SAA7108AE Datasheet, PDF(2/208 Page) NXP Semiconductors

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SAA7108AE Datasheet, PDF (2/208 Pages) NXP Semiconductors – HD-CODEC

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NXP Semiconductors

SAA7108AE; SAA7109AE

HD-CODEC

The encoder can operate fully independently at its own variable pixel clock, transporting

graphics input data, and at the line-locked, single crystal-stable video encoding clock.

As an option, it is possible to slave the video PAL/NTSC encoding to the video decoder

clock with the encoder FIFO acting as a buffer to decouple the line-locked decoder clock

from the crystal-stable encoder clock.

2. Features

2.1 Video decoder

I Six analog inputs, internal analog source selectors, e.g. 6 Ã CVBS or (2 Ã Y/C and

2 Ã CVBS) or (1 Ã Y/C and 4 Ã CVBS)

I Two analog preprocessing channels in differential CMOS style for best S/N

performance

I Fully programmable static gain or Automatic Gain Control (AGC) for the selected

CVBS or Y/C channel

I Switchable white peak control

I Two built-in analog anti-aliasing ï¬lters

I 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

I On-chip clock generator

I Line-locked system clock frequencies

I Digital PLL for horizontal sync processing and clock generation, horizontal and vertical

sync detection

I Requires only one crystal (either 24.576 MHz or 32.11 MHz) for all standards

I Automatic detection of 50 Hz and 60 Hz ï¬eld frequency, and automatic switching

between PAL and NTSC standards

I 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

I User programmable luminance peaking or aperture correction

I Cross-color reduction for NTSC by chrominance comb ï¬ltering

I PAL delay line for correcting PAL phase errors

I Brightness Contrast Saturation (BCS) and hue control on-chip

I Two multifunctional real-time output pins controlled by the I2C-bus

I Multistandard VBI data slicer decoding World Standard Teletext (WST),

North-American Broadcast Text System (NABTS), Closed Caption (CC), Wide Screen

Signalling (WSS), Video Programming System (VPS), Vertical Interval Time Code

(VITC) variants (EBU/SMPTE) etc.

I Standard ITU 656 Y-CB-CR 4 : 2 : 2 format (8-bit) on IPD output bus

I Enhanced ITU 656 output format on IPD output bus containing:

N Active video

N Raw CVBS data for INTERCAST applications (27 MHz data rate)

N Decoded VBI data

I Detection of copy protected input signals according to the Macrovision standard. Can

be used to prevent unauthorized recording of pay-TV or video tape signals

SAA7108AE_SAA7109AE_3

Product data sheet

Rev. 03 â 6 February 2007

2 of 208

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