USB3450 datasheet(30/40 Pages) SMSC

Part #	USB3450

Description	HI-SPEED USB HOST OR DEVICE PHY WITH UTMIINTERFACE

PDF	40 Pages

Scroll/Zoom	100%

Manufacturer	SMSC [SMSC Corporation]

Direct Link	http://www.smsc.com

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30 / 40 page

Hi-Speed USB Host or Device PHY With UTMI+ Interface

Datasheet

Revision 0.1 (05-11-05)

SMSC USB3450

DATASHEET

Figure 7.2 Suspend Timing Behavior (HS Mode)

Table 7.5 Suspend Timing Values (HS Mode)

TIMING

PARAMETER

DESCRIPTION

VALUE

HS Reset T0

End of last bus activity, signaling either a reset

or a SUSPEND.

0 (reference)

The time at which the device must place itself

in FS mode after bus activity stops.

HS Reset T0 + 3. 0ms < T1 < HS Reset T0

+ 3.125ms

Link samples LINESTATE. If LINESTATE = 'J',

then the initial SE0 on the bus (T0 - T1) had

been due to a Suspend state and the Link

remains in HS mode.

T1 + 100 µs < T2 <

T1 + 875µs

The earliest time where a device can issue

Resume signaling.

HS Reset T0 + 5ms

The latest time that a device must actually be

suspended, drawing no more than the

suspend current from the bus.

HS Reset T0 + 10ms

USB3450 Datasheet(PDF) 30 Page - SMSC Corporation