D950CORE View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

D950CORE

16-Bit Fixed Point Digital Signal Processor (DSP) Core

STMicroelectronics 

Multiplier Operations

DMULT

Double precision multiplication

MULT

Multiplication

SQR

Square

Figure 5.8 Double precision multiplication

D950-Core

*AXm + IXs = Lp

ApH

*AYn + IYr = Rq

ApH

Ai + = P

-=P

P = Lj MULT Rk

Rj

AjH

,

AkH

(RND)

PH

A+=P

-=P

P = Lj DMULT Rk

,

Rj

AjH +C31

AkH

PH

Ai + = P

-=P

,

P = Lj MULT Rk

(RND)

,

Lp = *AXm + IXs

,

Rq = *Ayn + IYr

A+=P

- =P

,

P = Lj DMULT Rk

+C31

Lp = *AXm + IXs

ApH

Ai + = P

,

-=P

P = Lj MULT Rk

(RND)

,

Rq = *AYn + IYr

ApH

A+=P

-=P

,

P = Lj DMULT Rk

+C31

VR02018G

Figure 5.9 Multiplication

A1 = P + R1

P = R1 MULT R1

P

,

L1 MULT R1

(RND)

,

-P

A1H MULT R1

- P + R1

L1 MULT A1H

L0 = *AX1 + IX3

L1

,

R0 = *AY1 + IY3

R1

A1 = P + R1

P = R1 MULT R1

*AY1 + IY3 = A1H

,

P

-P

,

L1 MULT R1 (RND) ,

A1H MULT R1

- P + R1

L1 MULT A1H

L0 = *AX1 + IX3

L1

A1 = P + R1

P = R1 MULT R1

*AX1 + IX3 = A1H ,

P

-P

,

L1 MULT R1 (RND) ,

A1H MULT R1

- P + R1

L1 MULT A1H

R0 = *AY1 + IY3

R1

VR02018H

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