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USB251XB 데이터시트(PDF) 18 Page - Microchip Technology

부품명 USB251XB
상세설명  USB 2.0 Hi-Speed Hub Controller
PDF  57 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB251XB 데이터시트(HTML) 18 Page - Microchip Technology

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USB251xB/xBi
DS00001692D-page 18
 2022 Microchip Technology Inc. and its subsidiaries
4.2
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 PRT-
PWR[x:1]/BC_EN[x:1] pins configured. See the following sections for details:
- Section 3.3, "Pin Descriptions (Grouped by Function)," on page 12
- Section 3.3.1.2, "Internal Pull-Down (IPD)," on page 15
• When the hub is initialized for configuration over I2C EEPROM or SMBus. Either of these interfaces can be used
to configure the battery charging option.
4.2.1
BATTERY CHARGING ENABLED VIA I2C EEPROM OR 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, bit
2 represents port 2, etc. Each port with battery charging enabled asserts the corresponding PRTPWR[x:1] pin.



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