Airoc™ Cyw43012 Wi-Fi & Bluetooth® Combo Chip Power-Related Hardware Signals - Infineon AIROC CYW43012 Manual

Low-power system design with AIROC™ Wi-Fi & Bluetooth® combo
chip and PSoC™ 6 MCU
Low-power overview
2.3 AIROC™ CYW43012 Wi-Fi & Bluetooth® combo chip power-related
hardware signals
AIROC™ CYW43012 Wi-Fi & Bluetooth® combo chip has six hardware signals that provide the power control
interface to the host (PSoC™ 6 MCU).
Table 3 Hardware signals in AIROC™ CYW43012 Wi-Fi & Bluetooth® combo chip
Signal Description
WL_REG_ON This signal is used by the PMU (with BT_REG_ON) to power-up the WLAN section. It is OR-
gated with the BT_REG_ON input to control internal AIROC™ CYW43012 Wi-Fi &
Bluetooth® combo chip regulators. When this pin is HIGH, the regulators are enabled, and
the WLAN section is out of reset. When this pin is LOW, the WLAN section is in reset. If
BT_REG_ON and WL_REG_ON are both LOW, the regulators are disabled.
BT_REG_ON This signal is used by the PMU (with WL_REG_ON) to decide whether to power down
internal AIROC™ CYW43012 Wi-Fi & Bluetooth® combo chip regulators. When this pin is
HIGH, the regulators are enabled, and the Bluetooth® section is out of reset. When this
pin is LOW, the Bluetooth® section is in reset. If BT_REG_ON and WL_REG_ON are LOW,
the regulators will be disabled.
BT_DEV_WAKE Bluetooth® device wakeup: Signal from the host (PSoC™ 6 MCU) to AIROC™ CYW43012 Wi-
Fi & Bluetooth® combo chip indicating that the host requires attention like sending data
to the Bluetooth® controller.
•
•
The polarity of this signal is software-configurable and can be asserted as HIGH or LOW.
Default is asserted HIGH.
BT_HOST_WAKE Host wakeup signal from the AIROC™ CYW43012 Wi-Fi & Bluetooth® combo chip
Bluetooth® controller to the host indicating that the AIROC™ CYW43012 Wi-Fi &
Bluetooth® combo chip Bluetooth® controller has data for the host.
•
•
The polarity of this signal is software-configurable and can be asserted as HIGH or LOW.
Default is asserted HIGH.
WL_HOST_WAKE Host wakeup signal from the AIROC™ CYW43012 Wi-Fi & Bluetooth® combo chip WLAN
device to the host indicating that the AIROC™ CYW43012 Wi-Fi & Bluetooth® combo chip
WLAN device has data for the host to process. This signal is an active HIGH signal.
•
•
WL_DEV_WAKE WLAN device wakeup signal. This signal is not used in current designs and SDIO-based
wakeup is used to wakeup the WLAN device.
Application note
Asserted: The Bluetooth® device must wake up or remain awake.
Deasserted: The Bluetooth® device may sleep when all other sleep criteria are met.
Asserted: host device must wake up or remain awake.
Deasserted: host device may sleep when all other sleep criteria are met.
HIGH: host device must wake up or remain awake.
LOW: host device may sleep when sleep criteria are met.
7 002-27910 Rev. *C
2023-05-29