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CMX7261 Voice Multi-transcoder
6.2
CMX7261
Signal Interfaces
In half duplex mode the transcoder output can be sent to one, any two, or all of the three possible output
ports – C-BUS (for transfer to host controller), PCM (for transfer to external DAC) or analogue audio
output. In full duplex mode a single output must be selected. The input to the transcoder must come from
one of the three input ports – C-BUS (input data from the host controller), PCM (from the external ADC) or
analogue audio input.
Internal ADC DAC
Balanced/Single-ended
Audio Ouput
DAC
AUDIO
FILTER
Transcoder Output
AUDIO
FILTER
TRANSCODER
ADC
Transcoder Input
Balanced/Single-ended
Audio Input
Audio_Out
FIFO
External
ADC
Control
Audio_In
FIFO
C-BUS Interface
Host µC
External
DAC
Figure 14 CMX7261 Inputs and Outputs
 2012 CML Microsystems Plc
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