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USB7002-KDXV bảng dữ liệu(PDF) 17 Page - Microchip Technology

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USB7002-KDXV bảng dữ liệu(HTML) 17 Page - Microchip Technology

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DS00002670C-page 17
USB7002
3.3.3
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 3-3.
3.3.4
PF[31:4] CONFIGURATION (CFG_STRAP[2:1])
The USB7002 provides 28 programmable function pins (PF[31:4]). These pins can be configured to 4 predefined con-
figurations via the CFG_STRAP[2:1] pins. These configurations are selected via external resistors on the
CFG_STRAP[2:1] pins, as detailed in Table 3-4. Resistor values and combinations not detailed in Table 3-4 are reserved
and should not be used.
TABLE 3-3:
CFG_BC_EN RESISTOR ENCODING
CFG_BC_EN Resistor Value
Setting
200 kΩ Pull-Down
Battery charging not enable on any port
200 kΩ Pull-Up
BC1.2 DCP and CDP battery charging enabled on Port 1
10 kΩ Pull-Down
BC1.2 DCP and CDP battery charging enabled on Ports 1, 2
10 kΩ Pull-Up
BC1.2 DCP and CDP battery charging enabled on Ports 1, 2, 3
10 Ω Pull-Down
BC1.2 DCP and CDP battery charging enabled on Ports 1, 2, 3, 4
Note:
CFG_STRAP3 is not used and can be left unconnected.
TABLE 3-4:
CFG_STRAP[2:1] RESISTOR ENCODING
Mode
CFG_STRAP2
Resistor Value
CFG_STRAP1
Resistor Value
Configuration 1
200 kΩ Pull-Down
200 kΩ Pull-Down
Configuration 2
200 kΩ Pull-Down
200 kΩ Pull-Up
Configuration 3
200 kΩ Pull-Down
10 kΩ Pull-Down
Configuration 4
200 kΩ Pull-Down
10 kΩ Pull-Up



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