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 distortion rate thd 0.005 % 1khz, 0db, sine, *9 dynamic range dr 90 db 1khz, -60db, sine, *9 s/n ratio s/n 95 db *9 max output level vsmax 0.67 vrms 1khz, 0db, sine, *9 *1 3.3v system i/o, analog power supply(vdd1), 1khz, 0db, sine-wave playing *3 1, 3, 4-9, 14-23, 29, 31-32, 34-35, 61-63, 71-76 pin *4 9, 11-12, 14-15, 18-20, 30, 36, 58-60, 61-67, 69-70 pin *5 2, 3, 17 pin *6 24-26, 28, 29 pin *7 49 pin *8 41, 42 pin *9 53, 55 pin
3/5 rev. a description of terminals no. name i/o description of terminals 1 resetx i system reset terminal 2 test15 o [test15]pull-up at 2.2k ohm to vdd1 system power supply terminal(test pin) 3 test16 o [test16]pull-up at 2.2k ohm to vdd1 system power supply terminal(test pin) 4 sel_slave i slave mode selection h stand alone mode, l slave mode 5 sel_mp3/inreqi i [sel_mp3]mpeg audio layer selection h only mp3, l mp1, mp2 and mp3 can be playback , [inreqi]input data valid 6 sel_dout/lrcki i [sel_dout]digital audio out selection h disable l enable , [lrcki]digital audio channel clock input terminal 7 sel_vol/bcki i [sel_vol] volume operation selection h volume+- effective, l vol+-inavalidity , [bcki]digital audio bit clock input terminal 8 sel_aplay/sdatai i [sel_aplay] at device(usb,sd) connection, auto play mode selection(h:it stop, l:it playback), [sdatai]digital audio data input terminal 9 sel_utpkt/bfullo i/o [sel_utpkt] usb test packet output selection h normal l test packet ,[bfullo]input buffer full flag output terminal 10 dvss gnd terminal 11 irpto o to host interruption output terminal 12 search o search flag terminal 13 dvddio io power supply(vdd1) terminal 14 key_row1/mchng i/o [key_row1]key matrix terminal, [mchng]music change flag terminal 15 key_row2/busy i/o [key_row2]key matrix terminal, [busy]busy flag terminal 16 key_row3/scl i [key_row3]key matrix terminal, [scl]i 2 c slave clock i/f input terminal 17 key_row4/sda i/o [key_row4]key matrix terminal, [sda]i 2 c slave data i/f terminal 18 key_col1/a0 o/i [key_col1]key matrix terminal, [a0]i 2 c slave address selection 19 key_col2/a1 o/i [key_col2]key matrix terminal, [a1]i 2 c slave address selection 20 key_col3/sel_i2c o/i [key_col3]key matrix terminal, [sel_i2c]pull-up to vdd1 system power supply terminal 21 sd_wp i sd card write protect terminal 22 sd_con i sd card connect terminal 23 sd_do i sd card data in terminal 24 sd_clk o sd card clock terminal 25 sd_di o sd card data out terminal 26 sd_cs o sd card chip select terminal 27 dvss gnd terminal 28 fl_cs o serial flash rom chip select terminal 29 test/clk12mo i/o [test] pull-up to vdd1 system power supply terminal(test pin), [clk12mo]12mhz clock output terminal 30 test5 o [test5]open (test pin) 31 test6 i [test6]pull-up to vdd1 system power supply terminal(test pin) 32 test7 i [test7]pull-up to vdd1 system power supply terminal(test pin) 33 dvddio io power supply(vdd1) terminal 34 test8 i [test8]pull-up to vdd1 system power supply terminal(test pin) 35 test9 i [test9]pull-up to vdd1 system power supply terminal(test pin) 36 test10 o open (test pin, ipl error flag output) 37 dvss gnd terminal 38 dvdd_m2 core power supply(vdd2) monitor terminal. connect to dvdd_m1 pin. 39 atest1 o usb test terminal(test pin), open 40 avddc usb power supply(vdd1)terminal 41 usb_dm i/o usb d i/o terminal 42 usb_dp i/o usb d+ i/oterminal 43 avssc usb gnd terminal 44 rexti o usb bias resistor(12k ) connecting terminal 45 vorefi o usb test terminal(test pin), open 46 vss_pll pll gnd terminal 47 test_pll1 i pll test terminal(test pin), open 48 xin_pll i x'tal(16.9344mhz) connecting input terminal 49 xout_pll o x'tal(16.9344mhz) connecting output terminal 50 test_pll2 o pll test terminal(test pin), pull-up to vdd1 system power supply terminal 51 vdd_pll pll power supply(vdd1) terminal 52 davss audio dac gnd terminal 53 rdaco o audio dac rch line output terminal 54 vcdaco o audio dac reference voltage output teminal 55 ldaco o audio dac lch line output terminal 56 davdd audio dac power supply(vdd1) terminal 57 dvss gnd terminal 58 amute o audio mute output terminal h mute off, l mute on 59 test11 o open (test pin)
4/5 rev. a 60 test12/mclk o [test12] open (test pin), [mclk] digital audio master clock (16.9344mhz) output terminal 61 led_error/ ss_cs o/i [led]lighting output terminal at error, [s s_cs] slave sio chip select in terminal 62 led_play/ss_di o/i [led]lighting output terminal at play, [ss_di] slave sio data in terminal 63 led_psd/ss_clk o/i [led]lighting output terminal at play for sd card, [ss_clk] slave sio clock in terminal 64 led_pusb/ss_do o [led]lighting output terminal at play for usb memory, [ss_do] slave sio data out terminal 65 led_access/lrcko o [led]lighting output terminal when memory is being accessed,[lrcko]digital audio channel clock or spdif output terminal 66 led_random/bcko o [led]lighting output terminal at play for random, [bcko]digital audio bit clock output terminal 67 led_repeat/sdatao o [led]lighting output terminal at play for repeat, [sdatao]digital audio data output terminal 68 dvddio io power supply(vdd1) terminal 