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USB2422 Fiches technique(PDF) 15 Page - Microchip Technology

No de pièce USB2422
Description  2-Port USB 2.0 Hi-Speed Hub Controller
PDF  47 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB2422 Fiches technique(HTML) 15 Page - Microchip Technology

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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
Register memory map location 0xD0 is allocated for battery charging support. The Battery Charging register at location
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.



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