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SC14CVMDECT 데이터시트(PDF) 26 Page - Dialog Semiconductor

부품명 SC14CVMDECT
상세설명  Cordless Voice Module
PDF  57 Pages
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Datasheet
Revision 3.0
28-Jul-2015
CFR0011-120-00-FM Rev 5
26 of 57
© 2013 Dialog Semiconductor
SC14CVMDECT SF
Cordless Voice Module
FINAL
4.12.7 PCM Interface for PP
The SC14CVMDECT SF supports PCM interface func-
tionality to connect to an external audio source/destina-
tion. Refer to document [2] for detailed information.
• PCM interface mode
supports only master mode.
• PCM_FSC frequency
supports 8 kHz and 16 kHz.
• LENGTH of PCM_FSC
The PCM interface supports the following options:
• 1: The length of PCM_FSC pulse is equal to 1
data bit.
• 8: The length of PCM_FSC pulse is equal to 8
data bits.
• 16: The length of PCM_FSC pulse is equal to 16
data bits.
• 32: The length of PCM_FSC pulse is equal to 32
data bits.
• Start position of FSC
The PCM interface supports the following options:
• The FSC pulse starts 1 data bit before MSB bit of
the PCM channel 0 data.
• The FSC pulse starts at the same time as the
MSB bit of the PCM channel 0 data.
• PCM clock
PCM clock is delivered to an external slave PCM
device from SC14CVMDECT SF.
• PCM Data mode
Supports only linear 16 bit PCM.
Figure 26: PCM bus with compressed wideband using A-law/
-law, G726 used on air interface
PCM CLK
16 KHz FSC
PCM in
PCM out
Channel 0
Channel 0
Channel 1
Channel 1
Channel 0
Channel 0
Channel 1
Channel 1
AP_DATA_FORMAT_CWB_ALAW / AP_DATA_FORMAT_CWB_ULAW with 16 kHz frame sync (G.726 on air):
1st frame
1st frame
1st frame
1st frame
PCM CLK
8 KHz FSC
PCM in
PCM out
Channel 0
Channel 0
Channel 1
Channel 1
Channel 0
Channel 0
Channel 1
Channel 1
Channel 0
Channel 0
Channel 1
Channel 1
Channel 0
Channel 0
Channel 1
Channel 1
AP_DATA_FORMAT_CWB_ALAW / AP_DATA_FORMAT_CWB_ULAW with 8 kHz frame sync (G.726 on air):
1st frame
1st frame
2nd frame
2nd frame
1st frame
1st frame
2nd frame
2nd frame
2nd frame
2nd frame
2nd frame
2nd frame
1st frame
1st frame
1st frame
1st frame
1st frame
1st frame
1st frame
1st frame



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