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STUSB1600 数据表(PDF) 15 Page - STMicroelectronics

部件名 STUSB1600
功能描述  Power hubs and docking stations
PDF  69 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STUSB1600 数据表(HTML) 15 Page - STMicroelectronics

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STUSB1600
Features description
69
3.2.3
VBUS power path assertion
The STUSB1600 can control the assertion of the VBUS power path on the USB Type-C port,
directly or indirectly, through the VBUS_EN_SRC and VBUS_EN_SNK pins according to the
system power role.
The tables below summarize the configurations and the conditions that determine the
electrical value of the VBUS_EN_SRC and VBUS_EN_SNK pins during system operation.
As specified in the USB Type-C standard specification, the attached state “Attached.SRC” is
reached only if the voltage on the VBUS receptacle side is at vSafe0V condition when a
connection is detected.
Table 7. Conditions for VBUS power path assertion in source power role
Pin
Electrical
value
Operation conditions
Comment
Type-C attached
state
VDD pin
monitoring
VBUS_SENSE pin
monitoring
VBUS_EN_SRC
0
Attached.SRC
or
UnorientedDebug
Accessory.SRC
or
OrientedDebug
Accessory.SRC
VDD > UVLO if
VDD_UVLO
enabled
and/or
VDD < OVLO if
VDD_OVLO
enabled
VBUS is within valid
voltage range if
VBUS _VALID_RANGE
enabled
or
VBUS > UVLO if
VBUS _VALID_RANGE
disabled
The signal is
asserted
only if all the
valid
operation
conditions
are met
HiZ
Any other state
VDD < UVLO if
VDD_UVLO
enabled
and/or
VDD > OVLO if
VDD_OVLO
enabled
VBUS is out of valid
voltage range if
VBUS _VALID_RANGE
enabled
or
VBUS < UVLO if
VBUS _VALID_RANGE
disabled
The signal is
de-asserted
when at
least one
non valid
operation
condition is
met



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