DS90UB941AS-Q1: the method for implementing IRQ through GPIO

Minwoo Song

Part Number: DS90UB941AS-Q1

Hi,

I wanna make the IRQ system using SER-941 and DES-948.

In SER-941, I already connects GPIO0 and GPIO1 to the IRQ input of HOST SoC.

and I received the IRQ of Slave IC (DES Side) w/ D_GPIO(18 pin) in DES-948.

at this situation,

- Can I connect the IRQ of Slave IC from DES-948 (D_GPIO input) to SER-941 (GPIO0 or GPIO1 output) ?

- If it could be done, How can I connect and what is the register related ?

Thanks.

0 Michael.Walker over 4 years ago

Hi,

"Can I connect the IRQ of Slave IC from DES-948 (D_GPIO input) to SER-941 (GPIO0 or GPIO1 output) ?"

Sorry, The D_GPIO's of the 948 are only mapped to the D_GPIO's of the 941 when the 948 and 941 are connected in dual mode.

Regards,

Michael W.

0 Minwoo Song over 4 years ago in reply to Michael.Walker

Hi Michael.Walker,

Thanks for your answer.

and here is one more question.

"Can I connect the IRQ of Slave IC from DES-948 (GPIO1 input / 8 pin) to SER-941 (GPIO0 or GPIO1 output / 14,15 pin) ?"

Regards.

0 Michael.Walker over 4 years ago in reply to Minwoo Song

Hi,

Yes, you can map the GPIO1 on the 948 as in input and map the GPIO1 of the 941 as an output, but you cannot map the GPIO1 to GPIO0.

Regards,

Michael W.

0 Minwoo Song over 4 years ago in reply to Michael.Walker

Hi, Michael W.

Thanks for your answer.

It will be great helpful for me.

Regards,

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