SM5846AP

SM5846AP NIPPON PRECISION CIRCUITS INC. Multi-function Digital Filter Audio ICs OVERVIEW The SM5846AP is a multi-function digital filter that incorporates 4/8 times oversampling digital audio signal reproduction, digital deemphasis, digital attenuation and soft mute functions. The I/O interface allows serial data transmission of 16/20/24/32bit input data and 20/24-bit output data. Filter Construction s FEATURES Functions s s s s s s s s s s s s s s s s s s 8-times oversampling (interpolation) Switchable 8/4 times oversampling output Two master clock frequencies (refer to Clock Functions) 384fs/512fs (normal-speed sampling) 192fs/256fs (high-speed sampling) Digital deemphasis Compatible with 32/44.1/48 kHz (normalspeed) and 64/88.2/96 kHz (high-speed) input sampling frequencies ON/OFF control Digital attenuator 128-step attenuation using linear 7-bit data setting Soft muting 1016/fs (normal-speed sampling) 2032/fs (high-speed sampling) Output data round-off operation (normal round-off or rectangular distribution dither round-off) Selectable LR clock polarity Microprocessor controllable Input data format 2s complement, MSB first, alternating L/R serial 16/20/24/32-bit data selectable Output data format 2s complement, MSB first, simultaneous L/R serial 20/24-bit data selectable. 24-bit internal data processing Jitter-free mode/synchronous mode selectable Crystal oscillator circuit built-in TTL-compatible outputs Molybdenum-gate CMOS s Interpolat...