ninja2
Well-known member
I need to be sure about USB Host vs Device power choice works on T3.6
After looking at the schematic and K66 datasheet I've figured out choosing Device connection D would input 5V power from the USB cable into the USB voltage regulator internal to T3.6 via VREG_IN0 pin, and this internal regulator outputs 3.3V at pin VREG_OUT (which is wired to teensy 3V3 rail). So I gather this is so I could power the T3.6 from an external "Device" providing 5V though the second USB port (USB1).
For the Host power option ("H") the TPDS014 datasheet indicates it is a current limiter and ESD protection chip that can provide 5V at up to 0.5A. It is fed from VIN or VUSB, so I assume this is used if I want the T3.6 to supply power over USB to another teensy (or whatever is on the other end of the USB). And I gather the T3.6 is referred to as the USB "Host" in this config (and other end as Slave) ?
Have I got all this correct?
After looking at the schematic and K66 datasheet I've figured out choosing Device connection D would input 5V power from the USB cable into the USB voltage regulator internal to T3.6 via VREG_IN0 pin, and this internal regulator outputs 3.3V at pin VREG_OUT (which is wired to teensy 3V3 rail). So I gather this is so I could power the T3.6 from an external "Device" providing 5V though the second USB port (USB1).
For the Host power option ("H") the TPDS014 datasheet indicates it is a current limiter and ESD protection chip that can provide 5V at up to 0.5A. It is fed from VIN or VUSB, so I assume this is used if I want the T3.6 to supply power over USB to another teensy (or whatever is on the other end of the USB). And I gather the T3.6 is referred to as the USB "Host" in this config (and other end as Slave) ?
Have I got all this correct?
Last edited:
