UPD1002 datasheet(14/46 Pages) MICROCHIP

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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

(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

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

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

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.

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