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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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