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The SAA7115 is a video capture device for applications ranging from small screen products such as digital set-top bo xes and personal
video recordi ng applications to large screen devices li ke LCD projectors that benefit from its improved comb filter perfor mance and 10-bit
video output capabilities.
It combines a two channe l analog pre-processing circuit and a high perf ormance scaler. The pre- processing circuit includes source selection, an anti-aliasing filter and an analog to digital
converter, an automatic clamp and gain cont rol, two clock generation circuits and a digital multi-standard decoder containing two-dimensional chrominance/luminance separation using an
improved adapti ve comb filter. The high perfo rmance scaler features variable horizontal and vertical up and down scali ng and a Brightness Contrast Saturation (BCS) cont rol circuit. Based
on the principle of line-locked cloc k decoding, the decoder is able to decode PAL, SECAM and NTSC signals into ITU-601 compati bl e co lour component values.
It accepts CVBS or S-Video (Y-C) analog inputs from TV or VCR sources, including weak and distorted signals. The expansion port (X-port) for digital video (bi-directional half duplex, D1
compatible) can be used either to outpu t unscaled video using 10-bit or 8-bit dithered resolution or to connect to other external digital vi deo sources for reuse of the SAA7115's scaler
features. An enhanced image port (I-p ort) supports 8(16)-bit wide output da ta with auxiliary reference data for int e rfacing to VGA contro llers, set-top bo x applications, etc. It is also possible
to output video in Square Pixel formats accompanied by a square pixel clock of the appropriate frequency.
The SAA7115 can capture the serially coded data in the vertical blanking interval (VBI-data) of several broadcast standards. I t also incorporates also a f rame locked audio clock generation.
This ensures that ther e is always the same number of audi o samples associated with a frame or set of fields. This prevents the loss of synch ronisation betwee n video and audio, during
capture or playback. Furthermore the second analog onboard PLL optionally can be used to enhance this audio clock to a low jitter frame locked audio clock. All the functions of the
SAA7115 can be controlled via I2C-bus.
Video acquisit ion
Six analog inputs , internal analog sourc e selectors (e.g.: 6 x CVBS or (2 x YC and 2 CVBS) or (1 x YC and 4xCVBS))
Two built in analog anti-alias filters
Two improved 9-bit CMOS anal og-t o-digital converters
Fully programmable static gain or automatic gain control (AGC) for the selected CVBS or Y/C channel
Automatic Clamp Control (ACC) for CVBS, Y and C
Switchable white peak control
Requires only one cr ystal (32.11 MHz or 24.576 MHz) for all standards
Independent gain and offset - adjustment f or raw data path
Comb filter video decoder
Digital PLL for Synchronization and Clock Generation from all Standards and Non Standard Video Sources e.g. consumer gr ade VTR
Automatic detect ion of 50/60Hz field frequency, and automatic recognition of all common broadcast standards
Enhanced Horizontal and vertical Sync Detection
Luminance and chrominance signal processing
Improved 2/4-line comb filter for two-dimensional chrominance/luminance-separation operating with adaptive comb filter parameters.
Independent Bri ghtness Contrast Saturat ion (BCS)
User programmable sharpness control
Detection of copy protected input signal s and level according to Macr ovision standard
Automatic TV/VCR detection
10 bit wide video out put at comb filter video decoder
Video Scaler
Horizontal and vertical down-scaling and up-scaling to rando mly sized windows
Horizonta l and vertical scaling range: variable zoom to 1/64 (icon)
Vertical scaling with linear phase interpolation and accumulating filter for anti-aliasing (6-bit phase accuracy)
Conversion to square pixel format
Generation of a video output stream with impro ved synchronisation gr id at the I-Port
Two independent programming sets for scaler part
Fieldwise switching between decoder and expansion port (X-port) input
Brightness, contrast and saturation controls for scaled outputs
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Datasheet
SAA7115
No datasheet available
PAL/NTSC/SECAM video decoder
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Type number Orderable part
number Ordering code
(12NC) Product
status Package Packing Marking Chemical conte nt Leadfree
conversion date
SAA7115HL/V1 SAA7115HL/V1,5 18 9352 706 66518 Volume
production SOT407-1
(LQFP100) Reel Dry Pack, SMD,
13" Standard
Marking SAA7115HL/V1 week 12, 2004
SAA7115HL/V1 SAA7115HL/V1,5 57 9352 706 66557 Volume
production SOT407-1
(LQFP100) Tray Dry Pa ck,
Bakeable, Multiple Standard
Marking SAA7115HL/V1 week 12, 2004
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date Buy
online Samples
SAA7115HL/V1 9352 706 66518 SAA7115HL/V1,518 NA MOUSER
ELECTRONICS 902 4/23/2009 Buy
online Order
samples
ARROW Buy
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Related applications
Nexperia DVR system solution
Support Documents
75015904; Digital Video Decoders for general applications (2007- 03-03)
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SAA7115HL/V1 9352 706 66557 SAA7115HL/V1,557 NA ELECTRONICS 1,652 4/23/2009 online not available
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