UPD1002
DS00001760B-page 14 2014 Microchip Technology Inc.
2.2 Pin Descriptions
TABLE 2-2: PIN DESCRIPTIONS
Name Symbol
Buffer
Type
Description
Power Delivery
Power Deliv-
ery Cable ID
PD_ID AIO USB connector signal used to indicate a high-current
power delivery capable cable is inserted. This signal is to
be connected to the PD_ID pin located on the USB PD
Standard-B receptacle.
Power Deliv-
ery VBUS Data
PD_DATA AIO Modulated power delivery VBUS data. Requires in-line
isolation filter. Reference schematic available on request.
Power Deliv-
ery Detect
PD_DETECT IS
(PU)
This signal is to be connected to the PD DETECT pins
located on the USB PD Standard-A receptacle. This sig-
nal is pulled high via an internal pull-up resistor by
default. Assertion (low value) of PD_DETECT qualifies a
USB-PD plug detection event.
Power
Delivery
Enable
(Active High)
PD_EN O8 This active high signal is used to drive the enable pin of
the DC-to-DC solution direction directly. Alternatively, this
signal may be used to drive an N-channel MOSFET into
cuttoff and isolate the input power of the DC-to-DC solu-
tion.
Note: This function is only available in specific
device configurations.
Power
Delivery Good
PD_GOOD O8 This active high signal is asserted whenever a valid USB
power delivery contract has been established and the
device is operating as a sink in a configuration other than
VSafe5V-0A. A valid contract is defined as a PD contract
that matches one of the supported PD consumer/provider
profiles, as determined by the CFG_SEL0/CFG_SEL1
configuration. When there is no valid contract estab-
lished, this signal de-asserts.
Note: This signal will not be asserted, or become de-
asserted, if the VBUS voltage is not within the
desired range, as determined by the VMON
voltage monitoring (despite a contract being
established).
Note: This function is only available in specific
device configurations.
Miscellaneous
VBUS Voltage
Monitor
VMON AI Stepped down voltage representation of the VBUS volt-
age. This signal must be connected to a voltage divider
circuit as specified in Section 2.4, "Power Connection
Diagram," on page 22. Voltage must not exceed 5 V on
this signal. Refer to Section 3.4, "Voltage/Current Moni-
tors (VMON/IMON)," on page 29 for additional informa-
tion.
