SAA7129H Datasheet

Interface - Encoders, Decoders, Converters


The SAA7128H; SAA7129H encodes digital CB-Y-CRvideo data to an NTSC, PAL or SECAM CVBS or S-videosignal. Simultaneously, RGB or bypassed but interpolatedCB-Y-CR signals are available via three additional DACs.The circuit at a 54 MHz multiplexed digital D1 input portaccepts two ITU-R BT.656 compatible CB-Y-CR datastreams with 720 active pixels per line in4:2:2 multiplexed formats, for example MPEG decodeddata with overlay and MPEG decoded data withoutoverlay, whereas one data stream is latched at the rising,the other one at the falling clock edge.It includes a sync/clock generator and on-chip DACs. SAA7129H Features • Monolithic CMOS 3.3 V device, 5 V I2C-bus optional• Digital PAL/NTSC/SECAM encoder• System pixel frequency 13.5 MHz• 54 MHz double-speed multiplexed D1 interface capableof splitting data into two separate channels (encodedand baseband)• Three Digital-to-Analog Converters (DACs) for CVBS(CSYNC), VBS (CVBS) and C (CVBS) two timesoversampled with 10-bit resolution (signals in bracketsoptional)• Three DACs for RED (CR), GREEN (Y) and BLUE (CB)two times oversampled with 9-bit resolution (signals inbrackets optional)• Alternatively, an advanced composite sync is availableon the CVBS output for RGB display centring• Real-time control of subcarrier• Cross-colour reduction filter• Closed captioning encoding and World StandardTeletext (WST) and North-American Broadcast TextSystem (NABTS) teletext encoding including sequencerand filter• Copy Generation Management System (CGMS)encoding (CGMS described by standard CPR-1204 ofEIAJ); 20 bits in lines 20/283 (NTSC) can be loaded viaI2C-bus• Fast I2C-bus control port (400 kHz)• Line 23 Wide Screen Signalling (WSS) encoding• Video Programming System (VPS) data encoding inline 16 (50/625 lines counting)• Encoder can be master or slave• Programmable horizontal and vertical inputsynchronization phase• Programmable horizontal sync output phase• Internal Colour Bar Generator (CBG)• Macrovision Pay-per-View copy protection systemrev. 7.01 and rev. 6.1 as option; this applies toSAA7128H only. The device is protected by USA patentnumbers 4631603, 4577216 and 4819098 and otherintellectual property rights. Use of the macrovisionanti-copy process in the device is licensed fornon-commercial home use only. Reverse engineering ordisassembly is prohibited. Please contact your nearestPhilips Semiconductors sales office for more information• Controlled rise/fall times of output syncs and blanking• On-chip crystal oscillator (3rd-harmonic or fundamentalcrystal)• Down mode (low output voltage) or power-save mode ofDACs• QFP44 package


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Manufacturer information


ON Semiconductor - ON Semiconductor (Nasdaq: ON) is driving energy efficient innovations, empowering customers to reduce global energy use. The company offers a comprehensive portfolio of energy efficient power and signal management, logic, discrete and custom solutions to help design engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power supply applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.

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