Knowledge Base Article
Title: Which SMPTE standards does the HOTLink I family support/not support? Questions: - How can I use the HOTLink 1 parts in a SMPTE-259M application? - Does Cypress have a part that supports the SMPTE 310M video standard? Response: Within the HOTLink I family of parts there is a SMPTE 259M video chipset. The CY7B9234/9334 (Transmitter/Receiver) and the CY7C9235/9335 (Srambler/Descrambler) provide a SMPTE 259M solution. These parts support the following Levels: 1. SMPTE 259M Level C (270 Mbps, 525/625component) 2. SMPTE 259M Level D (360 Mbps, 525/625component) In addition, a cable driver and equalizer will need to be used. Information on how to use the HOTLink 1 parts in a SMPTE-259M application can be found in two application notes (links are attached below). Adaptive Equalizers and Cable Drivers can be purchased from National Semiconductor. The parts we recommend are: CLC006 Serial Digital Cable Driver with Adjustable Outputs CLC007 Serial Digital Cable Driver with Dual Complementary Outputs CLC014 Adaptive Cable Equalizer for High-Speed Data Recovery Neither the HOTLink product family nor any other Cypress products support the SMPTE 310M standard for the following reasons: - SMPTE-310M uses bi-phase mark encoding, HOTLink uses the 8B/10B encoding scheme, - SMPTE-310M requires a synchronous serial interface to carry MPEG-2 transport bit streams at rates of up to 40Mb/s, HOTLinks lowest serial rate is 50Mb/s therefore is not compliant. For more detailed information please see the SMPTE-310M spec and compare it to HOTLink specifications. Useful Link: SMPTE HOTLink Transmitter/Receiver (CY7B9234 Datasheet) SMPTE 259M/DVB-ASI Scrambler/Controller (CY7C9235A Datasheet) SMPTE 259M/DVB-ASI Descrambler/Framer-Controller (CY7C9335A Data Sheet) Implement a SMPTE 259M Serial Digital Interface Using SMPTE HOTLink and CY7C9235/9335 http://www.cypress.com/?rID=12997 CY7C9267 SMPTE 259M Evaluation Boards User's Guide http://www.cypress.com/?rID=12996 Keywords: HOTLink 1, SMPTE, standards, support, CY7C9235, CY7C9335, CY7C9234, CY7C9334