FUSB308BVMPX datasheet(12/53 Pages) ONSEMI

tên linh kiện	FUSB308BVMPX

Giải thích chi tiết về linh kiện	USB Type-C Port Controller with USB-PD

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FUSB308B

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Figure 10. Transition to High Voltage Sourcing using SRC_HV Controlled Path (FUSB308B)

Accepted High Voltage

Policy Engine requests for VBUS transition

to high voltage

Read

ALERT

ALERT.I_PORT_PWR=1b?

Enable High Voltage Path

SRC = High

SRC_HV = High

Monitor VALARMLCFG

Service other

ALERTS

FUSB308B

TCPM

Read ALERT

Read PWRSTAT

Write VALARMH/LCFG

Write PWRCTRL.DIS_VALARM=0b

Write PWRCTRL.AUTO_DISCH=1b

Sourcing vSafe5V

PWRSTAT.SOURCE_VBUS=1b

PWRSTAT.SOURCE_HV=0b

SRC = High

SRC_HV = Low

Yes

Prepare FUSB307/8 for HV Transition

Write:

PWRCTRL.DIS_VALARM=1b

PWRCTRL.AUTO_DISCH=0b

Set New VBUS Alarm thresholds

VALARMH_CFG =vSrcNew (Max)

VALARML_CFG = vSrcNew (Min)

Voltage Transition Complete

SRC = Low

Set PWRSTAT.SOURCE_HV =1b

Set PWRSTAT.SOURCE_VBUS=0b

Set ALERT.I_PORT_PWR = 1b

Write COMMAND.SourceVbusHighVoltage

VALARMLCFG trip?

Yes

Sourcing HV

Notify Policy Engine that voltage

transition is complete

Transition to HV using SRC_HV Path

VALARMLCFG used

detect when transition

finished

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