100 nF

R

BOOST

Supply

+3.3V or +5 V

1uF

(op onal)

100 nF

Vcc

R

RXSEN1

R

RXSEN2

USB

Host or Hub

CON_D2P

CON_D2N

USB_D1P

USB_D1N

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RSTZ

BOOST

D2P

D2M

RX_SEN/ENA_HS

GND

DCP/

CDP

VCC

D1M

D1P

Ferrite Bead

100 @100MHz

Connect

D1P and D2P

Connect

D1M and D2M

75 k

+/-

10 k

-1%

Downstream VBUS needs to

be toggled to change charging

mode adver sement

Upstream VBUS (5V+/-10%)

indica ng Host/Hub State

Upstream VBUS Low -> DCP

Upstream VBUS High -> CDP

VBUS

TPS2024

OUT

VBUS Supply

+5 V

IN

SN74AHC1G86

VCC

EN

Y

22 k

μF

A

B

22 μF 0.1 μF

VBUS TOGGLE

CIRCUIT

+3.3V

5 k

+/-1%

TLV1701

V-

V+

Figure 9-1. TUSB217A : A Reference Schematic (Design Example with DCP/CDP dynamic switching).

Downstream VBUS needs to be toggled if upstream VBUS state changes for BC 1.2 controller to change

DCP/CDP advertisement.

TUSB217A

SLLSFK5 – JUNE 2021

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