NRF7002-QFAA-R7 datasheet(9/61 Pages) NORDIC

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4 Host connection

nRF7002 is a wireless companion device that is connected to a host MCU or application processor. It is

connected to the host through a QSPI (6-wire) or SPI (4-wire) for data and a 3-wire or 4-wire coexistence

control interface for hosts that include a Bluetooth LE/IEEE 802.15.4 radio. In addition, two lines

(HOST_IRQ and BUCKEN) are required. The user application executes on the host MCU.

The following figure shows a system with nRF7002 and a host MCU.

nRF7002

Host MCU

Diplexer

QSPI/SPI interface

Coex interface

(if applicable)

ANT 5 GHz

ANT 2.4 GHz

HOST_IRQ

BUCKEN

Figure 2: Functional block diagram with generic host MCU

nRF7002 is designed to support radio coexistence and can be used together with another nRF Series

device. The following figure shows nRF7002 together with nRF5340 to achieve a combined Bluetooth LE

and Wi-Fi solution. nRF5340 functions as a host and common interface to the wireless system.

nRF7002

nRF5340

Diplexer

QSPI/SPI

interface

Coex

interface

ANT 5 GHz

ANT 2.4 GHz

HOST_IRQ

ANT

BUCKEN

Figure 3: Functional block diagram with nRF host and separate antennas

Using a separate antenna configuration enables simultaneous 2.4 GHz Wi-Fi and Bluetooth LE/IEEE

802.15.4 operation. For cost or area-sensitive applications that do not need simultaneous operation, a

single antenna configuration is also possible. This requires an antenna switch, which can be controlled

from the radio coexistence algorithm.

The following figure shows a single antenna configuration with nRF7002.

4486_184 v1.0

NRF7002-QFAA-R7 Datasheet(PDF) 9 Page - Nordic Semiconductor