SAA7109A集成電路（IC）的編解碼器規(guī)格書(shū)PDF中文資料

GENERAL DESCRIPTION

The SAA7108AE; SAA7109AE is a new multi-standard video decoder and encoder chip, offering high quality video input and TV output processing as required by PC-99 specifications. It enables hardware manufacturers to implement versatile video functions on a significantly reduced printed-circuit board area at very competitive costs.

FEATURES

Video decoder

? Six analog inputs, internal analog source selectors, e.g.

6 × CVBS or (2 × Y/C and 2 × CVBS) or (1 × Y/C and

4 × CVBS)

? Two analog preprocessing channels in differential

CMOS style for best S/N performance

? Fully programmable static gain or Automatic Gain

Control (AGC) for the selected CVBS or Y/C channel

? Switchable white peak control

? Two built-in analog anti-aliasing filters

? Two 9-bit video CMOS Analog-to-Digital Converters

(ADCs), digitized CVBS or Y/C signals are available on

the Image Port Data (IPD) port under I2C-bus control

? On-chip clock generator

? Line-locked system clock frequencies

? Digital PLL for horizontal sync processing and clock

generation, horizontal and vertical sync detection

? Requires only one crystal (either 24.576 MHz or

32.11 MHz) for all standards

? Automatic detection of 50 and 60 Hz field frequency,

and automatic switching between PAL and NTSC

standards

? Luminance and chrominance signal processing for

PAL BGHI, PAL N, combination PAL N, PAL M,

NTSC M, NTSC-Japan, NTSC N, NTSC 4.43 and

SECAM

? User programmable luminance peaking or aperture

correction

? Cross-colour reduction for NTSC by chrominance comb

filtering

? PAL delay line for correcting PAL phase errors

? Brightness Contrast Saturation (BCS) and hue control

on-chip

? Two multi functional real-time output pins controlled by

the I2C-bus

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