ZHCSDU0F May 2015 – March 2022 TUSB320
PRODUCTION DATA
The TUSB320 device can be configured as a downstream facing port (DFP), upstream facing port (UFP), or dualrole port (DRP) using the tri-level PORT pin. The PORT pin should be pulled high to VDD using a pullup resistance, low to GND or left as floated on the PCB to achieve the desired mode. This flexibility allows the TUSB320 device to be used in a variety of applications. The TUSB320 device samples the PORT pin after reset and maintains the desired mode until the TUSB320 device is reset again. Table 7-1 lists the supported features in each mode.
| PORT PIN | HIGH (DFP ONLY) | LOW (UFP ONLY) | NC (DRP) |
|---|---|---|---|
| SUPPORTED FEATURES | |||
| Port attach and detach | Yes | Yes | Yes |
| Cable orientation (through I2C) | Yes | Yes | Yes |
| Current advertisement | Yes | — | Yes (DFP) |
| Current detection | — | Yes | Yes (UFP) |
| Accessory modes (audio and debug) | Yes | — | Yes |
| Active cable detection | Yes | — | Yes (DFP) |
| I2C / GPIO | Yes | Yes | Yes |
| Legacy cables | Yes | Yes | Yes |
| VBUS detection | — | Yes | Yes (UFP) |