nRF2401 Nordic VLSI, nRF2401 Datasheet - Page 10

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

PRODUCT SPECIFICATION
MCU interface pins: CE, CLK1, DATA
Nordic VLSI ASA
Revision: 1.0
YES
1. When the application MCU has data to send, set CE high. This activates
2. The address of the receiving node (RX address) and payload data is
3. MCU sets CE low, this activates a nRF2401 ShockBurst™ transmission.
4. nRF2401 ShockBurst™:
(250 or 1000kbps)
Adding Preamble
Calculating CRC
and PAYLOAD
Loading ADDR
ShockBurst
ShockBurst
TX (CE=hi)?
RF2401 on-board data processing.
clocked into the nRF2401. The application protocol or MCU sets the speed
<1Mbps (ex: 10kbps).
completed?
nRF2401 in
uController
CE=Low?
nRF2401
nRF2401
nRF2401
Package
Sending
Sending
data
Figure 6 Flow Chart ShockBurst™ Transmit of nRF2401
-
YES
YES
TM
TM
Vestre Rosten 81, N-7075 Tiller, Norway
RF front end is powered up
RF package is completed (preamble added, CRC calculated)
Data is transmitted at high speed (250 kbps or 1 Mbps configured
by user).
nRF2401 return to stand-by when finished
NO
NO
NO
amble
Pre-
Data content of registers:
Input FIFO not Empty
ADDR
ADDR
ADDR
Page 10 of 37
Maximum 256 bits
PAYLOAD
PAYLOAD
-
PAYLOAD
Phone [phone]
CRC
CRC
-
Fax [phone]
March 2003