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USB5742 Datasheet(PDF) 16 Page - Microchip Technology

No. de pieza USB5742
Descripción Electrónicos  2-Port SS/HS USB Controller Hub
PDF  46 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB5742 Datasheet(HTML) 16 Page - Microchip Technology

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USB5742
DS00002016B-page 16
 2015-2016 Microchip Technology Inc.
3.4.2
PORT DISABLE CONFIGURATION (PRT_DIS_P[2:1] / PRT_DIS_M[2:1])
The PRT_DIS_P[2:1] and PRT_DIS_M[2:1] configuration straps are used in conjunction to disable the related port (2-1).
For PRT_DIS_Px (where x is the corresponding port 2-1):
0
= Port x D+ Enabled
1
= Port x D+ Disabled
For PRT_DIS_Mx (where x is the corresponding port 2-1):
0
= Port x D- Enabled
1
= Port x D- Disabled
3.4.3
NON-REMOVABLE PORT CONFIGURATION (CFG_NON_REM)
The CFG_NON_REM configuration strap is used to configure the non-removable port settings of the device to one of
three settings. These modes are selected by the configuration of an external resistor on the CFG_NON_REM pin. The
resistor options are a 200 kΩ pull-down, 200 kΩ pull-up, and 10 kΩ pull-down, as shown in Table 3-11.
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 three
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, and 10 kΩ pull-down, as shown in Table 3-12.
Note:
Both PRT_DIS_Px and PRT_DIS_Mx (where x is the corresponding port) must be tied to 3.3 V to disable
the associated downstream port. Disabling the USB 2.0 port will also disable the corresponding USB 3.1
Gen 1 port.
TABLE 3-11:
CFG_NON_REM RESISTOR ENCODING
CFG_NON_REM Resistor Value
Setting
200 kΩ Pull-Down
All ports removable
200 kΩ Pull-Up
Port 1 non-removable
10 kΩ Pull-Down
Port 1, 2 non-removable
TABLE 3-12:
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



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