Datasheet

Figure 51-2. Data Format: Frames, Slot, Bits and Clocks
I
2
S supports multiple data formats such as:
• 32-, 24-, 20-, 18-, 16-, and 8-bit mono or stereo format
• 16- and 8-bit compact stereo format, with left and right samples packed in the same word to reduce
data transfers
In mono format, Transmit mode, data written to the left channel is duplicated to the right output channel.
In mono format, Receiver mode, data received from the right channel is ignored and data received from
the left channel is duplicated in to the right channel.
In mono format, TDM Transmit mode with more than two slots, data written to the even-numbered slots is
duplicated in to the following odd-numbered slot.
In mono format, TDM Receiver mode with more than two slots, data received from the even-numbered
slots is duplicated in to the following odd-numbered slot.
Mono format can be enabled by writing a '1' to the MONO bit in the Serializer m Control register
(SERCTRLm.MONO).
I
2
S support different data frame formats:
• 2-channel I
2
S with Word Select
• 1- to 8-slot Time Division Multiplexed (TDM) with Frame Sync and individually enabled slots
• 1- or 2-channel Pulse Density Modulation (PDM) reception for MEMS microphones
• 1-channel burst transfer with non-periodic Frame Sync
In 2 channel I
2
S mode, number of slots configured is one or two and successive data words corresponds
to left and right channel. Left and right channel are identified by polarity of Word Select signal (FSn
signal). Each frame consists of one or two data word(s). In the case of compact stereo format, the
number of slots can be one. When 32-bit slot size is used, the number of slots can be two.
SAM D5x/E5x Family Data Sheet
I2S - Inter-IC Sound Controller
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1892