Datasheet

29.4 Signal Description
Table 29-1. Master Mode
Pin Name Pin Description Type
MCKn Master Clock for Clock Unit n Input/Output
SCKn Serial Clock for Clock Unit n Input/Output
FSn I
2
S Word Select or TDM Frame Sync for Clock Unit n Input/Output
SDm Serial Data Input or Output for Serializer m Input/Output
Table 29-2. Slave Mode
Pin Name Pin Description Type
MCKn Master Clock Input
SCKn Serial Clock for Clock Unit n Input
FSn I
2
S Word Select or TDM Frame Sync Input
SDm Serial Data Input or Output for Serializer m Input/Output
Table 29-3. Controller Mode
Pin Name Pin Description Type
MCKn Master Clock for Clock Unit n Output
SCKn Serial Clock for Clock Unit n Output
FSn I
2
S Word Select or TDM Frame Sync Output
SDm Not Applicable Not Applicable
Note: One signal can be mapped on several pins.
Related Links
7. I/O Multiplexing and Considerations
29.5 Product Dependencies
In order to use this module, other parts of the system must be configured correctly, as described below.
29.5.1 I/O Lines
Using the I
2
S I/O lines requires the I/O pins to be configured.
The I
2
S pins may be multiplexed with I/O Controller lines. The user must first program the I/O Controller
to assign the desired I
2
S pins to their peripheral function. If the I
2
S I/O lines are not used by the
application, they can be used for other purposes by the I/O Controller. It is required to enable only the I
2
S
inputs and outputs actually in use.
Related Links
23. PORT - I/O Pin Controller
SAM D21 Family
I2S - Inter-IC Sound Controller
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 627