OVERVIEW
The SM5849BF is a digital audio signal, asynchronous sample rate converter LSI. It supports 16/20/24-bit word length input data, 16/20/24-bit word length output data, 2kHz to 100kHz input sample rate range, and 4kHz to 200kHz output sample rate range. It also features a built-in digital deemphasis filter and digital attenuator.

FEATURES
Filter Characteristics and Converter Efficiency
■ 24-bit internal data word length
■ Deemphasis filter characteristics (IIR filter)
   • ±0.03dB gain deviation from ideal filter characteristics
■ Anti-aliasing LPF characteristics
   • Output/input sample rate conversion ratio auto matic filter select (6 FIR filters)
      - Up converter LPF 1.0 to 2.2 times
      - Down converter LPF I 0.92 times: 48.0 to 44.1kHz
      - Down converter LPF II 0.73 times: 44.1 to 32.0kHz
      - Down converter LPF III 0.67 times: 48.0 to 32.0kHz
      - Down converter LPF IV 0.5 times: 48.0 to 24.0kHz
      - Down converter LPF V 0.45 times: 48.0 to 22.1kHz
   • ±0.00005dB passband ripple
   • > 110dB stopband attenuation
■ Converter noise levels
   • ≤ −110dB internal calculation (quantization) noise
   • −98dB (16-bit output), −122dB (20-bit output), and −146dB (24-bit output) word rounding noise
■ Output S/N ratio (theoretical values) Interfaces
■ Input data format
   • 2s-complement, L/R alternating, serial
   • IIS/non-IIS format
■ Output data format
   • 2s-complement, MSB first, L/R alternating, serial
   • Continuous bit clock

APPLICATIONS
■ Digital audio equipment-interface sample rate conversion (AV amplifiers, CD-R, DAT, MD and 8mm VTRs)
■ Commercial recording/editing equipment sample rate conversion