User guide

Redpine Signals, Inc. Proprietary and Confidential. Page 116
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Figure 24: Activities for Power Save Mode 1
DTIM interval
reached?
Yes
No
Module
wakes up
Module goes
to sleep
Sends request for
next sleep through
interrupt to Host
Host has
data to send?
Yes
No
Do normal
operations
Host reads
SPI_HOST_INTR
register
Interrupt for
sleep
request?
No
Yes
Mask interrupt and
Send data to module
for transmission
Allow module to sleep by
writing in INTR_CLEAR
register and then unmask
the interrupt