STA015T datasheet(25/56 Pages) STMICROELECTRONICS

tên linh kiện	STA015T

Giải thích chi tiết về linh kiện	MPEG 2.5 LAYER III AUDIO DECODER WITH ADPCM CAPABILITY

PDF	56 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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25 / 56 page

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STA015

Bitrate_index

indicates the bitrate (Kbit/sec) depending on the MPEG ID.

Sampling Frequency

indicates the sampling frequency of the encoded audio signal (KHz) depending on the MPEG ID

Padding bit

if this bit equals ’1’, the frame contains an additional slot to adjust the mean bitrate to the sampling fre-

quency, otherwise this bit is set to ’0’.

Private bit

Bit for private use. This bit will not be used in the future by ISO/IEC.

Mode

Indicates the mode according to the following table. The joint stereo mode is intensity_stereo and/or

ms_stereo.

bitrate index

ID = 1

ID = 0

’0000’

free

’0001’

’0010’

’0011’

’0100’

’0101’

’0110’

’0111’

’1000’

112

’1001’

128

’1010’

160

’1011’

192

112

’1100’

224

128

’1101’

256

144

’1110’

320

160

’1111’

forbidden

Sampling Frequency

MPEG1

MPEG2

MPEG2.5

’00’

44.1

22.05

11.03

’01’

’10’

’11’

reserved

mode

mode specified

’00’

stereo

’01’

joint stereo (intensity_stereo and/or ms_stereo)

’10’

dual_channel

’11’

single_channel (mono)

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