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CC3130 Scheda tecnica(PDF) 53 Page - Texas Instruments |
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CC3130 Scheda tecnica(HTML) 53 Page - Texas Instruments |
53 / 75 page 10.1.2 Antenna Selection The CC3130 device is designed to also support antenna selection and is controlled from Image Creator. When enabled, there are 3 options possible options: • ANT 1: When selected, the GPIOs that are defined for antenna selection with set the RF path for antenna 1. • ANT 2: When selected, the GPIOs that are defined for antenna selection will set the RF path for antenna 2. • Autoselect: When selected, during a scan and prior to connecting to an AP, CC3130 device will determine the best RF path and select the appropriate antenna 5 6. The result is the saved as port of the profile. Figure 10-3 shows the implementation of a complete Bluetooth® low energy and WLAN coexistence network with WLAN and antenna selection. The Coex switch is controlled by a GPIO signal from the BLE device and a GPIO signal from the CC3130 device. The antenna switch is controlled by 2 GPIO lines from the CC3130 device. BLE CCxxxx WLAN CC3130 RF Coex SPDT RF SWITCH 2.4-GHz BPF CC_COEX_BLE_IN RF_BG CC_COEX_SW_OUT Coex IO Antenna Selection SPDT RF Switch Output GPIOs BLE / 2.4-GHz Wi-Fi Ant. BLE / 2.4-GHz Wi-Fi Ant. Figure 10-3. Antenna Selection Solution With Coexistence 5 When selecting Autoselect via the API, a reset is required in order for the CC3230x device to determine the best antenna for use. 6 Refer to the UniFlash CC3x20, CC3x35 SimpleLink™ Wi-Fi® and Internet-on-a chip™ Solution ImageCreator and Programming Tool User's Guide for more information. www.ti.com CC3130 SWRS227 – MARCH 2020 Copyright © 2020 Texas Instruments Incorporated Submit Document Feedback 53 |
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