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FUSB308B датащи(PDF) 11 Page - ON Semiconductor

номер детали FUSB308B
подробное описание детали  USB Type-C Port Controller with USB-PD
PDF  53 Pages
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производитель  ONSEMI [ON Semiconductor]
домашняя страница  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

FUSB308B датащи(HTML) 11 Page - ON Semiconductor

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FUSB308B
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11
Voltage Transitions
The FUSB308B has two source control ports: SRC and
SRC_HV. There are two ways to transition between SRC
and SRC_HV as seen in Figure 9 through Figure 12.
Figure 9. Transition to vSafe5V on Power Up
Power Up
Read
ALERT
Enable SRC path
SRC = High
FUSB30x
TCPM
Sourcing Disabled
PWRSTAT.SOURCE_VBUS=0b
PWRSTAT.SOURCE_HV=0b
SRC = Low
SRC_HV=Low
Prepare device to source vSafe5v
Write:
PWRCTRL.DIS_VALARM=1b
PWRCTRL.AUTO_DISCH=0b
Voltage Transition Complete
Set PWRSTAT.SOURCE_VBUS =1b
Set ALERT.I_PORT_PWR = 1b
Enable vSafe5v Source
Write COMMAND.SourceVbusDefaultVoltage
VBUS > vSafe5V(min)?
Y
No
Notify Policy Engine that voltage
transition is complete
Transition to vSafe5v Path on Power up
Sourcing vSafe5V
ALERT.I_PORT_PWR=1b?
Service other
ALERTS
No
Read ALERT
Read PWRSTAT
Yes
Enable Auto Discharge
PWRCTRL.AUTO_DISCH=1b



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