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CC3135MOD: CC3135 Frequency band change

Part Number: CC3135MOD
Other Parts Discussed in Thread: CC3135

Query 1: How to change between 5GHz and 2.4GHz in CC3135MOD. how to change the frequncy band. From Host, I believe the WiFi functionality be done via SPI communication. Similarly Can I use Bluetooth functionality via the same SPI channel or do I need UART in CC3135MOD

Query 2: I have referred the reference schematics of this module from TI website. It seems the Feed pin and Antenna GND pin are shorted together in the schematics. Is that correct.

  • Query 1: You can enable/disable the 5G band through Unifalsh (in the System Setting->Device->Radio Settings) and through the sl_WlanSet(SL_WLAN_GENERAL_PARAM_OPT_ENABLE_5G). 2.4G is always enabled.

    You can select which channels to scan using SL_WLAN_GENERAL_PARAM_OPT_SCAN_PARAMS and SL_WLAN_GENERAL_PARAM_OPT_SCAN_PARAMS_5G.

    You should be able to use SPI for the CC3135 and other slave (e.g BT device) but it can impact the maximum bandwidth (assuming you are using the chip select correctly on your host).

    Br,

    Kobi

  • ILEKTRON, 

    In response to Query 2: Yes, they are shorted together. The antenna used on our reference design is the M830520. Please refer its datasheet for layout guidelines. 

    BR,

    Seong

  • Hi Kobi,

    Thanks for the response.

    So you mean that , through software command we can change the frequency band of the WiFi module. No configuration on HW required for this selection of frequency channel.

    Regarding Bluetooth functionality, I believe the CC3135MOD itself has Bluetooth in it. I am not going to add additional IC for Bluetooth as you mentioned.

    So my query was how to configure the Bluetooth within the CC3135MOD. Is it via SPI or UART interface of CC3135MOD.

  • Hi,

    CC3135 device is only Wifi 2.4 + 5GHz. It does not have integrated Bluetooth. If you need Wifi + Bluetooth combo, you should look to WiLink devicesBut  WiLink devices better fits with processors which are able to run Linux (not a MCUs like a MSP430, Cortex-M, etc.).

    If you want to use Wifi with CC3135 and bluetooth as well, you need to use additional chip (MCU) with Bluetooth capability. TI have many BT capable chips at own portfolio.

    Jan