NRF2401 Datasheet, PDF (16/37 Pages) List of Unclassifed Manufacturers – Single chip 2.4 GHz Transceiver

PRODUCT SPECIFICATION
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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.
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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:
• 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.
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.
PRE-AMBLE ADDRESS
PAYLOAD
Figure 10 Data packet set-up
CRC
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For direct mode operation only the two first bytes (bit[15:0]) of the configuring word
are relevant.
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Revision: 1.0
Page 16 of 37
March 2003