ADAU1761, output DIG0 usage
I am working on a project using IO > Output to export data to external MCU.
I found the output port has DACx and DIGx selection.
Can I know how can I read the DIG0..DIG7 by external MCU? What is the address location and data format for the DIG0..DIG7?
I found some document suggest to use "Basic DSP > DSP Functions > DSP Readback" block to read signal level.
Can I know what is the difference between these two reading methods?
Which method is better if I want to read the audio envelop from external MCU?
Thanks in advance.
Audio Signal Processors
SigmaDSP Audio Processors
adau1761
The DIGx outputs are I2S serial audio outputs. They will output audio on the ADC_SDATA/GPIO1 pins.
If the serial port is set up in 2 channel mode, DIG0 and DIG1 will be output on that pin in I2S mode.
If the serial port is set up in 4 channel mode, DIG0, DIG1, DIG2 and DIG3 will be output on that pin in TDM mode with 4 channels.
If the serial port is set up in 8 channel mode, DIG0 through DIG7 will be output on that pin in TDM mode with 8 channels.
There is an anomaly in the ordering of the channels in TDM mode. The PDF in this post describes the routing:
Sorry, I think I made mistake with DIGx usage. Thanks for your answer.
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