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NRF9160-SICA-R7 Datasheet(PDF) 120 Page - Nordic Semiconductor

Part # NRF9160-SICA-R7
Description  nRF9160 Product Specification
PDF  400 Pages
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Manufacturer  NORDIC [Nordic Semiconductor]
Direct Link  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF9160-SICA-R7 Datasheet(HTML) 120 Page - Nordic Semiconductor

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Peripherals
• 8, 16 and 24-bit sample width
• Low-jitter Master Clock generator
• Various sample rates
I2S
TXD.PTR
RXD.PTR
RXTXD.MAXCNT
PSEL.SCK
PSEL.LRCK
PSEL.MCK
PSEL.SDIN
Master clock
generator
CONFIG.MCKEN
CONFIG.MCKFREQ
Serial tranceiever
PSEL.SDOUT
CONFIG.MODE
CONFIG.FORMAT
CONFIG.RATIO
CONFIG.ALIGN
Div
Div
RAM
MCK
EasyDMA
Figure 23: I2S master
6.7.1 Mode
The I2S protocol specification defines two modes of operation, Master and Slave.
The I2S mode decides which of the two sides (Master or Slave) shall provide the clock signals LRCK and
SCK, and these signals are always supplied by the Master to the Slave.
6.7.2 Transmitting and receiving
The I2S module supports both transmission (TX) and reception (RX) of serial data. In both cases the serial
data is shifted synchronously to the clock signals SCK and LRCK.
TX data is written to the SDOUT pin on the falling edge of SCK, and RX data is read from the SDIN pin on
the rising edge of SCK. The most significant bit (MSB) is always transmitted first.
Note: When starting a transmission in master mode, two frames (two left-and-right sample pairs)
of value zero will be transmitted after triggering the START task, prior to the RXTXD.MAXCNT
samples specified by the TXD.PTR pointer.
TX and RX are available in both Master and Slave modes and can be enabled/disabled independently in
the CONFIG.TXEN on page 134 and CONFIG.RXEN on page 134.
Transmission and/or reception is started by triggering the START task. When started and transmission
is enabled (in CONFIG.TXEN on page 134), the TXPTRUPD event will be generated for every
RXTXD.MAXCNT on page 137 number of transmitted data words (containing one or more samples).
4418_1315 v2.0
120



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