Wi-Fi&Bluetooth Module Series
AF20_Hardware_Design
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3.7. Coexistence UART
The following table shows the pin definition of AF20’s coexistence UART.
Table 11: Pin Definition of Coexistence UART
LTE/Wi-Fi & Bluetooth
coexistence signal
1.8 V power domain
QCOM private protocol,
and these pins cannot be
used on third-party
platforms.
LTE/Wi-Fi & Bluetooth
coexistence signal
AF20 module supports LTE/Wi-Fi coexistence and LTE/Bluetooth coexistence. The following figure shows
the coexistence interface connection between AF20 and AG35.
Figure 10: Coexistence UART Connection
3.8. 32KHZ_IN
The 32 kHz clock is used in low power modes such as IEEE power saving mode and sleep mode. It
serves as a timer to determine when to wake up AF20 module to receive signals in various power saving
schemes, and to maintain basic logic operations when in sleep mode.
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