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SAF7115 Datasheet(PDF) 1 Page - NXP Semiconductors |
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SAF7115 Datasheet(HTML) 1 Page - NXP Semiconductors |
1 / 35 page 1. General description The SAF7115 is a video capture device that, due to its improved comb filter performance and 10-bit video output capabilities, is suitable for various applications such as In-car video reception, In-car entertainment or In-car navigation. The SAF7115 is a combination of a two channel analog preprocessing circuit and a high performance scaler. The two channel analog preprocessing circuit includes source-selection, an anti-aliasing filter and Analog-to-Digital Converter (ADC) per channel, an automatic clamp and gain control, two Clock Generation Circuits (CGC1 and CGC2) and a digital multi standard decoder that contains two-dimensional chrominance/luminance separation utilizing an improved adaptive comb filter. The high performance scaler has variable horizontal and vertical up and down scaling and a brightness/contrast/saturation control circuit. 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 SAF7115 accepts CVBS or S-video (Y/C) from TV or VCR sources as analog inputs, including weak and distorted signals. The expansion port (X-port) for digital video (bi-directional half duplex, D1 compatible) can be used to either output unscaled video using 10-bit or 8-bit dithered resolution or to connect to other external digital video sources for reuse of the SAF7115 scaler features. The enhanced image port (I-port) of the SAF7115 supports 8-bit and 16-bit wide output data with auxiliary reference data for interfacing, e.g. with VGA controller applications. It is also possible to output video in square pixel formats accompanied by a square pixel clock of the appropriate frequency. The SAF7115 also incorporates provisions for capturing the serially coded data in the Vertical Blanking Interval (VBI-data) of several standards in parallel. Three basic options are available to transfer the VBI data to other devices: • Capturing raw video samples, after interpolation to the required output data rate, using the scaler and transferring the data to a device connected to the I-port • Slicing the VBI data using the built-in VBI data slicer (data recovery unit) and transferring the data to a device connected to the I-port • Slicing the VBI data using the built-in VBI data slicer and reading out the sliced data through the I2C-bus (for several slow VBI data type standards only) SAF7115 Multistandard video decoder with super-adaptive comb filter, scaler and VBI data read-back via I2C-bus Rev. 01 — 15 October 2008 Product data sheet |
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