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  1/5 rev. a structure silicon monolith ic integrated circuit product name usb host + mp3 encoder + wav/aac/wma/mp3 decoder lsi type BU94702KV applications audio products, etc. functions BU94702KV is mp3 encoder + wav/aac/wma/mp3 decoder ic which contains program download function from external serial flash rom and contains usb host, sd card i/f, cd-rom i/f, audio dac, system controller, regulator for internal core power supply. usb2.0 full speed host i/f function contained. sd card i/f function contained. i 2 c format i/f function contained. mp3 encode function contained. (available for m peg1, layer3, support up to 2x input speed) mp3 decode function contained. (available for mpeg1, 2 and 2.5, layer 1, 2 and 3) wma decode function contained. (available for wma9 standard and not available for drm) aac decode function contained. (available for mpeg4 aac-lc and not available for drm) wav format file playing function contained. sample rate converter contained. system controller contained. fat analysis function contained. cd-rom i/f function and cd-rom decode function contained. browsing function of other file names, folder names on music playing contained. id3tag and wmatag and aactag analysis. fast forward playing and fast backward playing function contained. external processor can control. resume function contained. audio dac contained. sound ef fect function contained. digital audio out(i 2 s, eiaj, s/pdif) function contained. digital audio input(i 2 s, eiaj) function contained. program download function from exte rnal serial flash rom contained. regulator for internal core power supply contained. vqfp80pin(0.5mm pitch) absolute maximum ratings (ta = 25 ?c) parameter symbol limits unit comment supply voltage(analog, i/o) vdd1max -0.3 4.5 dvddio, vdd_pll, davdd, avddc input voltage vin -0.3 vdd1 + 0.3 storage temperature range tstg -55 125 operating temperature range topr -40 85 power dissipation *1 pd 900 *1 in the case of use at ta=25 or more, 9mw should be reduced per 1 . radiation resistance design is not arranged. operating conditions (ta = 25 ) parameter symbol limits unit comment supply voltage(analog, i/o) vdd1 3.0 3.6 dvddio,vdd_pll, davdd, avddc
2/5 rev. a electrical characteristics unless specified, ta=25 vdd1=3.3v, dvss=avssc=vss_pll= davss=0v, xin_pll=16.9344mhz parameter symbol limits unit condition min. typ. max. circuit current (vdd1 usb1) idd1usb1 - 60 90 ma *1 when usb memory is played. circuit current (vdd1 sd1) idd1sd1 - 35 60 ma *1 when sd card is played. h-level input voltage vih vdd1*0.7 vdd1 v *3 l-level input voltage vil dvss vdd1*0.3 v *3 h-level output voltage1 voh1 vdd1-0.4 vdd1 v ioh=-1.6ma, *4 l-level output voltage1 vol1 0 0.4 v iol=1.6ma. *4 l-level output voltage2 vol2 0 0.4 v iol=3.6ma, *5 h-level output voltage3 voh3 vdd1-0.4 vdd1 v ioh=-0.6ma, *6 l-level output voltage3 vol3 0 0.4 v iol=0.6ma, *6 h-level output voltage4 voh4 vdd1-1.0 vdd1 v ioh=-0.6ma, *7 l-level output voltage4 vol4 0 1.0 v iol=0.6ma, *7 h-level input voltage vihusb vdd1*0.6 vdd1 v *8 l-level input voltage vilusb avssc vdd1*0.3 v *8 output impedance(h) zoh 22.0 45.0 60.0 *8 output impedance(l) zol 22.0 45.0 60.0 *8 h-level output voltage vohusb vdd1-0.5 vdd1 v *8 l-level output voltage volusb 0 0.3 v *8 rise/fall time tr/tf 11 ns *8, output capacity 50pf voltage of crossing point vcrs vdd1/2 v *8, output capacity 50pf range of differential input vdiff 0.8 2.5 v *8 differential input sensitivity vsens 0.2 v *8 pull-down resistance rpd 14.25 20.0 24.8 k *8


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