USB3320C-EZK-TR Standard Microsystems (SMSC), USB3320C-EZK-TR Datasheet - Page 27

• Manufacturer Part Number: USB3320C-EZK-TR
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB3320C-EZK-TR

• Number Of Transceivers: 1
• Esd Protection: YeskV
• Operating Supply Voltage (typ): Not RequiredV
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (max): Not RequiredV
• Operating Supply Voltage (min): Not RequiredV
• Pin Count: 32
• Mounting: Surface Mount
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Lead Free Status / RoHS Status: Compliant

Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver
Datasheet
SMSC USB3320
5.4.1.2
ULPI Output Clock
When using ULPI Output Clock Mode, the USB3320 generates the 60MHz ULPI clock used by the
Link. The frequency of the reference clock is configured by REFSEL[2], REFSEL[1] and REFSEL[0]
as described in
to the Link.
In this mode, the REFCLK pin may be driven at the reference clock frequency. Alternatively, the
internal oscillator may be used with an external crystal or resonator as shown in
An example of ULPI Output Clock Mode is shown in
Figure 5.2 Configuring the USB332X for ULPI Input Clock Mode (60 MHz)
Link
Figure 5.3 Configuring the USB332X for ULPI Output Clock Mode
Link
Table
ULPI Clk Out
Reference Clk In
5.10. As shown in
ULPI Clk In
Source
Source
Clock
Clock
DATASHEET
Figure
27
VDDIO
CLKOUT
REFCLK
5.3, the CLKOUT pin sources the 60MHz ULPI clock
CLKOUT
REFCLK
Figure
~ ~
~ ~
8.1.
SMSC PHY
~ ~
~ ~
From PLL
SMSC PHY
To PLL
To PLL
Revision 1.0 (07-14-09)
Figure
5.4.