GPIO66 datasheet(28/60 Pages) MICROCHIP

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USB5806

DS00002236D-page 28

 2016-2018 Microchip Technology Inc.

8.0

FUNCTIONAL DESCRIPTIONS

This section details various USB5806 functions, including:

• USB Type-C Receptacle Support

• Battery Charging

• FlexConnect

• Resets

• Link Power Management (LPM)

• Remote Wakeup Indicator

• Port Control Interface

• Port Split

•

8.1

USB Type-C Receptacle Support

The USB5806 has built-in support for the USB Type-C receptacle.

8.1.1

EXTERNAL USB 3.1 GEN 1 MULTIPLEXER

C_ATTACH[0:3] pins are used to signal to the hub when a valid USB Type-C connection has been detected. This func-

tionality requires an external USB Type-C controller such as a Microchip UTC2000 to monitor the USB Type-C recep-

tacle for a valid attach. This signal is used to enable and disable clocking to the USB 3.1 Gen 1 PHY in order to reduce

power consumption when there is no USB Type-C attach.

The C_ATTACH[0:3] pins are active high inputs. A high signal enables clocking to the PHY to enable a USB 3.1 Gen 1

connection. A low signal disables the PHY.

A diagram of a USB Type-C Downstream Facing Port with a USB5806, Microchip UTC2000, and external multiplexer

is shown in Figure 8-1.

A diagram of a USB Type-C Upstream Facing Port with a USB5806, Microchip UTC2000, and external multiplexer is

shown in Figure 8-2.

FIGURE 8-1:

DFP TYPE-C PORT WITH MICROCHIP UTC2000 AND EXTERNAL MUX

UTC2000

DFP Mode

ENABLE

VBUS

SSTXA+

SSTXA-

SSRXA+

SSRXA-

SSTXB+

SSTXB-

SSRXB+

SSRXB-

D+

D-

CC1

CC2

OCS#

CC1

CC2

GENERIC

PORT PWR

CTLR

POWER

OCS

PPC_EN

MUX

SSTXA+

SSTXA-

SSRXA+

SSRXA-

SSTXB+

SSTXB-

SSRXB+

SSRXB-

SSTX+

SSTX-

SSRX+

SSRX-

PLUG_

ORIENTATION#

A/B

USB Type-C

External Mux

Downstream Port

SSTX+

SSTX-

SSRX+

SSRX-

D+

D-

PRT_CTLx

C_ATTACHx

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