topic Re: Reference schematics for connecting RST_N pin to host in Other NXP Products

Reference schematics for connecting RST_N pin to host

masahirokiniwa — Thu, 01 Nov 2018 12:10:31 GMT

Hi,

I'm considering to connect RST_N pin to host.

Could you give us the reference circuit for above use case?

In Fig4 of data sheet, RST_N is connected to GND by 1uF OPTIONAL capacitor.

Could you tell me the function of this capacitor and why you choose this value?

I think that I need to care the RST_N, if it is used for reducing noise or other effects.

Best regards,

M.Kiniwa

Re: Reference schematics for connecting RST_N pin to host

lisettelozano — Thu, 01 Nov 2018 19:16:50 GMT

Hello Masahiro,

Please provide the device part number that you are using so we can address it correctly.

Have a great day,

Paulina

Re: Reference schematics for connecting RST_N pin to host

masahirokiniwa — Fri, 02 Nov 2018 00:31:34 GMT

Hi Paulina-san,

Sorry, I use PTA3356.

Could you please confirm above requests?

Best regards,

M.Kiniwa

Re: Reference schematics for connecting RST_N pin to host

lisettelozano — Mon, 05 Nov 2018 15:39:41 GMT

Hi Masahiro,

I apologize for the delayed response. The capacitor on RST_N pin is a decoupling capacitor that helps to filter noise on this pin. We do not have any reference circuit besides the ones in the website in our application note AN11590 and user guide UM10837; however, you can connect RST_N pin to host, you should not have any inconveniences. Please check the characteristics of this pin on table 21 in the datasheet.

Have a great day,

Paulina