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STA015T データシート(PDF) 33 Page - STMicroelectronics

部品番号 STA015T
部品情報  MPEG 2.5 LAYER III AUDIO DECODER WITH ADPCM CAPABILITY
PDF  55 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA015T データシート(HTML) 33 Page - STMicroelectronics

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STA015 STA015B STA015T
PCMCROSS
Address: 0x56 (86)
Type: R/W
Software Reset: 0x00
Hardware Reset: 0x00
The default configuration for this register is ’0x00’.
MFSDF (X)
Address: 0x61 (97)
Type: R/W
Software Reset: 0x07
Hardware Reset: 0x07
The register contains the values for PLL X divider (see Fig. 7).
The value is changed by the internal STA015 Core, to set the clocks frequencies, according to the incom-
ing bitstream. This value can be even set by the user to select the PCM interface configuration.
The VCO output frequency is divided by (X+1). This register is a reference for 32KHz and 48KHz input
bitstream.
DAC_CLK_MODE (99)
Address: 0x63
Type: RW
Software Reset: 0x00
Hardware Reset: 0x00
This register is used to select the operating mode for OCLK clock signal. If it is set to “1”, the OCLK fre-
quency is fixed, and it is mantained to the value fixed by the user even if the sampling frequency of the
incoming bitstream changes. It the MODE flag is set to f0f, the OCLK frequency changes, and can be set
to (512, 384, 256) * Fs. The default configuration for this mode is 256 * Fs. When this mode is selected,
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
Description
X
X
X
X
X
X
0
0
Left channel is mapped on the left output.
Right channel is mapped on the Right output
X
X
X
X
X
X
0
1
Left channel is duplicated on both Output channels.
X
X
X
X
X
X
1
0
Right channel is duplicated on both Output channels
X
X
X
X
X
X
1
1
Right and Left channels are toggled
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
X
X
X
M4M3M2M1M0
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
XX
XXXXX
MODE



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