TW200609801A - Embedded oscillator for low-speed USB device - Google Patents

Embedded oscillator for low-speed USB device

Info

Publication number
TW200609801A
TW200609801A TW093126573A TW93126573A TW200609801A TW 200609801 A TW200609801 A TW 200609801A TW 093126573 A TW093126573 A TW 093126573A TW 93126573 A TW93126573 A TW 93126573A TW 200609801 A TW200609801 A TW 200609801A
Authority
TW
Taiwan
Prior art keywords
oscillator
signals
usb interface
signal generator
low
Prior art date
Application number
TW093126573A
Other languages
Chinese (zh)
Other versions
TWI250442B (en
Inventor
Ming-Te Cheng
Original Assignee
Tenx Technology Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tenx Technology Inc filed Critical Tenx Technology Inc
Priority to TW93126573A priority Critical patent/TWI250442B/en
Application granted granted Critical
Publication of TWI250442B publication Critical patent/TWI250442B/en
Publication of TW200609801A publication Critical patent/TW200609801A/en

Links

Abstract

The present invention discloses an embedded oscillator to be used in a USB interface controller or other controller connected with the USB interface. The invented oscillator circuit comprises: an oscillator signal generator to generate oscillator signals in particular frequency; a counter to receive synchronization signals from the USB interface and oscillator from said oscillator signal generator and to calculate a time unit according to said synchronization signals and number of said oscillator signal generated within a particular cycle; an oscillator signal adjustment circuit to adjust said oscillator signals according to said time unit; and a frequency signal generator to generate frequency signals according to said adjusted oscillator signals.
TW93126573A 2004-09-02 2004-09-02 Embedded oscillator for USB device and method for generating frequency signals thereof TWI250442B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW93126573A TWI250442B (en) 2004-09-02 2004-09-02 Embedded oscillator for USB device and method for generating frequency signals thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW93126573A TWI250442B (en) 2004-09-02 2004-09-02 Embedded oscillator for USB device and method for generating frequency signals thereof

Publications (2)

Publication Number Publication Date
TWI250442B TWI250442B (en) 2006-03-01
TW200609801A true TW200609801A (en) 2006-03-16

Family

ID=37433034

Family Applications (1)

Application Number Title Priority Date Filing Date
TW93126573A TWI250442B (en) 2004-09-02 2004-09-02 Embedded oscillator for USB device and method for generating frequency signals thereof

Country Status (1)

Country Link
TW (1) TWI250442B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7840733B2 (en) * 2008-07-03 2010-11-23 Intel Corporation Power optimized dynamic port association
TWI508457B (en) * 2009-06-05 2015-11-11 Elan Microelectronics Corp Methods and circuits for correcting the frequency of USB devices
TWI410806B (en) 2009-10-16 2013-10-01 Elan Microelectronics Corp A method and a circuit for correcting the frequency of the USB device, and a method of identifying whether or not the input packet is a tag packet

Also Published As

Publication number Publication date
TWI250442B (en) 2006-03-01

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees