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STA015B датащи(PDF) 24 Page - STMicroelectronics

номер детали STA015B
подробное описание детали  MPEG 2.5 LAYER III AUDIO DECODER WITH ADPCM CAPABILITY
PDF  55 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA015B датащи(HTML) 24 Page - STMicroelectronics

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HEAD_M[15:8]
HEAD_L[7:0]
Address: 0x43, 0x44, 0x45 (67, 68, 69)
Type: RO
Software Reset: 0x00
Hardware Reset: 0x00
Head[1:0] emphasis
Head[2] original/copy
Head[3] copyrightHead
[5:4] mode extension
Head[7:6] mode
Head[8] private bit
Head[9] padding bit
Head[11:10] sampling frequency index
Head[15:12] bitrate index
Head[16] protection bit
Head[18:17] layer
Head[19] ID
Head[20] ID_ex
The HEAD registers can be viewed as logically concatenated to store the MPEG Layer III Header content.
The set of three registers is updated every time the synchronisation to the new MPEG frame is achieved
The meaning of the flags are shown in the following tables:
MPEG IDs
Layer
in Layer III these two flags must be set always to "01".
Protection_bit
It equals "1" if no redundancy has been added and "0" if redundancy has been added.
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
H15
H14
H13
H12
H11
H10
H9
H8
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
H7
H6
H5
H4
H3
H2
H1
H0
IDex
ID
0
0
MPEG 2.5
01
reserved
10
MPEG 2
11
MPEG 1



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