USB3370 datasheet(32/75 Pages) MICROCHIP

Part #	USB3370

Description	Enhanced Single Supply Hi-Speed USB ULPI Transceiver

PDF	75 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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32 / 75 page

USB3370

DS00001915B-page 32

 2012 - 2015 Microchip Technology Inc.

5.9.2

RESISTIVE CHARGER DETECTION

To support the detection and identification of different types of USB chargers the USB3370 provides integrated pull-up

resistors, RCD, on both DP and DM. These pull-up resistors along with the single ended receivers can be used to deter-

mine the type of USB charger attached. Reference information on implementing charger detection is provided in

Section 8.2.

Note:

The Resistive Charger Detection has been superseded by the Active Analog Charger Detection (USB-IF

Battery Charging 1.1) detailed above. It is recommended that new designs use the Active Analog Charger

Detection (USB-IF Battery Charging 1.1).

TABLE 5-8:

USB WEAK PULL-UP ENABLE

RESETB

DP Pullup Enable

DM Pullup Enable

ChargerPullupEnableDP

ChargerPullupEnableDM

Note:

ChargerPullupEnableDP

and ChargerPullupEnableDM are enabled in the USB IO & Power Management

USB3370 Datasheet(PDF) 32 Page - Microchip Technology