nRF2401 Nordic VLSI, nRF2401 Datasheet - Page 17

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

PRODUCT SPECIFICATION
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 nRF2401 updates the number of bits actually shifted in
during the last configuration.
Ex:
If the nRF2401 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 VLSI ASA
Revision: 1.0
143:120
119:112
111:104
103:64
63:24
23:18
12:10
9:8
7:1
17
16
15
14
13
0
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Vestre Rosten 81, N-7075 Tiller, Norway
24
40
40
8
8
6
1
1
1
1
1
3
2
7
1
Table 8 Table of configuration words.
TEST
DATA2_W
DATA1_W
ADDR2
ADDR1
ADDR_W
CRC_L
CRC_EN
RX2_EN
CM
RFDR_SB
XO_F
RF_PWR
RF_CH#
RXEN
Page 17 of 37
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
Enable on-chip CRC generation/checking.
Enable two channel receive mode
Communication mode (Direct or ShockBurst™)
RF data rate (1Mbps requires 16MHz crystal)
Crystal frequency
RF output power
Frequency channel
RX or TX operation
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Phone [phone]
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Fax [phone]
March 2003