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參數(shù)資料
| 型號： | AP77016-B07 |
| 英文描述： | USAP77016-B07 MP3 Audio Decoder Middleware User＇s Manual | User＇s Manual[09/2002] |
| 中文描述： | USAP77016 - B07 MP3音頻解碼器中間件用戶手冊|用戶手冊[09/2002] |
| 文件頁數(shù)： | 13/47頁 |
| 文件大小： | 291K |
| 代理商： | AP77016-B07 |
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CHAPTER 1 OVERVIEW
User
’
s Manual U15152EJ2V0UM
13
1.3 Product Overview
1.3.1 Features
Employs AAC decoder algorithm standardized by ISO/IEC
Bit rates correspond to maximum bit rates shown in
Table 1-2 Maximum Bit Rates
Input data is encoded 16-bit linear PCM data sampled at a sampling frequency (
Table 1-1 Sampling
Frequencies
)
Output data is 16-bit linear PCM data of the same frequency as the sampling frequency of input data
1024 samples/frame/channel decoding
Supports ADTS, ADIF, and RAW formats
Provides CRC as error compensation (ADTS format only)
Supports decoding of two front channels
1.3.2 Functions
(1) Decompression processing
Decompression processing converts compressed data to one RAW of 16-bit linear PCM data.
(2) Error compensation
CRC is performed as error compensation processing in ADTS format.
1.3.3 Operating environment
(1) Operable DSPs:
μ
PD77110, 77113A, 77114, 77115, 77210, 77213
(2) Required memory size:
μ
SAP77016-B0B requires memory sizes shown in the following table.
Table 1-3. Required Memory Sizes
Memory
Type
Size [kwords]
Instruction memory
–
8.6
Scratch area
2.0
RAM
Static area
0.7
X memory
ROM
4.0
Scratch area
4.0
RAM
Static area
4.1
Y memory
ROM
3.9
Caution
One word of instruction memory is 32 bits.
One word of X memory or Y memory is 16 bits.
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