USB 2.0 HSIC Hi-Speed 4-Port Hub Controller
Datasheet
4.2.2
Dual Supply Configurations
4.2.2.1
VBAT + 1.8V
VBAT must be tied to the VBAT system supply. VDDCOREREG must be tied to the 1.8V system
supply. In this configuration, the 3.3V regulator and the 1.2V regulator will be active. For HSIC
operation, VDD12 must be tied to VDDCR12.
4.2.2.2
3.3V + 1.8V
VBAT must be tied to the 3.3V system supply. VDDCOREREG must be tied to the 1.8V system supply.
In this configuration the 3.3V regulator will operate in dropout mode and the 1.2V regulator will be
active. For HSIC operation, VDD12 must be tied to VDDCR12.
SMSC USB4604
23
Revision 1.0 (06-17-13)
DATASHEET
SMSC [ SMSC CORPORATION ]
