SM5849F

SM5849AF NIPPON PRECISION CIRCUITS INC. Asynchronous Sample Rate Converter OVERVIEW The SM5849AF 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 Functions s s s s Filter Characteristics and Converter Efficiency s s s s s s s s s s s s s Left/right-channel processing (stereo) 2 to 100kHz input sample rate range (fsi) 4 to 200kHz output sample rate range (fso) 0.45 to 2.2-times variable sample rate conversion ratio (fso/fsi) Asynchronous input and output timing (clock inputs) System clock inputs (input and output clocks independent) 256fsi or 384fsi input system clock select 256fso or 384fso output system clock select Deemphasis filter IIR-type filter 44.1, 48 or 32kHz Digital attenuator 11-bit data, 1025 levels Smooth attenuation change +12dB gain shift function Direct mute function Through mode operation Direct connection from input to output Output data clocks (LRCO, BCKO) Slave mode: external input Master mode: output system clock generated internally Dither round-off processing Dither round-off ON/OFF selectable 3.3V single supply 80-pin QFP Silicon-gate CMOS process s s s 24-bit internal data word length Deemphasis filter characteristics (IIR filter) ±0.03dB gain d...