Philips SAA7115 User Guide
SAA7115
NTSC/PAL/SECAM
9-bit Video Decoder
COMB FILTER • Universal VBI Slicer • Macrovision
With adaptive 4-line comb filter, universal VBI slicer,
pixel accurate scaler and enhanced Macrovision detection
®
®
Philips
Semiconductors
Philips Semiconductorswww.semiconductors.philips.com
The SAA7115 provides the front-end digitization and
processing of analog video inputs for next-generation
set-top boxes, digital televisions, video projectors,
personal video, and DVD recorders. A single-chip 9-bit
video decoder with 2x-oversampling, the SAA7115
provides video capture for a range of applications
including advanced large-screen devices such as LCD
projectors and HDTVs. Decoding NTSC, PAL and
SECAM signals using fully automatic standard
detection, the SAA7115 also includes a pixel accurate
H/V scaler, a frame accurate audio clock and an
optional square pixel output rate.
Designed with service providers in mind the SAA7115
complies with Macrovision’s Copy Protection Detect
Specification Revision 1.00 and is also well suited for
video surveillance systems requiring ultra-fast frame
switching. In addition, it is fully pin-to-pin compatible
with Philips’ highly successful SAA7114 Video Decoder,
making it the ideal solution for a multitude of
applications.
Product highlights
The SAA7115 from Philips Semiconductors is a feature-packed
video-capture device, offering these major benefits:
• Dual 9-bit low noise analog-to-digital converters with
2x-oversampling
• Worldwide NTSC/PAL/SECAM decoding with full
auto-detection
• 6 analog inputs allow flexible combinations of CVBS and S-Video
• Best-in-class dynamically adaptive worldwide 4-line comb filter
• High performance, pixel-accurate, horizontal and vertical scaler
• Automatic VCR detection and optimization
• Optional square pixel output rate
• Universal VBI data slicer including WST 525/625 Teletext,VPS,
US/European Close Captioning (CC),WSS 525/625 (CGMS),
US NABTS,VITC 525/625, Gemstar
®
1x/2x and Moji Japanese
Teletext
• Flexible VBI read back via industry standard I
2
C-bus
• Comprehensive three-level hardware Macrovision
®
detection
certification
• Ultra fast field-lock for advanced video surveillance and
security applications
• Patented real-time control (RTC) for video editing and
time-shift applications
• LQFP100 package, pin-to-pin compatible with Philips highly
successful SAA7114.
Targeting next generation digital video applications
For superior performance in today’s PC and consumer video
products, as well as tomorrow’s hot new digital video
applications, check out the SAA7115 for the following:
• PC video capture and editing
• Personal Video Recorders (time shifting)
• Cable, terrestrial, and satellite set-top boxes
• Video projectors
• Flat Panel Displays
• DVD recorders
• Digital televisions
• Line doublers and scan converters
• Video surveillance and security
• Video editing and post production
• Video conferencing
• Digital VCRs.
Multistandard video decoding, scaling,
and data processing on one IC
When a video application demands high quality decoding – flexible
scaling and robust data processing – look to the SAA7115 video
decoder. Highly integrated and supporting worldwide video
standards, the SAA7115 is designed to provide a digital video
stream for any video-input application.This includes input to the
image port of a VGA controller, for capture to system memory, or
to provide digital baseband video to any MPEG encoder, LCD
scaler or picture-improvement processor.
The SAA7115 features a two-channel analog preprocessing circuit,
dual Clock Generation Circuits (CGCs), a digital multistandard
decoder and a high-performance pixel-accurate scaler. It accurately
decodes all variations of PAL, SECAM, and NTSC signals into
standard ITU-601 compatible component colour values. It accepts
CVBS or S-Video (Y+C) from TV or VCR sources as analog inputs
– including weak and distorted signals – as well as digital video via
an integrated bi-directional expansion port (X Port).
At its image port (I Port), the SAA7115 supports scaled 8- or
16-bit output data with auxiliary reference data for interfacing to
VGA controllers. For capturing serially coded data in the vertical
blanking interval (VBI data), the SAA7115 can use its scaler for
interpolating raw video samples to the required data output.
Programmable on a line-by-line basis to one of 15 data types,
the versatile data slicer can also output through the image port
or via the industry standard I
2
C-bus.
The SAA7115 incorporates frame-locked audio clock generation,
to ensure the same number of audio samples is always associated
with a frame, or a set of fields.This prevents loss of synchronization
between video and audio during capture or playback. Furthermore
the second, integrated CGC can be optionally used to enhance this
audio clock for an ultra low jitter frame-locked audio clock.
Controlled via the I
2
C-bus, the SAA7115 offers full write-read
capability for all programming registers, at up to 400 kbits/s.
RTC
OUTPUT
RTSx
6 ANALOG
INPUTS ALLOW
FLEXIBLE
COMBINATIONS
OF CVBS AND
S-VIDEO
CONTROL
POWER-ON
CONTROL
AUX PULSE
CONTROL
XTAL AND
VIDEO CLOCKS
CHROMA
PROCESSING
LUMINANCE
PROCESSING
INPUT
DATA
CONTROL
ANALOG
INPUT
PROCESSING
Cb
Cr
C
DYNAMIC
COMBING
ENGINE
SYNCHRONIZATION
SAA7115 V
CVBS
Y
ADC1
ADC2
S
S
S
Y
Loading...