USB97C102 datasheet(70/80 Pages) SMSC

70 / 80 page

SMSC DS – USB97C102

Page 70

Rev. 03/23/2000

USB PARAMETERS

The following tables and diagrams were obtained from the USB specification

USB DC PARAMETERS

0.0

0.2

0.4

0.6

0.8

1.0

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

2.4

2.6

2.8

3.0

3.2

Common Mode Input Voltage (volts)

FIGURE 9 - DIFFERENTIAL INPUT SENSITIVITY OVER ENTIRE COMMON MODE RANGE

Table 120 - DC Electrical Characteristics

PARAMETER

SYMBOL

CONDITIONS

(NOTE 1, 2)

MIN

TYP

MAX

UNIT

Supply Voltage:

Powered (Host or Hub) Port

VBUS

2.97

3.63

Supply Current:

Function

ICC

Note 4

100

Un-configured Function (in)

ICCINIT

Note 5

100

Suspend Device

ICCS

200

Leakage Current:

Hi-Z State Data Line Leakage

ILO

0 V < VIN < 3.3 V

-10

Input Levels:

Differential Input Sensitivity

VDI

|(D+) - (D-)|, and

FIGURE 9

0.2

Differential Common Mode

Range

VCM

Includes VDI range

0.8

2.5

Single Ended Receiver

Threshold

VSE

0.8

2.0

Output Levels:

Static Output Low

VOL

RL of 1.5 K$ to 3.6 V

0.3 (3)

Static Output High

VOH

RL of 15 K$ to GND

2.8

3.6 (3)

Capacitance

Transceiver Capacitance

CIN

Pin to GND

Terminals

Bus Pull-up Resistor on Root

Port

RPU

(1.5 K$ +/- 5%)

1.425

1.575

Bus Pull-down Resistor on

Downstream Port

RPD

(15 K$ +/- 5%)

14.25

15.75

Note 1: All voltages are measured from the local ground potential, unless otherwise specified.

Note 2: All timing use a capacitive load (CL) to ground of 50pF, unless otherwise specified.

Note 3: This is relative to VUSBIN.

Note 4: This is dependent on block configuration set by software.

Note 5: When the internal ring oscillator and waiting for first setup packet.

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