USB4712 datasheet(12/43 Pages) MICROCHIP

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USB4712

DS00002774G-page 12

 2018-2021 Microchip Technology Inc.

Note 3-1

Configuration strap values are latched on Power-On Reset (POR) and the rising edge of RESET_N

(external chip reset). Configuration straps are identified by an underlined symbol name. Signals that

function as configuration straps must be augmented with an external resistor when connected to a

load. For additional information, refer to Section 3.3, "Configuration Straps and Programmable

Functions".

Test 1

TEST1

Test 1 pin.

This signal is used for test purposes and must always be

pulled-up to resistor (4.7 kOhm recommended).

Test 2

TEST2

Test 2 pin.

This signal is used for test purposes and may be pulled

up to 3.3V or pulled-down to ground via a resistor

(4.7kOhm recommended).

Test 3

TEST3

Test 3 pin.

This signal is used for test purposes and may be pulled

up to 3.3V or pulled-down to ground via a resistor

(4.7kOhm recommended).

No Connect

No Connect.

This pin should be left unconnected for proper operation.

Flex Command

FLEX_CMD

Flex Command (USB4712PF Only)

Controls state of FlexConnect.

0 = Not Flexed (Port 0 is UFP)

1 = Flexed (Port 1 is UFP)

Configuration Straps

Non-Removable

Port

Configuration

Strap

CFG_NON_REM

Non-Removable Ports Configuration Strap.

This configuration strap controls selection of the non-

removable port. See Note 3-1.

Battery Charging

Configuration

Strap

CFG_BC_EN

Battery Charging Configuration Strap.

This configuration strap controls the BC 1.2 enabling on

the downstream port. See Note 3-1.

Power/Ground

+3.3V I/O Power

Supply Input

VDDIO33

+3.3V I/O power supply input.

+3.3V Analog

Power Supply

Input

VDDPLLREF33

+3.3V master bias / PLL regulator supply input.

+1.2V Core Power

Supply Output

VDDCR12

+1.2V digital core power supply output.

Note:

This signal requires connection of a 1uF low-

ESR capacitor to ground.

Ground

VSS

Ground pins.

TABLE 3-2:

PIN DESCRIPTIONS (CONTINUED)

Name

Symbol

Buffer

Type

Description

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