STUSB03E 데이터 시트보기 (PDF) - STMicroelectronics

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STUSB03E

USB Transceiver

STMicroelectronics 

Pin configuration

2 Pin configuration

Figure 2. Pin connections (Top View)

STUSB03E

Table 1. Pin description

Pln N° Symbol

1

SPD

2

RCV

3

VP

4

VM

5

CON

6

GND

7

SUS

8

RSEL

9

10, 11

12

OE#

D-, D+

VTRM

13

VPU

14

15

16

EXP

VBUS

VIF

VBUSDET

N.C.

I/O

Name and function

I

Speed selection input. A logic HIGH operates at edge rates for “fullspeed” operation.

A logic LOW operates edge rates for “lowspeed” operation. See also CON pin.

O Receive Data. Output for USB differential data. (see Table 2)

I/O

If OE# = H, VP = Receiver output (+)

If OE# = L, VP = Driver input (+) (see Table 2)

I/O

If OE# = H, VM = Receiver output (-)

If OE# = L, VM = Driver input (-) (see Table 2)

CONNECT (input). Connects the internal pull-up resistor to D+ if SPD and RSEL are

I logic high. Controls status of VPU pin if SPD or RSEL is logic low.

Ground reference

I Suspend (active-high). Turns off internal circuits to reduce supply current.

Full speed pull-up resistor selection input. If RSEL = 0 the internal pull-up resistor

I connected to D+ is disabled and an external resistor connected to VPU pin must be

used.

Output Enable (active-low). Enables transceiver data transmission onto the bus.

I

When not active, the transceiver is in the receive mode. (see Table 2)

I/O Differential data lines that conform to the USB v2.0 standard. (see Table 2)

O 3.3V Reference Supply Output. Requires a 1.0µF decoupling capacitor for stability.

Pull-up Supply Voltage Output. Used to connect 1.5K pull-up speed detect resistor

O when RSEL or SPD is logic low. If CON = 0, VPU is high impedance. If CON = 1, VPU

= 3.3V ±10% (see Table 4.).

I

USB Bus Supply Voltage (4V to 5.5V). Supplies power to the USB transceiver and

internal circuitry.

I

System Interface Supply Voltage (1.6V to 3.6V). Provides reference supply voltage for

system I/O interface signals.

O

VBUS indicator output. When VBUS > 4.0V, VBUSDET = High; when < 3.6V,

VBUSDET = Low (VIF referred).

Not connected.

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