NRF2402 Datasheet, PDF (14/31 Pages) List of Unclassifed Manufacturers – Single chip 2.4 GHz Transmitter

PRODUCT SPECIFICATION
nRF2402/nRF2402G Single Chip 2.4 GHz Radio Transmitter
Configuration for Direct Mode operation
For direct mode operation only the 14 first bits (bit[13:0]) of the configuring word is relevant.
Configuration Word overview
Bit Number
position of bits
Name
Function
19
6 PLL Control
18
1
17
1 PREAMBLE
16
1 PREAMBLE
15
1 CRC
14
1 CRC
13
1 CM
12
1 RFDR_SB
11:9
3 XO_F
8:7
2 RF_PWR
6:0
7 RF_CH#
Close the PLL for test.
UNUSED
Enable on-chip PREAMBLE generation
UNUSED, must be 1
8 or 16 bit CRC
Enable on-chip CRC generation
Communication mode (Direct or ShockBurst™)
RF data rate (1Mbps requires 16MHz crystal)
Crystal frequency
RF output power
Frequency channel (0 to 127)
Table 8 Table of configuration words.
The configuration word is shifted in MSB first on positive CLK edges. New configuration is
enabled on the negative edge of CS.
NOTE!
On the negative edge of CS, the nRF2402/nRF2402G updates the number of bits actually
shifted in during the last configuration.
Ex:
If the nRF2402/nRF2402G is to be configured for Preamble and CRC in ShockBurst™, a
total of 17 bits must be shifted in during the first configuration after VDD is applied.
Once the wanted "protocol" and modus are set there is no need to update this part of the
configuration during operation. If RF channel is to be changed, only the RF_CH# bits need to
be updated.
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 2.0
Page 14 of 31
April 2005