USB84604 Datasheet, PDF (17/61 Pages) Microchip Technology – USB 2.0 HSIC Hi-Speed 4-Port Controller Hub

USB84604
TABLE 3-1: PIN DESCRIPTIONS (CONTINUED)
Num Pins
Name
Symbol
Buffer
Type
Description
1
Battery Power
Supply Input
VBAT
P
Battery power supply input. When VBAT is con-
nected directly to a +3.3 V supply from the sys-
tem, the internal +3.3 V regulator runs in dropout
and regulator power consumption is eliminated. A
4.7 µF (<1 Ω ESR) capacitor to ground is required
for regulator stability. The capacitor should be
placed as close as possible to the device. Refer to
Chapter 4.0 Power Connections on page 21 for
power connection information.
3
+3.3 V
Analog Power
Supply
VDDA33
P
+3.3 V analog power supply. A 1.0 µF (<1 Ω ESR)
capacitor to ground is required for regulator stabil-
ity. The capacitor should be placed as close as
possible to the device. Refer to Chapter 4.0
Power Connections on page 21 for power connec-
tion information.
2
+3.3 V Power
Supply
VDD33
P
+3.3 V power supply. These pins must be con-
nected to VDDA33. Refer to Chapter 4.0 Power
Connections on page 21 for power connection
information.
1
+1.8 - 3.3 V
VDDCOREREG
P
+1.8 - 3.3 V core power supply input to internal
Core Power
+1.2 V regulator. This pin may be connected to
Supply Input
VDD33 for single supply applications when VBAT
equals +3.3 V. Running in a dual supply configu-
ration with VDDCOREREG at a lower voltage,
such as +1.8 V, may reduce overall system power
consumption. In dual supply configurations, a 4.7
µF (<1 Ω ESR) capacitor to ground is required for
regulator stability. The capacitor should be placed
as close as possible to the device. Refer to
Chapter 4.0 Power Connections on page 21 for
power connection information.
3
+1.2 V Core
VDDCR12
Power Supply
P
+1.2 V core power supply. In single supply appli-
cations or dual supply applications where 1.2 V is
not used, a 1.0 µF (<1 Ω ESR) capacitor to
ground is required for regulator stability. The
capacitor should be placed as close as possible to
the device. Refer to Chapter 4.0 Power Connec-
tions on page 21 for power connection informa-
tion.
1
+1.2 V HSIC
Power
Supply Input
VDD12
P
+1.2 V HSIC power supply input. Refer to
Chapter 4.0 Power Connections on page 21 for
power connection information.
Exposed
Pad on
package bot-
tom
(Figure 2-1)
Ground
VSS
P
Common ground. This exposed pad must be con-
nected to the ground plane with a via array.
Note 1: When the device is configured to enable the HSIC upstream port, the USB Product ID (PID) will be 0x4604.
When the device is configured to enable the USB upstream port, the USB PID will be 0x4504.
 2014-2016 Microchip Technology Inc.
DS60001295C-page 17