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ST92R195 Datasheet(PDF) 3 Page - STMicroelectronics |
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ST92R195 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 18 page 3/18 ST92R195B - GENERAL DESCRIPTION INTRODUCTION (Cont’d) 1.1.7 Teletext, VPS and WSS Data Slicers The three on-board data slicers using a single ex- ternal crystal are used to extract the Teletext, VPS and WSS information from the video signal. Hard- ware Hamming decoding is provided. 1.1.8 Voltage Synthesis Tuning Control 14-bit Voltage Synthesis using the PWM (Pulse Width Modulation)/BRM (Bit Rate Modulation) technique can be used to generate tuning voltages for TV set applications. The tuning voltage is out- put on one of two separate output pins. 1.1.9 PWM Output Control of TV settings is able to be made with up to eight 8-bit PWM outputs, with a frequency maxi- mum of 23,437Hz at 8-bit resolution (INTCLK = 12 MHz). Low resolutions with higher frequency oper- ation can be programmed. 1.1.10 Serial Peripheral Interface (SPI) The SPI bus is used to communicate with external devices via the SPI, or I C bus communication standards. The SPI uses a single line for data in- put and output. A second line is used for a syn- chronous clock signal. 1.1.11 Standard Timer (STIM) The ST92R195B has one Standard Timer that in- cludes a programmable 16-bit down counter and an associated 8-bit prescaler with Single and Con- tinuous counting modes. 1.1.12 Analog/Digital Converter (ADC) In addition there is a 4 channel Analog to Digital Converter with integral sample and hold, fast 5.75 µs conversion time and 6-bit guaranteed reso- lution. |
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