nRF2402 Nordic VLSI, nRF2402 Datasheet - Page 13

• Manufacturer Part Number: nRF2402
• Description: NRF2402 Single Chip 2.4GHz Radio Transmitter
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
For direct mode operation only the 14 first bits (bit[13:0]) of the configuring word is
relevant. For ShockBurst™ also bit[17:14] must be configured.
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 updates the number of bits actually shifted
in during the last configuration.
Ex:
If the nRF2402 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", modus and RF channel are set there is no need to update
this part of the configuration during operation.
Nordic VLSI ASA
Revision: 1.0
11:9
8:7
6:0
19
18
17
16
15
14
13
12
-
Vestre Rosten 81, N-7075 Tiller, Norway
6
1
1
1
1
1
1
1
3
2
7
Table 8 Table of configuration words.
PREAMBLE
PREAMBLE
RFDR_SB
PLL Control
CRC
CRC
CM
XO_F
RF_PWR
RF_CH#
Page 13 of 25
Enable on-chip PREAMBLE generation
8 or 4 bit PREAMBLE
RF data rate (1Mbps requires 16MHz crystal)
Crystal frequency
Close the PLL for test.
UNUSED
8 or 16 bit CRC
Enable on-chip CRC generation
Communication mode (Direct or ShockBurst™)
RF output power
Frequency channel (0 to 127)
-
Phone [phone]
-
Fax [phone]
August 2003