Power Mode Transition - Infineon AIROC CYW43012 Manual

Low-power system design with AIROC™ Wi-Fi & Bluetooth® combo
chip and PSoC™ 6 MCU
Low-power overview
2.4

Power mode transition

Figure 1 Simplified power mode transitions in "PSoC™ 6 MCU
Bluetooth® combo chip" design
Transition Description
1a PSoC™ OFF to reset transition
1b AIROC™ CYW43012 Wi-Fi &
Bluetooth® combo chip OFF to
reset transition
2 PSoC™ reset to Active
transition
3 PSoC™ Active to Sleep or Deep
Sleep transition
4 PSoC™ Sleep or Deep Sleep to
active transition
5 PSoC™ active to Hibernate
transition
6 PSoC™ transitions to reset
state
Application note
PSoC MCU
Off
11a
1a
Reset
6
2
Active
3
5 4
Sleep/Deep
Sleep
Hibernate
Trigger
Power supply applied to PSoC™ 6 MCU.
Power supply applied to AIROC™ CYW43012 Wi-Fi & Bluetooth®
combo chip.
Firmware (boot/startup) transitions from reset to Active mode.
Firmware (OS idle task) transitions from active to Sleep or
Deep Sleep mode.
Wakeup (interrupt) from Sleep/Deep Sleep; typical sources in a
AIROC™ CYW43012 Wi-Fi & Bluetooth® combo chip design:
WL_HOST_WAKE (Deep Sleep or Sleep)
•
BT_HOST_WAKE (Deep Sleep or Sleep)
•
SDIO and UART interrupt (Sleep)
•
Low-power timer interrupts
•
Firmware (enter hibernate) transitions from active to
Hibernate mode
Any reset event including hibernate wakeup, external reset,
etc.
8
CYW43012
Off
WL_REG_ON
1b
BT_REG_ON
Reset
7
SDIO (Wi-Fi)
WL_HOST_WAKE
Active
BT_DEV_WAKE
8 9
BT_HOST_WAKE
Deep Sleep
(DS0)
UART (BT)
LEGEND:
Power down events
Firmware action
Power mode transitions
n
a
+ AIROC™ CYW43012 Wi-Fi &
11b
10
Reset events
Peripheral interrupts/
Hardware events
002-27910 Rev. *C
2023-05-29