SLAU902A September 2023 – January 2024
GPO1 supports input configuration options through J44 header, but only one setting is allowed at a time. GPO1 can be configured for general purpose output, a PDM/Digital MIC clock, a Serial Peripheral Interface (SPI) data output or a second audio serial interface (ASI2). In Audio Serial Interface, GPO1 can be configured as either the WCLK, BCLK in controller mode or DOUT in controller/target mode. This is shown in the figure below.