4–1

4 Application

4.1

Examples

Figure 4–1 illustrates the Port-3 pins that are assigned to drive the four example LEDs. For the connection example

shown, P3[7:4] can sink up to 12 mA (open-drain output). Figure 4–2 illustrates the partial connection bus power

mode. Figure 4–3 shows the USB upstream connection, and Figure 4–4 illustrates the downstream connection (only

one port shown).

TUSB3210

P3.2

P3.3

P3.4

P3.5

VCC

Figure 4–1. Example LED Connection

C3

R1

R2

R3

R4

R5

VCC

VCC

EPROM

VCC

VCC

VDDOUT

VREN

SUSP

C4

C5

X1

X2

SCL

SDA

TUSB3210

C2

VR

TPS76333

C1

5 V

Figure 4–2. Partial Connection Bus Power Mode