CPU
Decoders/Encoders
PHY
 
HOME > Product > Decoders/Encoders > SAA7118E/V1/M5,557
 
 

SAA7118E/V1/M5,557

Product Code : -
( Unit : U.S dollar )
1~99
100~499
500~999
1000~
price per box
quantity per box
5.36
RoHS : -
Stock : 142
Application : Display
Call TEL. +82-2-3397-3613
 
 
 
*Multistandard video decoder with adaptive comb filter and component video input


*General description

The SAA7118 is a multistandard comb filter video decoder supporting various applications to capture analog video; it includes digitizing of component formats Y-PB-PR and RGB, and is providing high quality, optionally scaled video.

The SAA7118 is a combination of a four-channel analog preprocessing circuit including source selection, anti-aliasing filter and Analog-to-Digital Converter (ADC) with succeeding decimation filters from 27 MHz to 13.5 MHz data rate. Each preprocessing channel comes with an automatic clamp and gain control. The SAA7118 combines a Clock Generation Circuit (CGC), a digital multistandard decoder containing two-dimensional chrominance/luminance separation by an adaptive comb filter and a high performance scaler, including variable horizontal and vertical up and downscaling and a brightness, contrast and saturation control circuit.

It is a highly integrated circuit for desktop video and similar applications. The decoder is based on the principle of line-locked clock decoding and is able to decode the color of PAL, SECAM and NTSC signals into ITU 601 compatible color component values. The SAA7118 accepts CVBS or S-video (Y/C) as analog inputs from TV or VCR sources, including weak and distorted signals as well as baseband component signals Y-PB-PR or RGB. An expansion port (X port) for digital video (bidirectional half duplex, D1 compatible) is also supported to connect to MPEG or a video phone codec. At the so called image port (I port) the SAA7118 supports 8-bit or 16-bit wide output data with auxiliary reference data for interfacing to VGA controllers.

The target application for the SAA7118 is to capture and scale video images, to be provided as a digital video stream through the image port of a VGA controller, for capture to system memory, or just to provide digital baseband video to any picture improvement processing.

The SAA7118 also provides a means for capturing the serially coded data in the Vertical Blanking Interval (VBI) data. Two principal functions are available:

  1. To capture raw video samples, after interpolation to the required output data rate, via the scaler
  2. A versatile data slicer (data recovery) unit

The SAA7118 also incorporates field-locked audio clock generation. This function ensures that there is always the same number of audio samples associated with a field, or a set of fields. This prevents the loss of synchronization between video and audio during capture or playback.

All of the ADCs may be used to digitize a Vestigial Side Band (VSB) signal for subsequent decoding; a dedicated output port and a selectable VSB clock input is provided.

The circuit is I2C-bus controlled (full write/read capability for all programming registers, bit rate up to 400 kbit/s).

 
*Features

Video acquisition/clock
  • Up to sixteen analog CVBS, split as desired (all of the CVBS inputs optionally can be used to convert e.g. VSB signals)
  • Up to eight analog Y + C inputs, split as desired
  • Up to four analog component inputs, with embedded or separate sync, split as desired
  • Four on-chip anti-aliasing filters in front of the ADCs
  • Automatic Clamp Control (ACC) for CVBS, Yand C (or VSB) and component signals
  • Switchable white peak control
  • Four 9-bit low noise CMOS ADCs running at twice the oversampling rate (27 MHz)
  • Fully programmable static gain or Automatic Gain Control (AGC), matching to the particular signal properties
  • On-chip line-locked clock generation in accordance with "ITU 601"
  • Requires only one crystal (32.11 MHz or 24.576 MHz) for all standards
  • Horizontal and vertical sync detection

Video decoder

  • Digital Phase-Locked Loop (PLL) for synchronization and clock generation from all standards and non-standard video sources e.g. consumer grade VTR
  • Automatic detection of any supported color standard
  • Luminance and chrominance signal processing for PAL B, G, D, H, I and N, combination PAL N, PAL M, NTSC M, NTSC-Japan, NTSC 4.43 and SECAM
  • Adaptive 2/4-line comb filter for two dimensional chrominance/luminance separation, also with VTR signals
    • Increased luminance and chrominance bandwidth for all PAL and NTSC standards
    • Reduced cross color and cross luminance artefacts
  • PAL delay line for correcting PAL phase errors
  • Brightness Contrast Saturation (BCS) adjustment, separately for composite and baseband signals
  • User programmable sharpness control
  • Detection of copy-protected signals according to the Macrovision standard, indicating level of protection
  • Independent gain and offset adjustment for raw data path

Component video processing

  • RGB component inputs
  • Y-PB-PR component inputs
  • Fast blanking between CVBS and synchronous component inputs
  • Digital RGB to Y-CB-CR matrix

Video scaler

  • Horizontal and vertical downscaling and upscaling to randomly sized windows
  • Horizontal and vertical scaling range: variable zoom to 1/64 (icon) (it should be noted that the H and V zoom are restricted by the transfer data rates)
  • Anti-alias and accumulating filter for horizontal scaling
  • Vertical scaling with linear phase interpolation and accumulating filter for anti-aliasing (6-bit phase accuracy)
  • Horizontal phase correct up and downscaling for improved signal quality of scaled data, especially for compression and video phone applications, with 6-bit phase accuracy (1.2 ns step width)
  • Two independent programming sets for scaler part, to define two 'ranges' per field or sequences over frames
  • Fieldwise switching between decoder part and expansion port (X port) input
  • Brightness, contrast and saturation controls for scaled outputs

VBI data decoder and slicer

  • Versatile VBI data decoder, slicer, clock regeneration and byte synchronization e.g. for World Standard Teletext (WST), North American Broadcast Text System (NABTS), closed caption, Wide Screen Signalling (WSS), etc.

