NRF2401 Datasheet, PDF (10/37 Pages) List of Unclassifed Manufacturers – Single chip 2.4 GHz Transceiver

PRODUCT SPECIFICATION
Q5) 6LQJOH &KLS  *+] 5DGLR 7UDQVFHLYHU
nRF2401 in ^NO
ShockBurst^TM
TX (CE=hi)?
YES
uController
Loading ADDR
and PAYLOAD
data
nRF2401
Calculating CRC
Data content of registers:
ADDR
PAYLOAD
Maximum 256 bits
ADDR
PAYLOAD
CRC
NO
CE=Low?
YES
nRF2401
Adding Preamble
Pre-
amble
ADDR
PAYLOAD
CRC
nRF2401
Sending
ShockBurst^TM
Package
(250 or 1000kbps)
YES
NO
Sending
completed?
Input FIFO not Empty
Figure 6 Flow Chart ShockBurst™ Transmit of nRF2401
Q5) 6KRFN%XUVWΠ7UDQVPLW
MCU interface pins: CE, CLK1, DATA
1. When the application MCU has data to send, set CE high. This activates
RF2401 on-board data processing.
2. The address of the receiving node (RX address) and payload data is
clocked into the nRF2401. The application protocol or MCU sets the speed
<1Mbps (ex: 10kbps).
3. MCU sets CE low, this activates a nRF2401 ShockBurst™ transmission.
4. nRF2401 ShockBurst™:
• 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
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
Page 10 of 37
March 2003