37.4 Signal Description
| Pin Name | Pin Description | Type |
|---|---|---|
| MCKn [n=0..1] | Host Clock for Clock Unit n | Input/Output |
| SCKn [n=0..1] | Serial Clock for Clock Unit n | Input/Output |
| FSn [n=0..1] | I2S Word Select or TDM Frame Sync for Clock Unit n | Input/Output |
| SDO | Serial Data Output for Transmit Serializer | Output |
| SDI | Serial Data Input for Receive Serializer | Input |
CAUTION: I/Os for I2S peripheral are grouped into IO sets, listed in
their ‘IOSET’ column in the pinout tables. For this peripheral, it is mandatory to use I/Os
that belong to the same IO set. The timings are not guaranteed when IOs from different IO
sets are mixed. Refer to the Pinout and Packaging chapter to get IOSET definitions.