multiplier result accumulators, foreground
MRxB
MR2B, MR1B, MR0B ; multiplier result accumulators, background
( x-input
y-input
data format,
rounding
)
S
Signed input
U
Unsigned input
I
Integer input(s)
F
Fractional input(s)
FR
Fractional inputs, Rounded output
(SF)
Default format for 1-input operations
(SSF)
Default format for 2-input operations
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