NRF52811-QCAA-R datasheet(180/444 Pages) NORDIC

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Peripherals

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

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

Access

Field

Value ID

Value

Description

ACCDBLREAD

[0..15]

Snapshot of the ACCDBL register. This field is updated when

the READCLRACC or RDCLRDBL task is triggered.

6.13.8 Electrical specification

6.13.8.1 QDEC Electrical Specification

Symbol

Description

Min.

Typ.

Max.

Units

tSAMPLE

Time between sampling signals from quadrature decoder

128

131072 µs

tLED

Time from LED is turned on to signals are sampled

511

µs

6.14 RADIO — 2.4 GHz radio

The 2.4 GHz radio transceiver is compatible with multiple radio standards such as 1 Mbps, 2 Mbps and

long range Bluetooth® low energy. IEEE 802.15.4 250 kbps mode is fully supported as well as Nordic's

proprietary 1 Mbps and 2 Mbps modes of operation.

Listed here are main features for the RADIO:

• Multidomain 2.4 GHz radio transceiver

• 1 Mbps, 2 Mbps, and long range (125 kbps and 500 kbps mode) Bluetooth® low energy modes

• Angle-of-arrival (AoA) and angle-of-departure (AoD) direction finding using Bluetooth® low energy

• 250 kbps IEEE 802.15.4 mode

• 1 Mbps and 2 Mbps Nordic proprietary modes

• Best in class link budget and low power operation

• Efficient data interface with EasyDMA support

• Automatic address filtering and pattern matching

EasyDMA, in combination with an automated packet assembler, packet disassembler, automated CRC

generator and CRC checker, makes it easy to configure and use the RADIO. See the following figure for

details.

RADIO

2.4 GHz

receiver

2.4 GHz

transmitter

RSSI

EasyDMA

Dewhitening

Whitening

IFS

control unit

CRC

Address

match

Bit counter

RAM

Payload

PACKETPTR

Packet

disassembler

Packet

assembler

Device

address

match

Packet synch

Payload

MAXLEN

ANT1

Figure 57: RADIO block diagram

4454_140 v1.0

180

NRF52811-QCAA-R Datasheet(PDF) 180 Page - Nordic Semiconductor

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