SDA9410-B13 datasheet(33/179 Pages) MICRONAS

Part #	SDA9410-B13

Description	Display Processor and Scan Rate Converter using Embedded DRAM Technology Units

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Manufacturer	MICRONAS [Micronas]

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SDA9410

Preliminary Data Sheet

Input signal processing

33

Micronas

5.4.2.1

Vertical compression and peaking

The overall reduction of the vertical compression block can be calculated by the formula:

The user must specify the vertical input picture size (defined by I²C Bus parameter

ALPFIPM/ALPFIPS) and the vertical output picture size (defined by I²C Bus parameter

APPLM/APPLS) as well as the I²C Bus parameter INTVM/INTVS (I²C Bus parameter,

09h,0Ah,2Bh,2Ch) and DEZVM/DEZVS (I²C Bus parameter, 0Ah,2Ch), which can be

calculated with the algorithm listed below (C-code).

intV, dezV: variables

for( intV=2*ALPFM/S, dezV=1; intV<=2*ALPFIPM/S; intV*=2, dezV*=2 )

;

intV = ((512*2*ALPFIPM/S*2+intV/2)/intV);

dezV/=2;

if(dezV>16)

{

intV=intV*dezV/16;

dezV=16;

}

INTVM/S=intV-512;

512

INTVM

+

ΕΦ

-----------------------------------------

1

DEZVM

----------------------

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