參數(shù)資料
型號(hào): SAA7135
廠商: NXP Semiconductors N.V.
英文描述: Single-chip, analog TV video/stereo DECODER
中文描述: 單,模擬電視的視頻芯片/立體聲解碼器
文件頁(yè)數(shù): 2/6頁(yè)
文件大?。?/td> 116K
代理商: SAA7135
S e m i c o n d u c t o r s
SAA7135
Single-chip, analog TV video/stereo decoder for worldwide PCI applications—with Dolby Pro Logic
Decode
The SAA7135 decodes composite video into ITU-601 compatible
component color values. Its high-quality multi-standard adaptive
four-line comb filter performs best-in-class luma/chroma separa-
tion of CVBS signals from all sources, significantly reducing dot
crawl and enhancing image resolution and detail.The decoder
integrates separate brightness-contrast-saturation circuitry for
CVBS, S-Video, and rawVBI samples, and hue control for CVBS
and S-Video signals.
The SAA7135 supports fully automatic, three-level hardware
Macrovision detection with active-status interrupt. By ensuring
the content's original analog copy protection is still intact,
Macrovision prevents unauthorized recording of copyrighted
material transmitted through analog video outputs in applications
such as time-shift or archive recording or large screen display.
Analog TV video processing
Capture
Analog video is sampled through five video inputs, supporting any
combination of CVBS and S-Video signals.The SAA7135 auto-
matically detects 50- and 60-Hz field frequencies and all analog
standards (PAL, NTSC, and SECAM) used in TV broadcasts.
Video is digitized by sophisticated, low-noise nine-bit ADCs with
built-in white and color peak control,clamping, and programmable
gain control. 27-MHz oversampling, twice the ITU-601 standard,
ensures an exceptional signal-to-noise ratio for maximum picture
clarity. Additional video capture features include:
> single crystal support for all video standards
> ultra-fast frame lock for fast input-switching in surveillance
applications and VCR fast search, shuttle, and freeze frame
> forced-field toggle for use with non-interlaced inputs to avoid
VCR ‘blue screen’
five analog
video inputs:
CVBS,S-Video
SOUND DECODER
(BTSC+dbx,SAP,EIAJ,
A2/Dual-FM,NICAM,
FM,AM)
I S
2
digital video
P
SAA7135
digital audio
FORMAT
CLIPPING &
FORMAT
MATRIX &
GAMMA
VIDEO
SCALER
CLOCK SYNC
DECODER
COMB FILTER
AUDIO FEATURE
PROCESSING
(Dolby Pro Logic,
Virtual Dolby Surround,
Philips Incredible Sound,
bass,treble,volume,
balance,AVL)
AUDIOMUX
DAC(2)
analog stereo to
loopback cable
or headphones
TS (
MPEG datastream
digitalTV)
TS/MPEG CAPTURE
(serial,parallel)
ANALOG SIF/
AUDIO INTERFACE
ANALOG
AUDIO
INTERFACE
ANALOG
VIDEO
INTERFACE
analog audio pass-through
32 kHz,44.1 kHz,48 kHz
VIDEO PORT
FORMAT
two analog audio
stereo pairs
TV sound (SIF)
A
A
A
control data,
config data
from EEPROM
FORMAT
PROGRAMMABLE I/O
IRQ SELECTION/MAP
GPIO
interrupt
PROGRAMMING
REGISTERS
I2C
F
D
PCI bus
digital video,
digital audio,
control data
I C INTERFACE
SAA7135 Conceptual Block Diagram
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PDF描述
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