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USB5734 bảng dữ liệu(PDF) 19 Page - Microchip Technology

tên linh kiện USB5734
Giải thích chi tiết về linh kiện  4-Port SS/HS USB Controller Hub
PDF  61 Pages
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 2015-2016 Microchip Technology Inc.
DS00001854D-page 19
USB5734
3.4.4
BATTERY CHARGING CONFIGURATION (CFG_BC_EN)
The CFG_BC_EN configuration strap is used to configure the battery charging port settings of the device to one of five
settings. These modes are selected by the configuration of an external resistor on the CFG_BC_EN pin. The resistor
options are a 200 kΩ pull-down, 200 kΩ pull-up, 10 kΩ pull-down, 10 kΩ pull-up, and 10 Ω pull-down, as shown in
Table 3-14.
3.4.5
DEVICE MODE / PROG_FUNC[7:1] CONFIGURATION (CFG_STRAP)
The CFG_STRAP is used to configure the programmable function pins (PROG_FUNC[7:1]) into one of six modes.
These modes are selected by the configuration of an external resistor on the CFG_STRAP pin. The resistor options are
a 200 kΩ pull-down, 200 kΩ pull-up, 10 kΩ pull-down, 10 kΩ pull-up, 10 Ω pull-down, and 10 Ω pull-up, as shown in
Table 3-15. For details on each device mode, including pin assignments, refer to the following subsections.
TABLE 3-14:
CFG_BC_EN RESISTOR ENCODING
CFG_BC_EN Resistor Value
Setting
200 kΩ Pull-Down
No battery charging
200 kΩ Pull-Up
Port 1 battery charging
10 kΩ Pull-Down
Port 1, 2 battery charging
10 kΩ Pull-Up
Port 1, 2, 3, battery charging
10 Ω Pull-Down
Port 1, 2, 3, 4 battery charging
TABLE 3-15:
CFG_STRAP RESISTOR ENCODING
CFG_STRAP Resistor Value
Mode
200 kΩ Pull-Down
Configuration 1 - Mixed Mode
200 kΩ Pull-Up
Configuration 2 - FlexConnect Mode
10 kΩ Pull-Down
Configuration 3 - Speed Indicator Mode
10 kΩ Pull-Up
Configuration 4 - GPIO Mode (Reserved)
10 Ω Pull-Down
Configuration 5 - Battery Charging / Power Delivery Indicator Mode
10 Ω Pull-Up
Configuration 6 - Full UART Mode



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