NRF2401A Datasheet, PDF (17/38 Pages) List of Unclassifed Manufacturers – Single chip 2.4 GHz Transceiver

PRODUCT SPECIFICATION
nRF2401A Single Chip 2.4 GHz Radio Transceiver
Configuration Word overview
Bit Number
position of bits
Name
143:120
119:112
111:104
103:64
63:24
23:18
17
24 TEST
8
DATA2_W
8
DATA1_W
40 ADDR2
40 ADDR1
6
ADDR_W
1
CRC_L
Function
Reserved for testing
Length of data payload section RX channel 2
Length of data payload section RX channel 1
Up to 5 byte address for RX channel 2
Up to 5 byte address for RX channel 1
Number of address bits (both RX channels).
8 or 16 bit CRC
16
1
CRC_EN
Enable on-chip CRC generation/checking.
15
1
RX2_EN
Enable two channel receive mode
14
1
CM
Communication mode (Direct or ShockBurst™)
13
1
RFDR_SB
RF data rate (1Mbps requires 16MHz crystal)
12:10
3
XO_F
Crystal frequency
9:8
2
RF_PWR
RF output power
7:1
7
RF_CH#
Frequency channel
0
1
RXEN
RX or TX operation
Table 8 Table of configuration words.
The configuration word is shifted in MSB first on positive CLK1 edges. New
configuration is enabled on the falling edge of CS.
NOTE.
On the falling edge of CS, the nRF2401A updates the number of bits actually shifted
in during the last configuration.
Ex:
If the nRF2401A is to be configured for 2 channel RX in ShockBurst™, a total of 120
bits must be shifted in during the first configuration after VDD is applied.
Once the wanted protocol, modus and RF channel are set, only one bit (RXEN) is
shifted in to switch between RX and TX.
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
Page 17 of 38
December 2004