USB5906CSLASHKD datasheet(31/64 Pages) MICROCHIP

31 / 64 page

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2016-2021 Microchip Technology Inc.

DS00002242E-page 32

USB5906

8.2

Battery Charging

The device can be configured by an OEM to have any of the downstream ports support battery charging. The hub’s role

in battery charging is to provide acknowledgment to a device’s query as to whether the hub system supports USB battery

charging. The hub silicon does not provide any current or power FETs or any additional circuitry to actually charge the

device. Those components must be provided externally by the OEM.

If the OEM provides an external supply capable of supplying current per the battery charging specification, the hub can

be configured to indicate the presence of such a supply from the device. This indication, via the

PRT_CTL[6:1] pins, is

on a per port basis. For example, the OEM can configure two ports to support battery charging through high current

power FETs and leave the other two ports as standard USB ports.

For additional information, refer to the Microchip USB5906 Battery Charging application note on the Microchip.com

USB5906 product page www.microchip.com/USB5906.

FIGURE 8-3:

UFP TYPE-C PORT WITH GENERIC TYPE-C CONTROLLER & INTERNAL MUX

(MODE 2)

FIGURE 8-4:

BATTERY CHARGING EXTERNAL POWER SUPPLY

UTC2000

UFP Mode

USB Type-C®

Internal Mux

Upstream Port

VBUS

SSTXA+

SSTXA-

SSRXA+

SSRXA-

SSTXB+

SSTXB-

SSRXB+

SSRXB-

D+

D-

CC1

CC2

CC1

CC2

CONNECTED#

PLUG_OR#

VBUS_DET

SSTXA+

SSTXA-

SSRXA+

SSRXA-

SSTXB+

SSTXB-

SSRXB+

SSRXB-

D+

D-

ATTACH_MUXA

ALT_MUX_EN

CC_POL

USB Type-C

3.3V

SOC

VBUS[n]

INT

SCL

SDA

Microchip

Hub

DC Power

USB5906C/KD 数据表(PDF) 31 Page - Microchip Technology

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