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Wi-Fi Bluetooth for Linux Forum Discussions

divyeshmarne
Level 1
First reply posted First question asked Welcome!
Level 1

Hi Team,

We have integrated cyw43455 with IMX8MM processor in android 11 code base and it is working fine.

but as per the requirement we need to disable wifi for sometimes using reset pin. 

When I make

1. regon pin (reset pin) low - WIFI disable 

2. After that making regonreset pin high - WIFI should turn on (but it is not working) . - looks like power on sequence issue.

Could you please help here to disable wifi using reset pin? What changes need to be done here ?

 

thanks

Divyesh

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Zhengbao_Zhang
Moderator
Moderator First comment on KBA 10 questions asked 5 questions asked
Moderator

Hello:

 

Note: For both the WL_REG_ON and BT_REG_ON pins, there should be at least a 10 ms time delay between consecutive toggles
(where both signals have been driven low). This is to allow time for the CBUCK regulator to discharge. If this delay is not followed,
then there may be a VDDIO in-rush current on the order of 36 mA during the next PMU cold start.

and attach the power on timing here:

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