NRF52810-QFAA-R datasheet(210/483 Pages) NORDIC

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Peripherals

Number of samples to allocate memory for in EasyDMA mode

Bit number

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

A A A A A A A A A A A A A A A

Reset 0x00000000

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

RW Field

Value Id

Value

Description

RW BUFFSIZE

[0..32767]

Length of DMA RAM allocation in number of samples

6.10.8 Electrical specification

6.10.8.1 PDM Electrical Specification

Symbol

Description

Min.

Typ.

Max.

Units

fPDM,CLK

PDM clock speed

1.032

MHz

tPDM,JITTER

Jitter in PDM clock output

TdPDM,CLK

PDM clock duty cycle

tPDM,DATA

Decimation filter delay

tPDM,cv

Allowed clock edge to data valid

125

tPDM,ci

Allowed (other) clock edge to data invalid

tPDM,s

Data setup time at fPDM,CLK=1.024 MHz

tPDM,h

Data hold time at fPDM,CLK=1.024 MHz

GPDM,default

Default (reset) absolute gain of the PDM module

3.2

tPDM,CLK

CLK

tPDM,s

DIN(R)

DIN (L)

tPDM,h=tPDM,ci

tPDM,s tPDM,h=tPDM,ci

tPDM,cv

Figure 45: PDM timing diagram

6.11 PPI — Programmable peripheral interconnect

The programmable peripheral interconnect (PPI) enables peripherals to interact autonomously with each

other using tasks and events independent of the CPU. The PPI allows precise synchronization between

peripherals when real-time application constraints exist and eliminates the need for CPU activity to

implement behavior which can be predefined using PPI.

4430_161 v1.0

210

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