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NRF52810-QCAA-R Datasheet(PDF) 205 Page - Nordic Semiconductor

Part # NRF52810-QCAA-R
Description  RF52810
PDF  483 Pages
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Manufacturer  NORDIC [Nordic Semiconductor]
Direct Link  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF52810-QCAA-R Datasheet(HTML) 205 Page - Nordic Semiconductor

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Peripherals
This configuration must be retained in the GPIO for the selected I/Os as long as the PDM module is
supposed to be connected to an external PDM circuit.
Only one peripheral can be assigned to drive a particular GPIO pin at a time. Failing to do so may result in
unpredictable behaviour.
PDM signal
PDM pin
Direction
Output value
Comment
CLK
As specified in PSEL.CLK
Output
0
DIN
As specified in PSEL.DIN
Input
Not applicable
Table 43: GPIO configuration before enabling peripheral
6.10.7 Registers
Base address
Peripheral
Instance
Description
Configuration
0x4001D000
PDM
PDM
Pulse-density modulation (digital
microphone interface)
Table 44: Instances
Register
Offset
Description
TASKS_START
0x000
Starts continuous PDM transfer
TASKS_STOP
0x004
Stops PDM transfer
EVENTS_STARTED
0x100
PDM transfer has started
EVENTS_STOPPED
0x104
PDM transfer has finished
EVENTS_END
0x108
The PDM has written the last sample specified by SAMPLE.MAXCNT (or the last sample after a
STOP task has been received) to Data RAM
INTEN
0x300
Enable or disable interrupt
INTENSET
0x304
Enable interrupt
INTENCLR
0x308
Disable interrupt
ENABLE
0x500
PDM module enable register
PDMCLKCTRL
0x504
PDM clock generator control
MODE
0x508
Defines the routing of the connected PDM microphones' signals
GAINL
0x518
Left output gain adjustment
GAINR
0x51C
Right output gain adjustment
PSEL.CLK
0x540
Pin number configuration for PDM CLK signal
PSEL.DIN
0x544
Pin number configuration for PDM DIN signal
SAMPLE.PTR
0x560
RAM address pointer to write samples to with EasyDMA
SAMPLE.MAXCNT
0x564
Number of samples to allocate memory for in EasyDMA mode
Table 45: Register Overview
6.10.7.1 INTEN
Address offset: 0x300
Enable or disable interrupt
4430_161 v1.0
205



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