USB3300 SMSC Corporation, USB3300 Datasheet - Page 13

• Manufacturer Part Number: USB3300
• Description: Hi-Speed USB Host
• Manufacturer: SMSC Corporation

Hi-Speed USB Host, Device or OTG PHY with ULPI Low Pin Interface
Datasheet
SMSC USB3300
PIN
31
32
GND FLAG
REG_EN
RBIAS
NAME
Table 3.1 USB3300 Pin Definitions 32-Pin QFN Package (continued)
DIRECTION,
Pull-low
Analog,
Ground
CMOS,
CMOS
TYPE
I/O,
DATASHEET
ACTIVE
LEVEL
N/A
N/A
N/A
13
DESCRIPTION
On chip 1.8V regulator enable. Should be connected
directly to pin 30 to enable regulators. Connect to
ground to disable on chip VDDA1.8V and VDD1.8V
regulators. If regulators are disabled, external 1.8V
must be supplied to VDDA1.8 and VDD1.8 pins.
External 12KΩ +/- 1% bias resistor to ground.
Ground. The flag must be connected to the ground
plane with a via array under the exposed flag. This
is the main ground for the IC.
Revision 1.06 (07-19-06)