sm5814as-service-manual维修手册

DPC-80CIRCUIT DESCRIPTIONU508:Digital filter (SM5814AS)Introduction:.16-bit 2-DACs/16-bit 1-DAC/12S/18-bit output modeThe SM5814AS is a digital filter LSI for digital audios,deve-selectionloped uniquely by NPC making use of molybdenum-gate CMOS.16-bit serial data input/output(2's complement,MSB first)technology.This LSI,a single-chip device,provides quadruple-.Built-in crystal oscillation circuitoversampling output for both channels and is capable of digi-Clock output (2-divided XTI and undivided output selectable)tal attenuation on 6-bit dataCompatible with any of system clocks 384fs,392fs,192fsThis LSI is a smaller-sized 24-pin SOP realized through employ-and 256fsment of serial 1/O format.(However,in the 12S output mode,392fs is unusable.)Features:ConfigurationStructureLinear-phase FIR filter n 2 stages.Molybdenum-gate CMOS(105-order 21-order)FunctionsReduced rounding error through employment of 18-bit filterQuadruple oversampling for both right and left channelscoefficient(Input rate fs-output rate 4fs).Highly accurate operation by 16x 18-bit multiplier and 25-·Digital attenuationbit accumulator.Built-in overflow limiter.64-step digital attenuationPin configurationxT●园23ACK22ALEATT421S0M0COSL 520S0M02CKO 6I9(N.C)Vss 718 VooSCSLT 817BCKOSCSL2 916WDCOLRCIIO15 DORDIN回14D0LBCK I 1213 DGL57