參數(shù)資料
型號: 951200201
廠商: ATMEL CORP
元件分類: 數(shù)字信號處理外設(shè)
英文描述: 40-BIT, DSP-FLOATING POINT PROCESSOR, QFP256
封裝: MQFP-256
文件頁數(shù): 18/50頁
文件大?。?/td> 702K
代理商: 951200201
25
TSC21020F
4153H–AERO–04/07
Multiplier Compute
Operations
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
Rn
MRF
MRB
= Rx *Ry( S
U
S
U
F
I
FR
)
Fn
= Fx * Fy
Rn
MRF
MRB
=
MR F
MR B
MR F
MR B
+ Rx * Ry S
U
S
U
F
I
FR
)
Rn
MR F
MRB
=
MR F
MR B
MR F
MR B
Rx * Ry (S
U
S
U
F
I
FR
)
Rn
MRF
MRB
=
SAT M RF
SAT M RB
SAT M RF
SAT M RB
(SI)
(UI)
(SF)
(UF )
Rn
MR F
MRB
RN D M RF
RND M RB
RN D M RF
RND M RB
(SF)
(UF )
MRF
MRB
= 0
MRxF
MRxB
= Rn
Rn
=
xF
MR
MRxB
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