Multiplication without processor with DFB

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kep_284046
Level 2
Level 2
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This is only a test ! 

   

I am waiting for your suggest.

   
   

Target: The solution to the situation where the timing is inadequate.

   

Operation : 16 Bit square operation

   

Max Value: 0xFFFF

   

Min Value: 0x0020

   

Note 0: The first 4 bytes of neglect

   

Note 1: If you want to reduce the min value, you must reduce the maximum value.

   
   


I tried this; X = Y + Z => X^2 = X . Y + X . Z

   

X = 0xaabb

   

Y = 0xaa00

   

Z = 0x00bb

   

=> X^2 = 0xaabb . 0xaa00 + 0xaabb . 0x00bb

   
   

In DFB; I'm doing move for top 24 bits.

   

X << 7 (shift) => 0x55 5D80

   

Y << 7 (shift) => 0x55 0000

   

Z << 15 (shift) => 0x5D 8000

   

X.Y = 0x38 B017 (Hold A)

   

X.Z = 0x3E 5B4C (Hold B)

   

Outside the DFB;

   

Y1 = 0x38 B017 (Hold A)

   

Z1 = 0x3E 5B4C (Hold B)

   

With DMA;

   

Y1 = 0x38B0 1700 (Memory Map)

   

Z1 = 0x3E 5B4C X^2 = (Y1 + Z1) * 4

   

X^2 = 0x38EE 724C * 4 = 0x29 0952 F3E8
 

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kep_284046
Level 2
Level 2
First like given

I forgot to tell. 

   

AC input signals must be converted DC

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