MSPM0G5115: USB function

Wu Ping

Prodigy 20 points

Part Number: MSPM0G5115

Hello TI experts,

My project is used the USB microcontroller MSPM0G5115 QFN-28 package product.

Current use this MCU is for USB flashing via SPI as USB host-> use external 16MHz crystal oscillator.

Flash progess: USB memory->MSPM0G5115(SPI master)->Main MCU(CYT3DL SPI slave)

We want to let USB MCU in low poewr mode if the external USB memory is plug in.

because we don't want to use the external 16MHz crystal oscillator.

My consideration like below:

Firstly, configure the USB DP as GPIO input, internal pull down. switch off external clock, use internal LF CLK.

secondly, after USB plug in, MCU indentify the DP port voltage level change from Low to High.

Thirdly, after identify this change, let MCU go to Run mode, start USB Enumeration

Is it possible?

5 days ago

0 Wu Ping 5 days ago

Prodigy 20 points

We want to let USB MCU in low power mode if the external USB memory is plug in.

change to We want to let USB MCU in low power mode if the external USB memory is not plug in.

0 Diego Abad Sajamin 5 days ago in reply to Wu Ping

TI__Mastermind 27232 points

Hi Wu Ping,
The plan to use an interrupt from the GPIO to wake the device after a signal it's high should be possible.

Best Regards,

Diego Abad

0 Wu Ping 4 days ago in reply to Diego Abad Sajamin

Prodigy 20 points

Means current solution is OK ?

-> Configure DP port pint as GPIO input in sleep mode, after capture a high rising signal trigger a interrupt let MCU in Run mode?

+1 Diego Abad Sajamin 4 days ago in reply to Wu Ping

TI__Mastermind 27232 points

Hi Wu

That should be possible. Do keep in mind the D+ and D- pins are 3.3V, and that the USB functionality requires the Vbus33 to be connected to make it work.

Best Regards,

Diego Abad

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MSPM0G5115: USB function