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參數(shù)資料
| 型號： | 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)： | 6/28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
ADPCM Decoding Mode
: Same as MP3 Decoding Mode, except that the commands
SetMode
and
AdpcmMode
have to be set to ADPCM Decoding Mode.
The basic operation modes of PT8401 are Stop and Play. After all the necessary commands are set properly
(like
SP_SEL , PLL setting etc.), PT8401 will enter decoding/encoding process by issuing a
Play
command
at address 0x40 through I
2
C interface.
Besides, the MP3 decoding, PT8401 offers two additional modes, namely: Pause and Fast Forward . The
Pause Mode will stop MP3 decoding, wait for the PLAY command set to the other mode. If PLAY=0x01
is issued, PT8401 will resume playing from the broken point. The Fast Forward Mode is achieved with the
help of command Fward_Num(number of frame to play) and Skip_Num(number of frame to skip.
PT8401 v 1.3
Page 6
Updated March 2002
Princeton Technology Corp.
Serial Audio Interface
SERIAL OUTPUT INTERFACE
In the serial audio output interface, following signals are generated:
MCLK : Master Clock, configured as 256fs or 384fs according to
MclkSel
command.
ADQO: Serial Data Output
ACKQO: Bit Clock Output, derived from MCLK
ALRQO: Left/Right Channel Word Selection
Figure 4: Serial Audio Output Timing
ACKQO
ADQO
ALRQO
14 13 12 11
15
3 2 1
0
4
14 13 12 11
15
3 2
1 0
4
Left Channel
Right Channel
15
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| 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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