USB3290 datasheet(16/43 Pages) SMSC

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

Datasheet

Revision 1.2 (10-27-06)

SMSC USB3290

DATASHEET

Note 6.5

VDD3.3 = 3.0 to 3.6V; VSS = 0V; TA = -40oC to 85oC; unless otherwise specified.

6.1

Driver Characteristics of Full-Speed Drivers in High-Speed

Capable Transceivers

The USB3290 uses a differential output driver to drive the USB data signal onto the USB cable.

Figure 6.1 Full-Speed Driver VOH/IOH Characteristics for High-speed Capable Transceiveron page 17

shows the V/I characteristics for a full-speed driver which is part of a high-speed capable transceiver.

The normalized V/I curve for the driver must fall entirely inside the shaded region. The V/I region is

bounded by the minimum driver impedance above (40.5 Ohm) and the maximum driver impedance

below (49.5 Ohm). The output voltage must be within 10mV of ground when no current is flowing in

or out of the pin.

Table 6.5 Dynamic Characteristics: Digital UTMI Pins (

Note 6.5)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

UTMI Timing

DATA[7:0]

TPD

Output Delay. Measured

from PHY output to the

rising edge of CLKOUT

RXVALID

RXACTIVE

RXERROR

LINESTATE[1:0]

TXREADY

DATA[7:0]

TSU

Setup Time. Measured

from PHY input to the

rising edge of CLKOUT.

5ns

TXVALID

OPMODE[1:0]

XCVRSELECT

TERMSELECT

DATA[7:0]

Hold time. Measured from

the rising egde of

CLKOUT to the PHY input

signal edge.

0ns

TXVALID

OPMODE[1:0]

XCVRSELECT

TERMSELECT

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