USB3319 Standard Microsystems Corporation, USB3319 Datasheet - Page 8

• Manufacturer Part Number: USB3319
• Description: Hi-speed USB Transceiver with 1.8V ULPI Interface - 13mhz Reference Clock
• Manufacturer: Standard Microsystems Corporation

Revision 1.3 (11-02-07)
BALL
FLAG
PIN/
A3
B3
B2
A2
A1
C3
20
21
22
23
24
RESETB
REFCLK
VDD1.8
RBIAS
NAME
GND
STP
Table 1 USB3319 Pin Description (continued)
PRODUCT PREVIEW
DIRECTION/
Hi-Speed USB Transceiver with 1.8V ULPI Interface - 13MHz Reference Clock
Analog,
CMOS,
Ground
CMOS
CMOS
CMOS
Power
TYPE
Input,
Input,
Input,
8
ACTIVE
LEVEL
High
Low
N/A
N/A
N/A
N/A
The Link asserts STP for one clock cycle
to stop the data stream currently on the
bus. If the Link is sending data to the
PHY, STP indicates the last byte of data
was on the bus in the previous cycle.
External 1.8V Supply input pin. This pad
needs to be bypassed with a 0.1uF
capacitor to ground, placed as close as
possible to the USB3319.
When low, the part is suspended with all
of the I/O tri-stated. When high the
USB3319 will operate as a normal ULPI
device.
13MHz Reference Clock input.
Bias Resistor pin. This pin requires an
8.06kΩ (±1%) resistor to ground, placed
as close as possible to the USB3319.
Ground.
QFN only: The flag should be connected
to the ground plane with a via array
under the exposed flag. This is the main
ground for the IC.
DESCRIPTION
SMSC USB3319