SLAU902A September 2023 – January 2024
GPI1 supports input configuration options through J45 header, but only one setting is allowed at a time. GPI1 can be configured for general purpose input, a PDM/Digital MIC data, a Serial Peripheral Interface (SPI) device select or a second audio serial interface (ASI2). In Audio Serial Interface, GPI1 can be configured as either the WCLK, BCLK or DIN in target mode. GPI1 can be configured to receive MCLK as well for controller mode. This is shown in the figure below.