nRF2401 Nordic VLSI, nRF2401 Datasheet - Page 16

• Manufacturer Part Number: nRF2401
• Description: Single Chip 2.4GHz Radio Transceiver
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
All configuration of the nRF2401 is done via a 3-wire interface to a single
configuration register. The configuration word can be up to 15 bytes long for
ShockBurst™ use and up to 2 bytes long for direct mode.
The configuration word in ShockBurst™ enables the nRF2401 to handle the RF
protocol. Once the protocol is completed and loaded into nRF2401 only one byte,
bit[7:0], needs to be updated during actual operation.
The configuration blocks dedicated to ShockBurst™ is as follows:
NOTE:
These configuration blocks, with the exception of the CRC, are dedicated for the
packages that a nRF2401 is to receive.
In TX mode, the MCU must generate an address and a payload section that fits the
configuration of the nRF2401 that is to receive the data.
When using the nRF2401 on-chip CRC feature ensure that CRC is enabled and uses
the same length for both the TX and RX devices.
For direct mode operation only the two first bytes (bit[15:0]) of the configuring word
are relevant.
Nordic VLSI ASA
Revision: 1.0
PRE-AMBLE
Payload section width: Specifies the number of payload bits in a RF package.
This enables the nRF2401 to distinguish between payload data and the CRC
bytes in a received package.
Address width: Sets the number of bits used for address in the RF package.
This enables the nRF2401 to distinguish between address and payload data.
Address (RX Channel 1 and 2): Destination address for received data.
CRC: Enables nRF2401 on-chip CRC generation and de-coding.
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ADDRESS
Vestre Rosten 81, N-7075 Tiller, Norway
Figure 10 Data packet set-up
Page 16 of 37
PAYLOAD
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Phone [phone]
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Fax [phone]
CRC
March 2003