Hi-Speed USB Transceiver with 1.8V-3.3V ULPI Interface - 26MHz Reference Clock
Table 1 USB3317 Pin Description (continued)
Input,
CMOS,
RESETB
Input,
CMOS
Analog,
CMOS
Ground
FLAG
C3
N/A
N/A
When low, the part is suspended with all
of the I/O tri-stated. When high the
USB3317 will operate as a normal ULPI
device.
26MHz Reference Clock input.
22
B2
23
A2
24
A1
REFCLK
N/A
RBIAS
Rbias pin. This pin requires an 8.06kΩ
(±1%) resistor to ground, placed as close
as possible to the USB3317.
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.
N/A
GND
SMSC USB3317
7
Revision 1.3 (11-02-07)
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