1/4 Structure Silicon Monolithic integrated circuit Product name USB host MP3 Decoder LSI Type BU9457KV Applications Audio products, etc. Functions BU9457KV is MP3 decoder IC which contains USB host and SD card 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. 2 I C I/F function contained. FAT analysis function contained. MP3 decode function contained. (available for MPEG1, 2 and 2.5, Layer 1, 2 and 3) Sample Rate Converter contained. System Controller contained. LED Controller contained. KEY matrix Controller contained. Stand Alone mode contained. External processor can control. Audio DAC contained. Sound Effect function contained. 2 Digital Audio Out(I S, S/PDIF) function contained. File Name, Folder Name Sorting. ID3TAG Analysis. Regulator for internal CORE power supply contained. VQFP64pin(0.5mm pitch) Absolute maximum ratings (Ta = 25 C) Parameter Symbol Limits Unit Comment Supply voltage(Analog, I/O) VDD1MAX DVDDIO, VDD PLL, -0.34.5 DAVDD, AVDDC Input voltage VIN -0.3 VDD1 + 0.3 Storage temperature range TSTG -55125 Operating temperature range TOPR -4085 Power dissipation *1 PD 750 *1In the case of use at Ta=25 or more, 7.5mW should be reduced per 1. Radiation resistance design is not arranged. Operating conditions (Ta = 25) Parameter Symbol Limits Unit Comment 3.03.6 DVDDIO,VDD PLL, Supply voltage(Analog, I/O) VDD1 DAVDD, AVDDC MPEG Layer-3 audio coding technology licensed from Fraunhofer IIS and Thomson. The fee related to above license and its administration costs are included in the sales price of this product. REV. B 2/4 Electrical characteristics Unless specified, Ta=25VDD1=3.3V, DVSS=AVSSC=VSS PLL=DAVSS=0V, XIN PLL=16.9344MHz Limits Parameter Symbol Unit Condition MIN. TYP. MAX. <Total > - 50 80 Circuit current (VDD1 USB1) IDD1USB1 mA *1 When USB memory is played. Circuit current (VDD1 SD1) IDD1SD1 - 20 50 mA *1 When SD card is played. <Digital block> 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 H-Level output voltage2 VOH2 VDD1-0.4 VDD1 V IOH=-3.6mA, *5 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 <USB-HOST > 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 15.0 24.8 k *8 <Audio DAC> Distortion rate THD 0.02 % 1kHz, 0dB, sine, *9 Dynamic range DR 88 dB 1kHz, -60dB, sine, *9 S/N ratio S/N 96 dB *9 Max output level VSMAX 0.92 Vrms 1kHz, 0dB, sine, *9 *1 3.3V system I/O, Analog Power supply(VDD1), 1kHz, 0dB, sine-wave playing *3 1-17, 19-20, 25-26, 40, 49-52, 56, 58-61, 63 pin *4 10-11, 14-16, 48-55 pin *5 13 pin *6 21-23, 26 pin *7 41 pin *8 33, 34 pin *9 44, 46 pin REV. B