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Princeton Technology Corp. MP3, AAC Decoder IC Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Preliminary Reference PT8402 Description The PT8402 is a single chip MPEG audio decoder capable of decoding all layers of compressed elementary streams, as specified in MPEG 1 and MPEG 2 ISO standards, including the so-called MP3. Another decoding function that PT8402 supports is AAC (Advance Audio Coding.). In additional to decoding function, this chip also includes a high-performance D/A converter and headphone driver, so the user can eliminate the need of external DAC and output circuit. With external A/D converter, it can also compress incoming signal by using ADPCM algorithm, therefore it can also playback ADPCM bitstream. Features Supports all the Sampling Frequency of MPEG1 (32/44.1/48KHz) and MPEG2(16/22.05/24KHz). Supports AAC ADTS, ADIF Bitstream. Serial Bit Stream Input Interface I2S/Normal Audio Data Output Format delivered via a Serial Bus Power Saving Mode Support DAC Master Clock (256*fs / 384*fs for 16 / 24 bit DAC) is supported Built-in Volume and Digital Equalizer Control Bass Booster, 3D Sound. Low Operating Voltage, 2.5V. 100-pin, LQFP Package Applications Portable MP3 Player PDA CD/MP3 player All other MP3 applications. PT8402 pre 1.0 Page 1 Updated November 2001 Princeton Technology Corp. MP3, AAC Decoder IC Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Preliminary Reference PT8402 Typical Application Flash Memory headphone Host P PT-8402 LCD Panel Key Pads PT8402 pre 1.0 Page 2 Updated November 2001 Princeton Technology Corp. MP3, AAC Decoder IC Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Preliminary Reference PT8402 Pin Configuration PWR_DWN DSPRDY GND_IO GND_IO GPIO5 GND_IO GND_IO VCC_IO 77 76 VCC_IO VCC_IO 81 TEST1 GPIO1 GPIO2 NC GPIO3 GPIO4 GPIO6 VCC_IO GND_IO GPIO0 NC GPIO15 NC GPIO14 NC VCC_K GND_K GPIO13 NC GPIO12 NC VCC_IO GND_IO GPIO11 NC GPIO10 NC GPIO9 NC GPIO8 VCC_IO GND_IO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 P 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 80 P I/O I/O I/O P P I/O I/O P P I/O I/O I/O I/O P P O I/O P I I/O I/O I/O I/O P P I/O OP IP I NC /RST 79 78 CLKI NC NC NC NC NC I PP P 75 GND_PLL P 74 VCC_PLL P O I O I O I I P P O P O P P P I I O I O 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 DVSS DACL LPF1L_IN LPF1L_OUT LPF2L_IN LPF2L_OUT DACIN_L AUXL AVDD12 AVSS0 OUTL AVSS12 OUTR AVDD0 VREF2 AVDD12 AUXR DACin_R LPF2R_OUT LPF2R_IN LPF1R_OUT LPF1R_IN DACR PPOI 28 29 30 31 32 I 33 PP 34 35 I 36 I 37 I I/O I/O P O P O O O P P 38 39 40 41 42 43 44 45 46 47 48 I 49 26 27 50 I PO MCLKO ADQO ALRQO GND_K B_ENA1 VCC_K GND_IO PD_REQ NC GND_IO VCC_IO VCC_IO GND_K ACKO VCC_K BCK1 MCLKIN I2CC PD_ACK PD_ENA Figure 1 : Pin Assignment (P : Power pins, I/O: IO pins) PT8402 pre 1.0 Page 3 TE DVDD I2CD NC BD1 Updated November 2001 Princeton Technology Corp. MP3, AAC Decoder IC Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Preliminary Reference PT8402 Application Circuit Osc. V ref2 DACL 8.2K 0.1 10 MP3 Decoder Flash Memory MIC OP inL 100K /RST IICD IICC DATA_RQ BD1 B_ENA1 BCK1 Lpf1r_out 1000P Lpf1r_in 30K inR 100K Host P ADC Lpf2r_in Lpf2r_out 1000P 100P 3.3K 15K 150 DACIN_L ADQI2 ALRQI2 ACQI2 AUXL Lpf1l_in 30K 500P OUTL 220 To headphone DACR 8.2K Lpf1l_out 1000P 100P 3.3K AUXR Lpf2l_in Lpf2l_out DACIN_R OUTR 220 1000P 150 15K To headphone 500P Figure 2 : Typical Connection Diagram PT8402 pre 1.0 Page 4 Updated November 2001 |
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