Audio clock generation

  • Generation of a field-locked audio master clock to support a constant number of audio clocks per video field
  • Generation of an audio serial and left/right (channel) clock signal

Digital I/O interfaces

  • Real-time signal port (R port), inclusive continuous line-locked reference clock and real-time status information supporting RTC level 3.1 (refer to document "RTC Functional Specification" for details)
  • Bidirectional expansion port (X port) with half duplex functionality (D1), 8-bit Y-CB-CR:
    • Output from decoder part, real-time and unscaled
    • Input to scaler part, e.g. video from MPEG decoder (extension to 16-bit possible)
  • Video image port (I port) configurable for 8-bit data (extension to 16-bit possible) in master mode (own clock), or slave mode (external clock), with auxiliary timing and handshake signals
  • Discontinuous data streams supported
  • 32-word x 4-byte FIFO register for video output data
  • 28-word x 4-byte FIFO register for decoded VBI data output
  • Scaled 4 : 2 : 2, 4 : 1 : 1, 4 : 2 : 0, 4 : 1 : 0 Y-CB-CR output
  • Scaled 8-bit luminance only and raw CVBS data output
  • Sliced, decoded VBI data output

Miscellaneous

  • Power-on control
  • 5 V tolerant digital inputs and I/O ports
  • Software controlled power saving standby modes supported
  • Programming via serial I2C-bus, full read back ability by an external controller, bit rate up to 400 kbit/s
  • Boundary scan test circuit complies with the "IEEE Std. 1149.b1 - 1994".
 
 
 
Delivery

1. The initial delivery day shall be the day following the day on which the product is forwarded to the delivery service.
1) Regular home-delivery (excluding order date and holidays): Seoul/Gyeonggi 3~5days, other regions 3~8days
2) Postal service: Seoul/Gyeonggi 3~5days
2. During public holidays and weekends, there will be no delivery, and any other days during which delivery is impracticable due to a force majeure event may cause delay in the delivery.
3. The buyers both within and outside of Korea shall be responsible for any delivery fee that may arise. But the products bought over 300,000 won will be delivered free of charge.

Cancellation and Refund

1. The buyer may cancel the purchase order before the product is shipped, and if the product is in the process of being delivered, transaction shall be handled pursuant to the Article 15 of products return.
2. If the product is on standby for delivery after the payment, the buyer may cancel the order at any time except for the particular circumstances.
3. If credit card has been used for the payment, the payment shall immediately be refunded as soon as the cancellation process is completed. If cash has been used for the payment, the payment shall be refunded in 5 business days via direct account transfer or others.

Return and Exchange

1. The buyer may demand a return of the product within three days after the receipt of the delivery.
2. The cost for the return delivery shall be borne by the liable party.
3. The payment of refund upon return of the product shall be completed within 5 days after the Company has received the product from the buyer.
4. The Company shall refund, return and exchange in accordance with the buyer’s demand in the following cases. Such transaction shall be processed within 10 days after the delivery.
1) Delivered product does not match with the purchase order.
2) Delivered product is lost or damaged due to the Company’s error.
3) Delivery is considerably delayed than what has been scheduled.
4) Otherwise, legitimate reasons are submitted to the Company for the demand by the buyer.

Delivery/Returned goods/Exchange Address

Guro branch : 3127, Ma-Dong, Central Distribution Complex, 1258, Guro-Dong, Guro-Gu, Seoul, Korea, 152-721
TEL : +82-2-2681-5517(REP)
FAX : +82-2-2681-5518
Support: +82-2-3397-3613
E-mail : shop@semidj.com

Overseas Delivery Service

1. The Company provides the service in accordance with the overseas delivery procedure of the products whose trade contract is already signed through the overseas delivery network that has business connection with the Company. Overseas delivery is divided into as follows:
1) A domestic delivery phase: until the buyer’s product is delivered to a logistics center of a third party in business cooperation with the Company
2) An overseas delivery phase: until the product is delivered to the recipient through the overseas delivery network
2. For overseas delivery, the buyer’s order may be cancelled depending on the status of the delivery request. Return requested due to change of mind during delivery is limited to the phase of domestic delivery. Once the product has completed the domestic delivery phase and entered the overseas delivery phase, a return is not permitted unless the Company approves return or exchange due to an original defect in the delivered product.
3. A buyer requesting the Company’s approval on return or exchange must approve the original product defect or other grounds for return or exchange by submitting to the Company objective evidence. The costs and expenses for the delivery in connection with the return or exchange shall be paid by the Company once objective evidence has been approved.
4. The buyer who has received an approval to return or exchange of the product from the Company shall contact the DJmall customer center before the return of the product, including documents to verify costs and expenses for the delivery.
5. If the estimated cost of the delivery paid at purchase is greater than the actual delivery cost, the difference will be refunded to the buyer.
6. If the estimated cost of the delivery paid at purchase is less than the actual delivery cost, the buyer must make an additional payment to complete the delivery. If the difference is not paid within 3 months despite of continuous notice, the product may become the Company’s own property.
7. In the event of using overseas delivery service, the recipient is liable for all customs, taxes, duties and other cost imposes by the country to which the delivery is made.
'BUYER IS RESPONSIBLE FOR THE DELIVERY FEE'