NRF2401A View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

NRF2401A

Single chip 2.4 GHz Transceiver

Unspecified 

PRODUCT SPECIFICATION

nRF2401A Single Chip 2.4 GHz Radio Transceiver

nRF2401A in NO

ShockBurstTM

TX (CE=hi)?

YES

uController

Loading ADDR

and PAYLOAD

data

nRF2401A

Calculating CRC

Data content of registers:

ADDR

PAYLOAD

Maximum 256 bits

ADDR

PAYLOAD

CRC

NO

CE=Low?

YES

nRF2401A

Adding Preamble

Pre-

amble

ADDR

PAYLOAD

CRC

nRF2401A

Sending

ShockBurstTM

Package

(250 or 1000kbps)

YES

NO

Sending

completed?

Input FIFO not Empty

Figure 6 Flow Chart ShockBurst™ Transmit of nRF2401A

nRF2401A ShockBurst™ Transmit:

MCU interface pins: CE, CLK1, DATA

1. When the application MCU has data to send, set CE high. This activates

nRF2401A on-board data processing.

2. The address of the receiving node (RX address) and payload data is

clocked into the nRF2401A. The application protocol or MCU sets the

speed <1Mbps (ex: 10kbps).

3. MCU sets CE low; this activates an nRF2401A ShockBurst™

transmission.

4. nRF2401A ShockBurst™:

• RF front end is powered up

• RF package is completed (preamble added, CRC calculated)

• Data is transmitted at high speed (250 kbps or 1 Mbps configured

by user).

Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989

Revision: 1.1

Page 11 of 40

March 2006

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