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CC3135 Datasheet(PDF) 53 Page - Texas Instruments

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Part No. CC3135
Description  SimpleLink Wi-Fi, Dual-Band Network Processor, solution for MCU applications
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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CC3135 Datasheet(HTML) 53 Page - Texas Instruments

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CC3135
www.ti.com
SWAS037 – JANUARY 2019
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Product Folder Links: CC3135
Applications, Implementation, and Layout
Copyright © 2019, Texas Instruments Incorporated
7
Applications, Implementation, and Layout
NOTE
Information in the following Applications section is not part of the TI component specification,
and TI does not warrant its accuracy or completeness. TI's customers are responsible for
determining suitability of components for their purposes. Customers should validate and test
their design implementation to confirm system functionality.
7.1
Application Information
7.1.1
BLE/2.4 GHz Radio Coexistence
The CC3135 device is designed to support BLE/2.4 GHz 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 2.4 GHz band, therefore the
coexistence mechanism does not affect the 5 GHz band. The CC3135 device can operate normally on the
5 GHz band, while the Bluetooth® low energy works on the 2.4 GHz band without mutual interference.
The following coexistence modes can be configured by the user:
Off mode or intrinsic mode
No BLE/2.4 GHz radio coexistence, or no synchronization between WLAN and Bluetooth® low
energy—in case Bluetooth® low energy exists in this mode, collisions can randomly occur.
Time Division Multiplexing (TDM, Single Antenna)
2.4 GHz Wi-Fi band (see Figure 7-1)
In this mode, the two entities share the antenna through an RF switch using two GPIOs (one input
and one output from the WLAN perspective).
5 GHz Wi-Fi band (see Figure 7-2)
In this mode, the WLAN operates on the 5 GHz band and Bluetooth® low energy operates on the
2.4 GHz band. A 2.4- or 5 GHz diplexer is required for sharing the single antenna.
Time Division Multiplexing (TDM, Dual Antenna)
2.4 GHz Wi-Fi Band (see Figure 7-3)
In this mode, the two entities have separate antennas. No RF switch is required and only a single
GPIO (one input from the WLAN perspective).
5 GHz Wi-Fi band (see Figure 7-4)
In this mode, the WLAN operates on the 5 GHz band and Bluetooth® low energy operates on the
2.4 GHz band. No diplexer is required for the dual-antenna solution.


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