8.2.1 Device States

The ATWILC3000A has multiple device states based on the state of the IEEE 802.11 and Bluetooth subsystems.

• ON_WiFi_Transmit – Device actively transmits IEEE 802.11 signal
• ON_WiFi_Receive – Device actively receives IEEE 802.11 signal
• ON_BT_Transmit – Device actively transmits Bluetooth signal
• ON_BT_Receive – Device actively receives Bluetooth signal
• ON_Doze – Device is powered on but it does not actively transmit or receive data
• Power_Down – Device core supply is powered off (leakage)

The following table shows different device states and its power consumption. The device states can be switched using the following:

• CHIP_EN – Device pin (pin 27) enables or disables the DC/DC converter
• VDDIO – I/O supply voltage from external supply

In the ON states, VDDIO is on and CHIP_EN is high (at VDDIO voltage level). To switch between the ON states and Power_Down state, the CHIP_EN has to change between high and low (GND) voltage. When VDDIO is off and CHIP_EN is low, the chip is powered off with minimal leakage (see Restrictions for Power States).