ICS1532 Datasheet, PDF (24/36 Pages) Integrated Device Technology – 110 MHZ TRIPLE 8-BIT ADC WITH CLOCK GENERATOR

ICS1532
110 MHZ TRIPLE 8-BIT ADC WITH CLOCK GENERATOR
10.2.2 Programming Flow for Calibrating
Figure 10-4. ICS1532 Flow for ADC Calibration
Begin ADC
Calibration
Initialize 1532/3 to
default values
Red Offset (Reg 38) = 80h
Green Offset (Reg 39) = 80h
Blue Offset (Reg 3A) = 80h
Presume that a line/screen with at least
one white and one black pixel
Increment Red
Offset
No
Reg 38
Min RED Output
Code > MIN?
MIN code is normally ~05h to allow for
out of calibration detection
Decrement Red
Offset
No
Reg 38
Min RED Output
Code < MIN?
Repeat for Green
and Blue Offset
Increment Red
No
Gain Reg34
Max RED Output
Code = FFh?
MDS 1532 G
Decrement Red
No
Gain Reg34
Max RED Output
Code < MAX?
Repeat for Green
and Blue Gain
Store Values in
Appropriate
Location
End ADC
Calibration
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MAX code is normally ~FAh to allow for
out of calibration detection
Now, any values over MIN or under
MAX indicate an out of calibration
condidion
Revision 060804