Hi-Speed USB Host, Device or OTG PHY with ULPI Low Pin Interface
Datasheet
ULPI
Hi-Speed Peripheral, host controllers, On-the-
Go devices with 12 pin interface
(HS, FS, LS, preamble packet)
UTMI+ Level 3
Hi-Speed Peripheral, host controllers, On-
the-Go devices
(HS, FS, LS, preamble packet)
UTMI+ Level 2
Hi-Speed Peripheral, host controllers, On-
the-Go devices
(HS, FS, and LS but no preamble packet)
UTMI+ Level 1
Hi-Speed Peripheral, host controllers,
and On-the-Go devices
(HS and FS Only)
UTMI+ Level 0
Hi-Speed Peripherals Only
USB3300
USB3500
USB3450
USB3280
USB3250
Figure 1.2 ULPI Interface Features as Related to UTMI+
SMSC USB3300
9
DATASHEET
Revision 1.1 (01-24-13)