cxa1853q Sony Electronics, cxa1853q Datasheet - Page 32

• Manufacturer Part Number: cxa1853q
• Description: Rgb Driver For Lcd
• Manufacturer: Sony Electronics

RGB inversion amplifier
The polarity of the RGB output is inverted according to the FRP pulse. The relationship between input and
output is as shown in the figure below.
SID output
The CXA1853Q outputs a side black signal for 4:3/16:9 aspect conversion. The black level is adjusted by the
SID CTR pin. In addition, the PRG level can be set in part of the side black signal by inputting the PRG pulse.
The PRG level is adjusted by the PRG CTR pin. The relationship between each input and output is as shown
in the figure below.
Signal center control
The RGB and SID output center voltages are adjusted by the SIG CENT CTR (Pin 37).
When SIG CENT CTR is preset, the output pin center voltage goes to V
Output clamp
The average value of each RGB and SID output signal is detected with external RC circuits and input to the
RGB CLP and SID CLP pins. Then the center voltage offsets among R, G, B and SID outputs are reduced by
feedback which equalizes these detected values and the signal center voltage set by the SIG CENT CTR pin.
RGB OUT
SID OUT
SIDFRP
RGB IN
PRG
FRP
PRG level
Signal center
Signal center
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CXA1853Q