USB3250 datasheet(38/46 Pages) MICROCHIP

Part #	USB3250

Description	Hi-Speed USB Device Transceiver with UTMI Interface

PDF	46 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

Logo

38 / 46 page

USB3250

DS00002142A-page 38

 2013 - 2016 Microchip Technology Inc.

8.14

Application Diagram

The bypass capacitors shown Figure 8-9 for the voltage regulator are typical values. The actual values will be dictated

by the regulator used in the end application. Please refer to the layout application note for recommendations regarding

critical component placement.

FIGURE 8-8:

DEVICE ATTACH BEHAVIOR

TABLE 8-10:

ATTACH AND RESET TIMING VALUES

Timing Parameter

Description

Value

Vbus Valid.

0 (reference)

Maximum time from Vbus valid to when the device

must signal attach.

T0 + 100ms < T1

T2 (HS Reset T0)

Debounce interval. The device now enters the HS

Detection Handshake protocol.

T1 + 100ms < T2

Device Reset

Idle (FS 'J')

XCVRSELECT

DP/DM

TERMSELECT

SE0

time

HS Detection

Handshake

BUS

USB3250 Datasheet(PDF) 38 Page - Microchip Technology