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USB3300-EZK-TR

Hi-Speed USB Host, Device or OTG PHY with ULPI Low Pin Interface

Microchip Technology 

Hi-Speed USB Host, Device or OTG PHY with ULPI Low Pin Interface

Datasheet

5.1

Piezoelectric Resonator for Internal Oscillator

The internal oscillator may be used with an external quartz crystal or ceramic resonator as described

in Section 6.3. See Table 5.8 for the recommended crystal specifications. See Table 5.9 for the ceramic

resonator part number for commercial temperature applications. At this time, the ceramic resonator

does not offer sufficient temperature stability to operate over the industrial temperature range.

Table 5.8 USB3300 Quartz Crystal Specifications

PARAMETER

Crystal Cut

Crystal Oscillation Mode

Crystal Calibration Mode

Frequency

Total Allowable PPM Budget

Shunt Capacitance

Load Capacitance

Drive Level

Equivalent Series Resistance

Operating Temperature Range

USB3300 XI Pin Capacitance

USB3300 XO Pin Capacitance

SYMBOL

Ffund

CO

CL

PW

R1

MIN

NOM

MAX

AT, typ

Fundamental Mode

Parallel Resonant Mode

-

24

-

-

-

±500

-

7 typ

-

-

0.5

-

Note 5.2

-

-

20 typ

-

-

-

3 typ

3 typ

-

-

30

Note 5.3

-

-

UNITS

MHz

PPM

pF

pF

mW

Ohm

oC

pF

pF

NOTES

Note 5.1

Note 5.4

Note 5.4

Note 5.1

Note 5.2

Note 5.3

Note 5.4

The required bit rate accuracy for Hi-Speed USB applications is ±500 ppm as provided in

the USB 2.0 Specification. This takes into account the effect of voltage, temperature, aging,

etc.

0oC for commercial applications, -40oC for industrial applications.

+70oC for commercial applications, +85oC for industrial applications.

This number includes the pad, the bond wire and the lead frame. Printed Circuit Board

(PCB) capacitance is not included in this value. The PCB capacitance value and the

capacitance value of the XO and XI pins are required to accurately calculate the value of

the two external load capacitors.

FREQUENCY

24 MHz

Table 5.9 USB3300 Ceramic Resonator Part Number

MURATA PART NUMBER

CSTCE24M0XK1***-R0

NOTES

Commercial Temp Only, Note 5.5

Note 5.5

This is a generic part number assigned by Murata. The oscillating frequency is affected by

stray capacitance on the Printed Circuit Board (PCB). Murata will assign the final part

number for each customer’s PCB after characterizing the customer’s PCB design.

Revision 1.1 (01-24-13)

20

DATASHEET

SMSC USB3300

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