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USB Superspeed Peripherals

Anonymous
Not applicable

hi,

i wanted to interface sdxc sdcard to s0 port of fx3s

i got know that fx3 needs an external regulator to swich from 3.3v to 1.8 IO supply (so port)

and i have gone through cypress community regarding FX3S- Schematic of USB RAID ON  CHIP USB DONGLE

in which ,

they are using gpio control on regulator.

they are using GPIO_16(DQ12) and respective software code as

initparams.lowvoltage=cytrue;

initparams.voltageswgpio=VSEL_S0_GPIO;

My question is

1)is it compulsory to use specific gpio (GPIO_16)?

2)can i use any other gpio?

thank you...

if any user manual or document is there,please provide me.

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1 Solution
Moderator
Moderator

Geetha,

There is no dedicated GPIO for controlling the regulator.

You can use any GPIO for the same purpose and provide the same GPIO number in the initparams.voltageswgpio field.

Take care of initialization and configuration of that particular GPIO in the firmware.

Regards,

Sridhar

View solution in original post

1 Reply
Moderator
Moderator

Geetha,

There is no dedicated GPIO for controlling the regulator.

You can use any GPIO for the same purpose and provide the same GPIO number in the initparams.voltageswgpio field.

Take care of initialization and configuration of that particular GPIO in the firmware.

Regards,

Sridhar

View solution in original post