CXA1854AR 데이터 시트보기 (PDF) - Sony Semiconductor

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CXA1854AR

Decoder/Driver/Timing Generator for Color LCD Panels

Sony Semiconductor 

CXA1854AR

Setting Conditions for Measuring Electrical Characteristics

When measuring the DC characteristics, the TG block must be horizontally synchronized by performing Setting 2.

Setting 2 must also be performed when measuring the AC characteristics. When measuring items with bands

greater than 2MHz such as the Y frequency response or sharpness characteristics, settings 1 and 3 must also

be performed and measurements made with the sample-and-hold circuit set to through status.

Setting 1. System reset

After turning on the power, set SW52 to ON and start up V52 from GND in order to activate the

timing controller system reset. (See Fig. 1-1.)

Setting 2. Horizontal AFC adjustment

Input SIG6 (VL = 0mV) to (A) and adjust VR12 so that WL and WH of the TP12 output waveform are

the same. (See Fig. 1-2.)

Setting 3. S/H off

Input the signals shown in Fig. 1-3 to Pins 16, 17, 18 and 19 in order to set the sample-and-hold

circuit to through status.

VDD (VCC1)

V52 (RESET)

TR > 10µs

TR

Fig. 1-1. System reset

SIG6

TP12

WS

WL

WL = WH

WH

Fig. 1-2. Horizontal AFC adjustment

Pin 19

Pin 18

Pin 17

Pin 16

Fig. 1-3. S/H off input pattern

– 10 –

VDD

GND

VDD

GND

VDD

GND

VDD

GND

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