SLLSEN9F May 2015 – March 2022 TUSB320
PRODUCTION DATA
The TUSB320 device can be configured as a DFP only by pulling the PORT pin high through a resistance to VDD. In DFP mode, the TUSB320 device constantly presents Rps on both CC. In DFP mode, the TUSB320 device initially advertises default USB Type-C current. The Type-C current can be adjusted through I2C if the system needs to increase the amount advertised. The TUSB320 device adjusts the Rps to match the desired Type-C current advertisement. In GPIO mode, the TUSB320 device only advertises default Type-C current.
When configured as a DFP, the TUSB320 can operate with older USB Type-C 1.0 devices except for a USB Type-C 1.0 DRP device. The TUSB320 can not operate with a USB Type-C 1.0 DRP device. This limitation is a result of a backwards compatibility problem between USB Type-C 1.1 DFP and a USB Type-C 1.0 DRP.