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MSP34X1G データシート(PDF) 6 Page - Micronas |
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MSP34X1G データシート(HTML) 6 Page - Micronas |
6 / 104 page MSP 34x1G PRELIMINARY DATA SHEET 6 Micronas Multistandard Sound Processor Family with Virtual Dolby Surround Release Note: Revision bars indicate significant changes to the previous edition.The hardware and software description in this document is valid for the MSP 34x1G version B8 and following versions. 1. Introduction The MSP 34x1G family of single-chip Multistandard Sound Processors covers the sound processing of all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound processing, starting with analog sound IF signal-in, down to pro- cessed analog AF-out, is performed on a single chip. Figure 1–1 shows a simplified functional block diagram of the MSP 34x1G. The MSP 34x1G has all functions of the MSP 34x0G with the addition of a virtual surround sound feature. Surround sound can be reproduced to a certain extent with two loudspeakers. The MSP 34x1G includes the Micronas virtualizer algorithm “3D-PANORAMA” which has been approved by the Dolby1) Laboratories for compliance with the "Virtual Dolby Surround" technol- ogy. In addition, the MSP 34x1G includes the “PAN- ORAMA” algorithm. These TV sound processing ICs include versions for processing the multichannel television sound (MTS) signal conforming to the standard recommended by the Broadcast Television Systems Committee (BTSC). The DBX noise reduction, or alternatively, Micronas Noise Reduction (MNR) is performed alignment free. Other processed standards are the Japanese FM-FM multiplex standard (EIA-J) and the FM Stereo Radio standard. Current ICs have to perform adjustment procedures in order to achieve good stereo separation for BTSC and EIA-J. The MSP 34x1G has optimum stereo perfor- mance without any adjustments. All MSP 34xxG versions are pin compatible to the MSP 34xxD. Only minor modifications are necessary to adapt a MSP 34xxD controlling software to the MSP 34xxG. The MSP 34x1G further simplifies con- trolling software. Standard selection requires a single I2C transmission only. The MSP 34x1G has built-in automatic functions: The IC is able to detect the actual sound standard automat- ically (Automatic Standard Detection). Furthermore, pilot levels and identification signals can be evaluated internally with subsequent switching between mono/ stereo/bilingual; no I2C interaction is necessary (Auto- matic Sound Selection). The ICs are produced in submicron CMOS technology. The MSP 34x1G is available in the following packages: PLCC68 (not intended for new designs), PSDIP64, PSDIP52, PQFP80, and PLQFP64. Fig. 1–1: Simplified functional block diagram of the MSP 34x1G Loud- SCART1 SCART2 SCART1 SCART2 SCART4 SCART3 MONO De- modulator Headphone Headphone I2S Sound Processing speaker Sound Processing DAC DAC ADC Loud- DAC DAC ADC Subwoofer SCART DSP Input Select Pre- processing SCART Output Select Prescale Prescale I2S1 I2S2 Sound IF1 Sound IF2 speaker |
同様の部品番号 - MSP34X1G |
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同様の説明 - MSP34X1G |
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