SNLU354 November 2024 TUSB2E221
When VBUS is provided through the USB connector, the TUSB2E221QFNEVM does not require an external 5V supply. Make sure that 5V is not already being provided to the EVM through other sources by configuring the EVM headers as shown in Table 2-4.
Designator | Installed | Description |
---|---|---|
J3 | Yes | VBUS to J4 USB Port A connector |
J2 | Yes | 5V Rail and DC Jack to VBUS |
J10 | Yes | VBUS to J4 USB Port B connector |
J14 | Yes | 3.3V LDO to 3.3V |
J15 | Yes | 3.3V supply rail to 1.8V input |
J16 | Yes | 1.8V LDO output to 1.8V supply rail |
J17 | Yes | 1.8V supply rail to 1.8V IO |
After configuring the EVM, plug the USB host into the J4 USB connector using a Type-A to Type-B adapter. This method of providing power is useful while the TUSB2E221 is configured as a bus-powered device.