ICS1532 datasheet(24/36 Pages) IDT

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110 MHZ TRIPLE 8-BIT ADC WITH CLOCK GENERATOR

ICS1532

MDS 1532 G

Revision 060804

www.idt.com

10.2.2

Programming Flow for Calibrating

Figure 10-4.

ICS1532 Flow for ADC Calibration

Initialize 1532/3 to

default values

Begin ADC

Calibration

Red Offset (Reg 38) = 80h

Green O ffset (Reg 39) = 80h

Blue O ffset (Reg 3A) = 80h

Presum e that a line/screen with at least

one white and one black pixel

Min RED Output

Code > MIN?

Increm ent Red

Offset

Reg 38

Min RED Output

Code < MIN?

Decrem ent Red

Offset

Reg 38

Repeat for Green

and Blue O ffset

Max RED Output

Code = FFh?

Increm ent Red

G ain Reg34

Max RED Output

Code < MAX?

Decrem ent Red

G ain Reg34

End ADC

Calibration

Now, any values over MIN or under

MAX indicate an out of calibration

condidion

MAX code is norm ally ~FAh to allow for

out of calibration detection

MIN code is norm ally ~05h to allow for

out of calibration detection

Repeat for Green

and Blue G ain

Store Values in

Appropriate

Location

ICS1532 Datasheet(PDF) 24 Page - Integrated Device Technology

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