topic Re: MQS example schematic in i.MX Processors

MQS example schematic

cbrake — Fri, 04 Mar 2016 19:30:59 GMT

Are there an example schematics for i.MX6UL MQS (Medium quality sound)? Is this really as simple as connecting the output directly to an audio amp?

Also, is there a linux driver available for MQS?

Thanks,
Cliff

Re: MQS example schematic

b36401 — Fri, 11 Mar 2016 03:22:56 GMT

No. We have no such schematic example.

You are supposed to create a schematic yourself.

Sorry for the inconvenience.

i.MX6UL processor have such interface: MQS_LEFT and MQS_RIGHT pins.

They are PWM encoded. So you can connect audio amplifier to them with a filter.

Have a great day,

Victor

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Re: MQS example schematic

Yuri — Fri, 11 Mar 2016 06:57:10 GMT

Hello,

The i.MX6UL MQS is used to generate medium quality audio via standard GPIO
and produces PWM signal, fixed in amplitude and frequence, but varying in
duty cycle. So additional RC filter is needed at output, this will produce
medium quality sound without an additional DAC.

Regards,

Yuri.