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1. Re: Regarding recommended series resistance of Capsense SPI interface.
toshifumiy_06 Sep 3, 2018 9:12 PM (in response to matsubara-y_1534086)>Q1)
I'm sorry. I could not understand the meaning of the question.
Is CapSense's question? Or is it an SPI question?
>Q2)
If you have not read this SCB Component datasheet yet, please read this datasheet.
http://japan.cypress.com/documentation/component-datasheets/psoc-4-serial-communication-block-scb
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2. Re: Regarding recommended series resistance of Capsense SPI interface.
matsubara-y_1534086 Sep 3, 2018 9:18 PM (in response to toshifumiy_06)1 of 1 people found this helpfulBelow is figure of capsense design guide(AN64846).
Cypress recommends 330 ohm for I2C series resistance value.
I would like to confirm recommended series resistance value when communication is SPI.
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3. Re: Regarding recommended series resistance of Capsense SPI interface.
toshifumiy_06 Sep 4, 2018 3:23 AM (in response to matsubara-y_1534086)Yes, it is recommended to connect 330 ohm resistor even for SPI.
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4. Re: Regarding recommended series resistance of Capsense SPI interface.
matsubara-y_1534086 Sep 4, 2018 3:26 AM (in response to toshifumiy_06)Should series register be added to all SPI interface(miso, mosi, sclk, ss)?
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5. Re: Regarding recommended series resistance of Capsense SPI interface.
toshifumiy_06 Sep 4, 2018 3:34 AM (in response to matsubara-y_1534086)Yes, you are right.