Schematic==>Tree Tool Box ==>IO==>GPIO==>Output==>Interface Write
What's the Interface Write function?
ADAU1761 can use Interface Write?
This is where you can access the GPIO pins on the part using the communications interface. (SPI or I2C) The GPIO pins are shadowed to these register locations. So if a GPIO pin is setup as an output then you can set the pin high or low by writing to a specific address using the control interface. The LSB of the 8-bit register will set the pin. Likewise, when the GPIO pin is set as an input, then the value of the pin can be read by using the register address and looking at the LSB.
Here is an example; So you can setup a GPIO pin to be an output and inside SigmaStudio you can output to that GPIO pin a signal presence signal. (or a clipping signal). The pin can drive an LED so there will be a visible indication. Then by having a system controller read the register it can also monitor and react to this signal presence or clipping signal.
The register addresses are detailed in table 32 in the datasheet. It is located on page 50.
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