JAJSIK6C February 2020 – December 2024 CC3235MODAS , CC3235MODASF , CC3235MODS , CC3235MODSF
PRODUCTION DATA
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The CC3235MODx and CC3235MODAx devices are designed to support BLE/2.4GHz radio coexistence. Because WLAN is inherently more tolerant to time-domain disturbances, the coexistence mechanism gives priority to the Bluetooth® low energy entity over the WLAN. Bluetooth® low energy operates in the 2.4GHz band, therefore the coexistence mechanism does not affect the 5GHz band. The CC3235MODx andCC3235MODAx device can operate normally on the 5GHz band, while the Bluetooth® low energy works on the 2.4GHz band without mutual interference.
The following coexistence modes can be configured by the user:
In this mode, the WLAN can operate on either a 2.4 or 5GHz band and Bluetooth® low energy operates on the 2.4GHz band.
Figure 9-1 shows the dual antenna implementation of a complete Bluetooth® low energy and WLAN coexistence network with the WLAN operating on either a 2.4 or a 5GHz band. Note in this implementation a Coex switch is not required and only a single GPIO from the BLE device to the CC3235MOD device is needed. In addition, the CC3235MODx's antenna is external while the CC3235MODAx's antenna is integrated.