topic Re: SGTL5000 RESET in i.MX Processors

SGTL5000 RESET

敏周安井 — Thu, 25 Apr 2019 09:36:27 GMT

We have a custom board with i.MX6SX and a SGTL5000 chip. On that board we are running Linux built with Yocto and kernel . we have experienced an issue. we play sound on SGTL5000 and after The SGTL5000 registers have been reset.

What is the condition under which the SGTL5000 registers are reset?

Best regards,

Re: SGTL5000 RESET

igorpadykov — Fri, 26 Apr 2019 00:00:29 GMT

Hi 敏周安井

reset may be caused by power supply issues, so one can check hardware.

To narrow down issue, one can run sdk sgtl5000 bare metal test (zip can be found on link

SMP Enable in IMX6 )

for linux one can try third party bsps which support sgtl5000 (like BD sabrelite board)

linux-imx6/imx6qdl-sabrelite.dtsi at boundary-imx_4.9.x_8mq_ga-pass1-ath10k · boundarydevices/linux-imx6 · GitHub

Best regards
igor
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Re: SGTL5000 RESET

敏周安井 — Fri, 26 Apr 2019 01:11:28 GMT

Hi igor

Thank you for your message.

VDDIO and VDDA are used at 3.3v.
How many volts between VDDIO and GND get reset?
And
How many volts between VDDA and GND get reset?

Best regards,

Re: SGTL5000 RESET

igorpadykov — Fri, 26 Apr 2019 02:47:41 GMT

Hi 敏周安井

one can refer to p.9 Table 7. Dynamic Electrical Characteristics SGTL5000 datasheet

https://www.nxp.com/docs/en/data-sheet/SGTL5000.pdf

Best regards
igor

Re: SGTL5000 RESET

敏周安井 — Fri, 26 Apr 2019 03:41:18 GMT

Hi igor

I am saying that what is written in the data sheet is a power-up.

I want to know how many volts are reset at power down.

Best regards,

Re: SGTL5000 RESET

igorpadykov — Fri, 26 Apr 2019 06:13:55 GMT

>reset at power down

could you clarify what this means

Best regards,

Re: SGTL5000 RESET

敏周安井 — Fri, 26 Apr 2019 06:37:56 GMT

Hi igor

I created the material.

Do you see the materials and understand my question?

Best regards,

Re: SGTL5000 RESET

igorpadykov — Fri, 26 Apr 2019 07:48:54 GMT

Hi 敏周安井

thanks for the material. Regarding your question - voltage sags are allowed

in range defined for VDDA in Table 3. Recommended Operating Conditions

SGTL5000 datasheet.

Best regards
igor

Re: SGTL5000 RESET

敏周安井 — Fri, 26 Apr 2019 07:57:40 GMT

Hi igor

Thank you very much.

Best regards,