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USB 1.0 or 1.1 Specifications

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bharatsmile2007

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Hi All,

Can any one give me USB 1.0 or 1.1 Specifications?

Thanks
 

bharatsmile2007

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Thanks M!K...

Do you have any idea abt the Output Driver Current Specification for USB 1.1 ?
 

M!k

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The maximum currents are the same as in USB spec. 2.0:
low-power: 100mA
high-power: 500mA
Read about that in chapter 7.2.1 "Classes of Devices" and chapter 7.3.2 "Electrical Characteristics" of USB spec. 1.1
 

bharatsmile2007

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Thanks M!K...

Any idea abt the basic building block of USB Transmitter compliant to 1.1?

As any general purpose IO Transmitter has Pre-Driver and Driver Circuits...I mean to say USB Transmitter has any other blocks other than Pre-Driver and Driver?
 

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