69 test13 o open (test pin) 70 test14 o open (test pin) 71 sel_usb i at device(usb,sd) connection, 1st device detection selection(h:usb, l:sd) 72 test4 i pull-up to vdd1 system power supply terminal(test pin) 73 test3 i pull-up to vdd1 system power supply terminal(test pin, l: ipl write mode1) 74 test2 i pull-up to vdd1 system power supply terminal(test pin, l: ipl write mode2) 75 test1 i pull-up to vdd1 system power supply terminal(test pin) 76 tmode i connect to gnd(test pin) 77 dvss gnd terminal 78 dvdd_m1 core power supply(vdd2) monitor terminal, connect to bypass condenser 79 dvddio io power supply(vdd1) terminal 80 test0 i connect to gnd(test pin) external dimensions ? block diagram 1.6max 1.4 0.05 0.1 0.05 0.2 0.5 0.1 +0.05 -0.04 0.5 0.15 0.145 +0.05 -0.03 1.0 0.2 12.0 0.1 14.0 0.2 12.0 0.1 14.0 0.2 1 20 21 40 41 60 61 80 BU94702KV lot no. 1 pin mark 1.25 1.25 s 0.08 s 4 b +6 b -4 b 0.08 m figure 1. external dimention figure 2. block diagram unit : mm pkg: vqfp80 drawing no. ex253-5001-2
5/5 rev. a caution (1) power on reset please keep the terminal resetx at the low level when the power suppl y starts. after completely starting up 3.3v system power s upply , afterwards, please make the terminal reset x high level after 100us after the oscillati on of the system clock is steady. moreove r, please make the terminal resetx low level during 100us or more when resetting it while operating.. (2) about compatibility in usb memory device and sd memory card according to the file structure and communica tion speed of an usb memory, sd memory card, this lsi might not play back correctl y. (3) about turning on the power supply current rush might flow momentarily by the order of turning on the power supply and the delay in ic with two or more power supp lies, and note the capacity of the power supply coupling, the powe r supply, and width and drawing the gnd pattern wiring. (4) about absolute maximum rating when the absolute maximum rating such as the applied voltage and the ranges of the operating temperature is exceeded, lsi might be de stroyed. please apply neither voltage nor the temperature that exceeds the absolute maximum rating. please execute physical measures for safety such as fuse when it is thought to exceed the absolute maximum rating, and examine it so that the condition to exceed the absolute maximum rating is not applied to lsi. (5) about gnd voltage in any state of operation must be the lowest voltage about the voltage of the terminal gnd. please actually confirm the voltage of each terminal is not a voltage that is lower than the terminal gnd including excessive phenomenon. (6) about design of overheating malfunction preventive circuit please design overheating malfunction preventive circuit with an enough margin in consideration of a permissible loss in the s tate of using actually. (7) about the short between terminals and the mounting by mistake please note the direction and the gap of position of lsi enough a bout lsi when you mount on the substrate. lsi might be destroy ed when mounting by mistake and energizing. moreover, lsi might be destr oyed when short-circuited by entering of the foreign substances between the terminal and gnd, between terminals, betw een the terminal and the power supply of lsi. (8) about operation in strong electromagnetic field use in strong electromagnetic field has the possib ility of malfunctioning and evaluate it enough, please. (9) about 2x speed recording recording to a memory with slow access speed may require data connection operation. 2x speed recording to all the memories cannot be guaranteed. (10) power off or memory disconnection under memory writing the sudden power off or memory disconnection during recording or f ile write operation to a memory may break the data in a memor y. (11) browsing operation with a memory with slow access speed, browsing operation during music playing may generate skipping. (12) cd-rom playing cd-rom playing operation is premised on data being inputted so that an internal data buffer may not become empty. when an input does not meet the deadline and internal data buffers become empty, skipping occurs. (13) playing time of mp3 file the playing time of an mp3 file may shift when fast forward playing, rewinding playing, and vbr playing. (14) write-in operation exceeding memory size when memory size is exceeded, ic will stop writing to a file and will be in an error condition. (15) write-in operation of the file size exceeding fat specification when file size is exceeded, ic will stop writing to a file and will be in an error condition. (16) about wma windows media audio is the music compression technology which microsoft corp. developed. windows media is the registered trademark of u.s. microsoft corporation in the u.s., and other countries. (17) about i 2 c format i/f although this lsi has adopted the i 2 c format, the level shifter circuit is not built in. for this reason, level shifter is needed for connection with the device besides the range of operating power supply voltage of this lsi.
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