si4330 Silicon Laboratories, si4330 Datasheet - Page 55

• Manufacturer Part Number: si4330
• Description: Si4330 Ism Receiver
• Manufacturer: Silicon Laboratories

Si4330
8.7. Low Duty Cycle Mode
The Low Duty Cycle Mode is available to automatically wake-up the receiver to check if a valid signal is available.
The basic operation of the low duty cycle mode is demonstrated in the figure below. If a valid preamble or sync
word is not detected the chip will return to sleep mode until the beginning of a new WUT period. If a valid preamble
and sync are detected the receiver on period will be extended for the low duty cycle mode duration (TLDC) to
receive all of the packet. The time of the TLDC is determined by the formula below:



2
(
R
D
)
32


TLDC
ldc
[
: 7
] 0
ms
32
.
768
Figure 23. Low Duty Cycle Mode
Preliminary Rev 0.2
55