CXA3017R 데이터 시트보기 (PDF) - Sony Semiconductor

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CXA3017R

Decoder/Driver/Timing Generator for Color LCD Panels

Sony Semiconductor 

CXA3017R

Setting Conditions for Measuring Electrical Characteristics

Use the Electrical Characteristics Measurement Circuit on page 30 while measuring electrical characteristics.

Also, the TG (timing generator) block must be initialized by performing Settings 1 and 2 below.

Setting 1. System reset

After turning on the power, set SW58 to ON and start up V58 from GND in order to activate the TG

block system reset. (See Fig. 1-1.)

The serial bus is set to the default values.

Setting 2. Horizontal AFC adjustment

Input SIG5 (VL = 0mV) to (A) and adjust serial bus register VCO so that the TP9 phase comparison

output waveform (near VSYNC) is horizontal.

SW48 = OFF, SW58 = ON, V58 = 3.0V

(See Fig. 1-2.)

Note) When measuring a band of 2MHz or more such as Y signal frequency response or sharpness characteristics

among the items being measured, the measurement must be made with the sample-and-hold circuit set to

through (sample and hold not performed) by the serial bus.

VDD

V58 (PWRST)

TR

TR > 10µs

Fig. 1-1. System reset

SIG5

TP9

VSYNC

VSYNC

TP9

approximately 1/2VDD

Adjust to a horizontal waveform.

Fig. 1-2. Horizontal AFC adjustment

– 10 –

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