Transcript
BR1813/D Rev 1
D i g i ta l T V S o lu t i o n s
MCT5100 – M-DTV™ Module M-DTV™ ATSC to NTSC converter Receives ATSC signals and converts to NTSC display format. and vertical sync signals are provided. Vertical sync can also be programmed into the composite sync. Audio is provided as a down-mixed left and right stereo channels. Outputs are AC-coupled with a 1 VPP signal level. A TTL compatible S/PDIF Dolby Digital serial output stream is also available.
The MCT5100 Module is an ATSC demodulator/ decoder designed to provide Digital TV reception capabilities to an analog TV (NTSC) host chassis. The Module is a fully compliant ATSC receiver capable of receiving an 8-VSB modulated signal and providing all necessary signal processing, output formatting and interface controls required to display a Digital TV signal with a conventional analog TV chassis. The MCT5100 accepts an analog IF input signal containing an 8-VSB modulated ATSC transport stream. After filtering and amplification, the signal is digitized by an analog-to-digital converter and then demodulated. The demodulated transport stream is then demultiplexed into the MPEG video, Dolby Digital™ audio and other control/data streams provided for by the ATSC standard. The MPEG video and Dolby Digital audio are decoded via onboard decoders. Video signals are reformatted, as necessary, for the appropriate display device. Onboard video and audio digital-to-analog converters are provided for direct interface to the host TV chassis. The Module supports a variety of video output formats including RGB, or Composite and S-Video, or YUV/YPrPb. Audio outputs are down-mixed stereo and S/PDIF for Dolby Digital compliance.
An IF input signal and AGC output signal are connected through a 4 pin connector. The host chassis provides the tuner and channel selection function. A fast AGC loop is provided within the tuner interface, in addition to the AGC control provided in the VSB demodulator loop. Overall Module control and system management is supported with an onboard controller which interfaces to the host chassis via a serial port. The MCT5100 Module receives power and control signals through a 7 pin connector. The Module control is done via a 9600-Baud serial UART, with TV_TXD and TV_RXD signals configured as a DTE with no control signals, or alternatively an I2C interface. A master Module reset signal initializes operation and a power-on reset is provided. Module power may be obtained from the host chassis and can be between 8 Vdc to 20 Vdc with all required voltages and regulation generated onboard. Video outputs and synchronization are provided in a selectable output format on an 11 pin connector. The video may be provided in one of the following optional formats: RGB, Composite and S-Video, or YUV/YPrPb. Video signals are DC-coupled and require external decoupling. Outputs can be optionally manufactured with or without sync injected. Separate horizontal
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Features • Integrated DTV audio and video decoder • SDTV output format • Video outputs provide RGB, or Composite and S-Video, or YUV/YPrPb drive capability • Requires only Analog IF input signal • Stereo left and right audio outputs and S/PDIF serial digital channel for Dolby Digital™ • Communication via UART channel (9600 Baud LVCMOS logic levels TX and RX) or I2C interface • Single 8-20 volt dc supply voltage required • Fully enclosed metal can To learn more about Digital TV solutions using DigitalDNA technology from Motorola, visit our web site at http://www.mot-sps.com/ADC
