CH7012A

Features:

·TV output supporting up to 1024x768 graphics resolutions
·Programmable digital interface supports RGB and YCrCb
·TrueScaleTM rendering engine supports underscan in all TV output resolutions
·Enhanced text sharpness and adaptive flicker removal with up to 7 lines of filtering
·Support for all NTSC and PAL formats
·Provides CVBS, S-Video and SCART (RGB) outputs
·TV connection detect
·Programmable power management
·10-bit video DAC outputs
·Fully programmable through serial port
·Complete Windows and DOS driver support
·Low voltage interface support to graphics device
·Offered in a 64-pin LQFP package



Pinout




Specifications

Symbol	Description	Min	Typ	Max	Units
	DVDD, AVDD, TVDD, VDD relative to GND	-0.5		5.0	V
	Input voltage of all digital pins1	GND - 0.5		VDD + 0.5	V
TSC	Analog output short circuit duration		Indefinite		Sec
TAMB	Ambient operating temperature	- 55		85
TSTOR	Storage temperature	- 65		150
TJ	Junction temperature			150
TVPS	Vapor phase soldering (one minute)			220

Description

The CH7012 is a display controller device which accepts a digital graphics input signal, and encodes and transmits data to a TV output (analog composite, svideo or RGB). The device accepts data over one 12-bit wide variable voltage data port which supports five different data formats including RGB and YCrCb.

The TV-Out processor CH7012A will perform non-interlace to interlace conversion with scaling and flicker filters, and encode the data into any of the NTSC or PAL video standards. The scaling and flicker filter CH7012A is adaptive and programmable to enable superior text display. Eight graphics resolutions are supported up to 1024 by 768 with full vertical and horizontal underscan capability in all modes. A high accuracy low jitter phase locked loop is integrated to create outstanding video quality. Support is provided for RGB bypass mode which enables driving a VGA CRT with the input data.