nRF24LE1 Nordic VLSI, nRF24LE1 Datasheet - Page 32

• Manufacturer Part Number: nRF24LE1
• Manufacturer: Nordic VLSI

nRF24LE1 Preliminary Product Specification
3.4.7.2
The flowchart in
standby-I mode.
Activate PRX mode by setting the rfce bit in the RFCON register high. The RF Transceiver enters RX
mode and starts searching for packets. If a packet is received and Auto Acknowledgement is enabled, the
RF Transceiver decides if the packet is new or a copy of a previously received packet. If the packet is new
Revision 1.1
Note: ShockBurst™ operation is outlined with a dashed square.
PRX operation
Figure 13.
Figure 13. PRX operations in Enhanced ShockBurst™
outlines how a RF Transceiver configured as a PRX behaves after entering
ShockBurst operation
Discard packet
Transmit ACK
No
TX Settling
TX mode
No
Acknowledgement
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received packet?
Start Primary RX
Standby-I mode
No_ACK set in
Is the received
packet a new
payload in TX
Is rfce =1?
RX Settling
RX mode
received?
enabled?
RX FIFO
Pending
packet?
Is Auto
Packet
FIFO?
Full?
Yes
Yes
Yes
No
No
No
Transmit ACK with
TX Settling
TX mode
Yes
Yes
payload
attached with the last
Yes
Was there payload
Put payload in RX
No
Put payload in RX
Yes
Set TX_DS IRQ
set RX_DR IRQ
No
set RX_DR IRQ
Is rfce =1?
FIFO and
FIFO and
ACK?
Yes
No
No
Yes