NRF52811-QCAA-R7 datasheet(35/444 Pages) NORDIC

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Core components

4.5.1.5 APPROTECT

Address offset: 0x208

Access port protection

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

Reset 0xFFFFFFFF

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Access

Field

Value ID

Value

Description

RW PALL

Enable or disable access port protection.

See Debug on page 38 for more information.

Disabled

0xFF

Disable

Enabled

0x00

Enable

4.6 EasyDMA

EasyDMA is a module implemented by some peripherals to gain direct access to Data RAM.

EasyDMA is an AHB bus master similar to CPU and is connected to the AHB multilayer interconnect for

direct access to Data RAM. EasyDMA is not able to access flash.

A peripheral can implement multiple EasyDMA instances to provide dedicated channels. For example,

for reading and writing of data between the peripheral and RAM. This concept is illustrated in EasyDMA

example on page 35.

Peripheral

READER

Peripheral

core

AHB multilayer

AHB

WRITER

AHB

RAM

EasyDMA

Figure 4: EasyDMA example

4454_140 v1.0

NRF52811-QCAA-R7 Datasheet(PDF) 35 Page - Nordic Semiconductor

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