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參數(shù)資料
| 型號(hào)： | PT8401 |
| 廠商： | Princeton Technology Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | MP3 Audio Decoder |
| 中文描述： | MP3音頻解碼器 |
| 文件頁數(shù)： | 7/28頁 |
| 文件大?。?/td> | 228K |
| 代理商： | PT8401 |
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Tel : 886-2-29162151
Fax: 886-2-29174598
URL:
http://www.princeton.com.tw
MP3 Audio Decoder
PT8401
PT8401 v 1.3
Page 7
Updated March 2002
Princeton Technology Corp.
0
1
Left
Left
Right
Right
The default output waveform is show in
Figure 4
. Each PCM sample consists of a 2's complement
16-bit MSB-first data and another 16 bits of blank data forming 32 bits data in each channel.
ADQO is valid at the rising edge of ACKQO and the last bit of a sample is aligned with the edges of
ALRQO. However, PT8401 offers 3-bit, eight combinations to fit different kinds of audio DACs via
the start-up configuration or command registers.
Bit 0 : 32/16 bits per sample selection. If 16-bit per sample is selected, each channel contains only
16-bit MSB first data.
Bit 1 : ALRQO Left Channel indicating Low/High selection.
Bit 2 : Delay Selection. When this bit is set, the transition of ALRQO is one clock cycle earlier.
This is called I
2
S format.
FIRST SERIAL BITSTREAM INPUT INTERFACE
Serial Bitstream (regardless of whether it is an MPEG audio or ADPCM speech bitstream) comes from
this port. The following three signals are needed to make a complete transfer.
BD1: Serial Bitstream Data Input.
BCK1: Bit Clock Input.
B_ENA1: Serial Data Enable Signal, Active: Low
DATA_REQ : Data Request Signal.
ALRQO
Left Channel
Right Channel
14131211
15
3 2 1 0
4
14131211
15
3 2 1 0
4
141312
5
15
3 2 1 0
4
141312
5
15
3 2 1 0
4
0
1
ADQO
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PT8402 | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:MP3, AAC Decoder IC |
| PT8402B | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:MP3 Audio Decoder IC |
| PT8402B_10 | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:MP3 Audio Decoder IC |
| PT8402B-80LQ | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:MP3 Audio Decoder IC |
| PT8402B-LQ | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:MP3 Audio Decoder IC |
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