TW2815-TA1-GR Renesas

NOT RECOMMENDED FOR NEW DESIGNS Contact our Technical Support Center at 1-888-INTERSIL or www.intersil.com/tsc DATASHEET FN7735 TW2815 Rev. 1.00 May 19, 2017 4-Channel Video Decoders and Audio Codecs for Security Applications The TW2815 includes four high quality NTSC/PAL video decoders that convert analog composite video signal to digital component YCbCr data for security application. The TW2815 contains four 10-bit ADC and proprietary clamp and gain controllers and uses 4H comb filter for separating luminance & chrominance to reduce cross noise artifacts. The TW2815 adopts the image enhancement techniques such as IF compensation filter, CTI, and programmable peaking. The TW2815 also includes audio CODEC which has four audio Analog-to-Digital converters and one Digital-to-Analog converter. A built-in audio controller can generate digital outputs for recording/mixing and accepts digital input for playback. Features Four Video Decoders Accepts all NTSC(M/N/4.43) / PAL(B/D/G/H/I/K/L/M/N/60) standards with auto detection Integrated four video analog anti-aliasing filters and 10 bit CMOS ADCs High performance adaptive 4H comb filters for all NTSC/PAL standards IF compensation filter for improvement of color demodulation Color Transient Improvement (CTI) Automatic white peak control Programmable hue, saturation, contrast, brightness and sharpness Proprietary fast video locking system for non-realtime application Supports the standard ITU-R BT.656 format or time multiplexed output with 54MHz Provides simultaneous four channel Full D1 and CIF time-multiplexed outputs with 54MHz Integrated four audio ADCs and one audio DAC Provides multi-channel audio mixed analog output Supports a standard I2S interface for record output and playback input 8/16 bit audio word length Sample audio with 8/16KHz Supports a two-wire serial host interface Ultra low power consumption (Typical 500mW) 100 TQFP package FN7735 Rev. 1.00 Page 1 of 82 May 19, 2017 TW2815 Table of Contents Block Diagram 4 Pin Diagram 5 Pin Description 6 Functional Description 8 Video Input Formats 8 Analog-to-Digital Converter 9 Sync Processing 10 Automatic Gain Control and Clamping 10 Horizontal Sync Processing 10 Vertical Sync Processing 10 Color Decoding 11 Decimation Filter 11 Y/C Separation 12 Luminance Processing 13 Chrominance Processing 14 Chrominance Demodulation 14 ACC (Automatic Color gain control) 15 Chrominance Gain, Offset and Hue Adjustment 15 CTI (Color Transient Improvement) 15 Video Cropping 16 Output Format 18 ITU-R BT.656 Format 18 Two Channel ITU-R BT.656 Time-multiplexed Format with 54MHz 19 Four Channel CIF Time-multiplexed Format with 54MHz 20 Extra Sync Output 22 Output Enabling Act 23 Audio Codec 24 Audio Detection 25 Multi-Chip Operation 25 Serial Audio Interface 27 Host Interface 30 Serial Interface 30 Interrupt Interface 31 FN7735 Rev. 1.00 Page 2 of 82 May 19, 2017