USB3290 datasheet(20/46 Pages) SMSC

部件名	USB3290

功能描述	Small Footprint Hi-Speed USB 2.0 Device PHY with UTMI Interface

PDF	46 Pages

Scroll/Zoom	100%

制造商	SMSC [SMSC Corporation]

网页	http://www.smsc.com

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20 / 46 page

Small Footprint Hi-Speed USB 2.0 Device PHY with UTMI Interface

Datasheet

Revision 1.5 (11-02-07)

SMSC USB3290

DATASHEET

The eye pattern in Figure 6.5 defines the receiver sensitivity requirements for a hub (signal applied at

test point TP2 of Figure 6.3) or a device without a captive cable (signal applied at test point TP3 of

Figure 6.3). The corresponding signal levels and timings are given in the table below. Timings are

given as a percentage of the unit interval (UI), which represents the nominal bit duration for a 480

Mbit/s transmission rate.

Figure 6.5 Eye Pattern for Receive Waveform and Eye Pattern Definition

VOLTAGE LEVEL (D+, D-)

TIME (% OF UNIT INTERVAL)

Level 1

575mV

N/A

Level 2

-575mV

N/A

Point 1

15% UI

Point 2

85% UI

Point 3

150mV

35% UI

Point 4

150mV

65% UI

Point 5

-150mV

35% UI

Point 6

-150mV

65% UI

Point 1

100%

Point 2

Level 2

Level 1

Point 3

Point 4

Point 5

Point 6

Differential

-400mV

Differential

400mV

Differential

0 Volt

ｓ

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