NRF24L01P-R7 datasheet(49/78 Pages) NORDIC

tên linh kiện	NRF24L01P-R7

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Revision 1.0

Page 49 of 78

nRF24L01+ Product Specification

7.9

Compatibility with ShockBurst™

You must disable Enhanced ShockBurst™ for backward compatibility with the nRF2401A, nRF2402,

nRF24E1 and nRF24E2. Set the register EN_AA = 0x00 and ARC = 0 to disable Enhanced ShockBurst™.

In addition, the nRF24L01+ air data rate must be set to 1Mbps or 250kbps.

7.9.1

ShockBurst™ packet format

Figure 25. shows the packet format with MSB to the left.

Figure 25. A ShockBurst™ packet compatible with nRF2401/nRF2402/nRF24E1/nRF24E2 devices.

The ShockBurst™ packet format has a preamble, address, payload and CRC field that are the same as

the Enhanced ShockBurst™ packet format described in section 7.3 on page 28.

The differences between the ShockBurst™ packet and the Enhanced ShockBurst™ packet are:

•

The 9 bit Packet Control Field is not present in the ShockBurst™ packet format.

•

The CRC is optional in the ShockBurst™ packet format and is controlled by the EN_CRC bit in the

CONFIG

Preamble 1 byte

Address 3-5 byte

Payload 1 - 32 byte

CRC 1-2

byte

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