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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.

FEATURES and FUNCTIONS

• Master clock: 512fs (fs = 44.1kHz; CD sampling rate)

• Clock master/slave switching for DSD inputs and PCM outputs

• Switchable between 3-line 6-channel external PCM data inputs and internal filter outputs

• Down-sampling filter characteristics
  Fixed coefficients: 4fs, 2fs and 1fs-rate output
• Output format: [MSB-first, left-justified, 32-bit] or [IIS, 32-bit]
• DSD gain switching function (+6dB)
• System clock output pins switchable between external system clock and internal system clock
• Supply voltage: 3.0 to 3.6V and 2.3 to 2.7V
• Operating temperature: - 40 to 85°C
• Package: 48-pin QFP

SHIPPING INFORMATION

• Sample price: $15

• Sample shipping date: April, 2003
• Mass production commencement: June, 2003
• Estimated volume production quantity: 50,000 units/month

For further information, please sales@npcamerica.com