USB 2.0 HSIC Hi-Speed 4-Port Hub Controller
Datasheet
4.3
Power Connection Diagrams
Figure 4.1 illustrates the power connections for the USB4604 with various power supply configurations.
Single Supply Application
VDD12
HSIC
3.3V Internal
Logic
1.2V
Core Logic
3.3V I/O
VBAT/+3.3V
Supply
3.3V Regulator
1.2V Regulator
VBAT
(IN)
(OUT)
(IN)
(OUT)
4.7uF
VDDA33 VDD33
USB4604
VSS
(3x)
(2x)
VDDCOREREG
VDDCR12
1.0uF
1.0uF
Dual Supply Application (3.3V & 1.8V)
VDD12
HSIC
3.3V Internal
Logic
1.2V
Core Logic
3.3V I/O
+3.3V
Supply
3.3V Regulator
1.2V Regulator
VBAT
(IN)
(OUT)
(IN)
(OUT)
4.7uF
VDDA33 VDD33
USB4604
VSS
(3x)
(2x)
VDDCOREREG
VDDCR12
1.0uF
+1.8V
Supply
1.0uF
4.7uF
Figure 4.1 Power Connections
Note: To achieve the lowest power possible, tie the VDD12 pin to VDD12CR.
Revision 1.0 (06-17-13)
24
SMSC USB4604
DATASHEET
SMSC [ SMSC CORPORATION ]
