37.4 Signal Description

Table 37-1. 
Pin Name Pin Description Type
MCKn Host Clock for Clock Unit n Input/Output
SCKn Serial Clock for Clock Unit n Input/Output
FSn 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 I/O sets, listed in their `IOSET' column in the pinout tables.

For these peripherals, it is mandatory to use I/Os that belong to the same I/O set. The timings are not guaranteed when I/Os from different I/O sets are mixed. Refer to the Pinout and Packaging chapter to get IOSET definitions.