ETC PT8402

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
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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
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Portable MP3 Player
PDA
CD/MP3 player
All other MP3 applications.
PT8402 pre 1.0
Page 1
Updated November 2001
Princeton Technology Corp.
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Preliminary Reference
MP3, AAC Decoder IC
PT8402
Typical Application
Flash Memory
headphone
Host µP
LCD
Panel
PT8402 pre 1.0
PT-8402
Key Pads
Page 2
Updated November 2001
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Princeton Technology Corp.
Preliminary Reference
MP3, AAC Decoder IC
PT8402
1
2
3
NC
4
GPIO15
5
NC
6
GPIO14
7
100
P
I/O
10
P
GPIO13
11
I/O
NC
12
GPIO12
13
94
93
I/O
92
91
I/O
90
89
88
87
I/O P P
86
85
I/O
84
83
O P
82
81
80
I P
I
79
78
I
GND_IO
16
P
GPIO11
17
I/O
NC
18
GPIO10
19
73
DVSS
72
DACL
I
71
LPF1L_IN
O
I
70
LPF1L_OUT
O
68
LPF2L_IN
LPF2L_OUT
I
67
DACIN_L
I
66
AUXL
P
65
AVDD12
P
64
AVSS0
O
P
63
62
OUTL
AVSS12
O
61
OUTR
P
60
AVDD0
P
59
VREF2
P
58
I
I
57
AVDD12
AUXR
56
DACin_R
O
55
LPF2R_OUT
I
54
LPF2R_IN
O
53
LPF1R_OUT
I
P O
52
I/O
I/O
22
I/O
35
36
37
38
49
39
40
41
42
43
44
45
46
47
48
69
51
LPF1R_IN
DACR
50
TE
DVDD
34
GND_K
33
I
ACKO
32
I I/O I/O P O P O O O P P
VCC_K
31
I
ADQO
ALRQO
30
I
GND_IO
29
P P
MCLKO
28
I
I2CD
NC
27
PD_REQ
NC
26
P P O I
VCC_IO
O
BCK1
P
MCLKIN
I2CC
25
BD1
GND_IO
GND_K
P
B_ENA1
VCC_K
24
PD_ENA
VCC_IO
PD_ACK
23
P P
P 75 GND_PLL
P 74 VCC_PLL
P
20
21
77 76
O
14
P
GND_IO
VCC_IO
NC
/RST
PWR_DWN
VCC_IO
CLKI
DSPRDY
GND_IO
NC
GPIO6
NC
VCC_IO
GPIO5
GND_IO
NC
GPIO4
NC
GPIO2
TEST1
GND_IO
NC
GPIO3
95
I/O
15
GPIO8
96
I I/O
8
GND_K
NC
97
I/O
P
NC
GPIO9
98
I/O
9
NC
VCC_IO
99
I/O P
GND_IO
NC
VCC_K
P
VCC_IO
VCC_IO
GND_IO
GPIO0
GPIO1
NC
Pin Configuration
Figure 1 : Pin Assignment (P : Power pins, I/O: IO pins)
PT8402 pre 1.0
Page 3
Updated November 2001
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Princeton Technology Corp.
Preliminary Reference
MP3, AAC Decoder IC
PT8402
Application Circuit
Osc.
V ref2
MP3 Decoder
Flash Memory
DACL
0.1µ
/RST
10µ
8.2K
Host µP
Lpf1r_in
IICD
30K
IICC
DATA_RQ
Lpf1r_out
BD1
B_ENA1
Lpf2r_in
1000P
100P
3.3K
Lpf2r_out
BCK1
1000P
15K
150µ
DACIN_L
MIC
OP
ADC
ADQI2
ALRQI2
500P
To
headphone
OUTL
220µ
DACR
ACQI2
8.2K
Lpf1l_in
AUXL
inL
30K
100K
Lpf1l_out
100P
Lpf2l_in
AUXR
inR
1000P
Lpf2l_out
100K
DACIN_R
3.3K
1000P
15K
150µ
To
headphone
OUTR
500P
220µ
Figure 2 : Typical Connection Diagram
PT8402 pre 1.0
Page 4
Updated November 2001