SC16IS740: Will level change of /CS reset frame?

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SC16IS740: Will level change of /CS reset frame?

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dtmr
Contributor I

Will a high-low transisiton of the /CS signal of the SC16IS740/SC16IS760 reset the SPI frame, so that the chip will regard the next bit as the first bit of an SPI transmission?

I'm asking because I have no MCU pin left to control the reset line. If my MCU reboots, can toggling /CS get me out of an interrupted transmission (for software re-initialization)?

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dtmr
Contributor I

Thanks.

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guoweisun
NXP TechSupport
NXP TechSupport

Hi

If CS signal is from low to high which mean SPI stop communication,SC16IS740 will wait for next effective command to do next operation which depend on the MCU code setting.

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