TW6872 Overview
Triple-Rate (SD/HD/3G) SDI Transmitter with VC-2 Encoder and Audio Decoder TW6872 The TW6872 is a triple-rate (SD/HD/3G) SDI transmitter. It receives parallel BT.656/BT.1120/ASI video data from a CMOS sensor/ISP chip. It also receives analog audio, or serial digital audio.
TW6872 Key Features
- Triple-rate (SD/HD/3G) SDI transmitter for Standard Definition (SD) and High Definition (HD), and 3G 10-bit ponent video
- Encoding SDI standard of ITU-R BT.656/SMPTE 259M Level C, ITU-R BT.1120/SMPTE ST 292, SMPTE 424M 10-bit parallel ponent
- BT.656/BT.1120 interface for CMOS sensor/ISP chip
- Asynchronous Serial Interface (ASI) for IEC 13818-1 pliant transport streams
- Integrated 75Ω cable driver with pre/de-emphasis
- Integrated VC-2 encoder allows transmission of HD video over SD transmission lengths
- Analog audio and I2S serial audio input interfaces over ancillary field
- Digital audio with PCM encoding for embedding audio samples into the audio ancillary field of SDI stream
- Single 27MHz clock/crystal input
- Optional clock output for use as the ISP chip’s clock input to enhance overall jitter