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 Development of "SM5819AF",
Multi-channel DSD to PCM Converter LSI
for 6-channel Super Audio CD PlaybackNippon Precision Circuits Inc. (abbreviated NPC; Head office: 4-3 Fukuzumi 2-Chome, President: Mr. Tabuchi) announces the development of SM5819AF, multi-channel DSD (Direct Stream Digital) to PCM (Pulse Code Modulation) converter LSI for 6-channel Super Audio CD playback.*1
DSD is the Super Audio CD signal format of a 1-bit signal stream of 64-times CD sampling rate. By using NPC's dedicated signal processing technology, the SM5819AF performs a real time conversion from a 6-channel DSD signal to a 6-channel PCM signal of 4-times, 2-times or 1-times CD sampling rate in one chip.
The conversion characteristics of the SM5819AF are decided by its internal down-sampling filter coefficients. Also, the SM5819AF has three filter characteristics according to the PCM output (4fs, 2fs and 1fs). Furthermore, it has 6-channel external PCM input. By using these functions, user can realize a wide range of system configurations, making it easy to constitute a multi-channel DSD and PCM reproduction system.
The SM5819AF is suitable for multi-channel Super Audio CD playback system such as multi-channel Super Audio CD player, Super Audio CD-compatible AV amplifier and Super Audio CD-compatible DVD player.
*1: This SM5819AF has been developed by the supporting of Sony Corporation.
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 FEATURES and FUNCTIONS |
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Master clock: 512fs (fs = 44.1kHz; CD sampling rate) |
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Clock master/slave switching for DSD inputs and PCM outputs |
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Switchable between 3-line 6-channel external PCM data inputs and internal filter outputs |
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Down-sampling filter characteristics |
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Fixed coefficients: 4fs, 2fs and 1fs-rate output |
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Output format: [MSB-first, left-justified, 32-bit] or [IIS, 32-bit] |
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DSD gain switching function (+6dB) |
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System clock output pins switchable between external system clock and internal system clock |
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Supply voltage: 3.0 to 3.6V and 2.3 to 2.7V |
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Operating temperature: - 40 to 85°C |
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Package: 48-pin QFP |
SHIPPING INFORMATION |
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Sample price: 1,500 yen |
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Sample shipping date: April, 2003 |
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Mass production commencement: June, 2003 |
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Estimated volume production quantity: 50,000 units/month |
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For more information,
Sales Group
TEL +81-3-3642-6663 FAX +81-3-3642-6698 sales@npc.co.jp
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