ZHCSDT2C June 2015 – August 2018 TUSB321
PRODUCTION DATA.
The TUSB321 device has two functional modes. Table 3 lists these modes:
| MODES | GENERAL BEHAVIOR | PORT PIN | STATES(1) |
|---|---|---|---|
| Unattached | USB port unattached. ID, PORT operational. CC pins configure according to PORT pin. | UFP | Unattached.SNK |
| AttachWait.SNK | |||
| DRP | Toggle Unattached.SNK → Unattached.SRC | ||
| AttachedWait.SRC or AttachedWait.SNK | |||
| DFP | Unattached.SRC | ||
| AttachWait.SRC | |||
| Active | USB port attached. All GPIOs operational. | UFP | Attached.SNK |
| DRP | Attached.SNK | ||
| Attached.SRC | |||
| DFP | Attached.SRC |