Industry's First Multi-channel DSD to PCM Converter LSI for 6-channel SACD Playback

Nippon Precision Circuits Inc. (NPC) announces the development of SM5816AF*, the industry's first multi-channel DSD (Direct Stream Digital) to PCM (Pulse Code Modulation) converter LSI for 6-channel SACD (Super Audio CD) playback, and starts its sample shipping.

DSD is the SACD signal format of a 1-bit signal stream of 64-times CD sampling-rate. By using NPC's dedicated signal processing technology, the SM5816AFperforms a real-time conversion from a 6-channel DSD signal to a 6-channel PCM signal of 2-times or 8-times CD sampling-rate in one chip.

The conversion characteristics of the SM5816AF are decided by its internal decimation (down-sampling) filter coefficients. User can select the coefficients either from pre-installed coefficients or from optional coefficients that are written to the built-in SRAM by serial interface. By using the optional coefficients, the arbitrary filter characteristics are realizable.

Also, the SM5816AF has another optional functions like DSD direct-through function, DSD/PCM output independent muting and master/slave clock mode operation. 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 SM5816AF is suitable for multi-channel SACD playback system such as multi-channel SACD player, SACD- compatible AV amplifier and SACD- compatible DVD player.

*Built in connection and cooperation with Sony Corporation