USB2422 datasheet(15/47 Pages) MICROCHIP

Teilenummer	USB2422

Bauteilbeschribung	2-Port USB 2.0 Hi-Speed Hub Controller

PDF	47 Pages

Scroll/Zoom	100%

Hersteller	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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15 / 47 page

 2013 - 2015 Microchip Technology Inc.

DS00001726B-page 15

USB2422

3.2

Battery Charging Configuration

The battery charging option can be configured in one of two ways:

• When the hub is brought up in the default configuration with strapping options enabled, with the PRTP-

WR1/BC_EN1 pin configured (Port 1 only). See the following sections for details:

- Section 2.3, "Pin Descriptions (Grouped by Function)," on page 7

- Section 2.5, "Strap Pin Configuration," on page 10

• When the hub is initialized for configuration over SMBus.

3.2.1

BATTERY CHARGING ENABLED VIA SMBUS

0xD0 starting from bit 1 enables battery charging for each downstream port when asserted. Bit 1 represents port 1, and

bit 2 represents port 2. Each port that has battery charging enabled asserts the corresponding PRTPWR[2:1] pin.

USB2422 Datenblatt(PDF) 15 Page - Microchip Technology