ST STUSB03E Manuale utente

September 2006 Rev 1 1/11

UM0284

User manual

Getting started with the

STUSB03E USB full-speed transceiver demo board

Introduction

The STUSB03E USB full-speed transceiver is fully compliant with the Universal Serial Bus

Specification Revision 2.0. It provides a complete physical layer solution for any USB full

speed device. The STUSB03E connected with an USB controller is ideal for use in mobile

phones, digital cameras, printers, PDAs, etc.

The STUSB03E USB full-speed transceiver demo board is designed for demonstration and

evaluation purposes.

Assembled STUSB03E USB full-speed transceiver demo board PCB

www.st.com

Contents UM0284

2/11

Contents

1 Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 Power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2 Jumper assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3 Connector assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4 Test points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Appendix A STUSB03E demo board schematic diagram . . . . . . . . . . . . . . . . . . . 7

Appendix B STUSB03E demo board components layout . . . . . . . . . . . . . . . . . . . 8

Appendix C STUSB03E demo board bill of materials . . . . . . . . . . . . . . . . . . . . . . 9

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

UM0284 Hardware description

3/11

1 Hardware description

The demo board contains the STUSB03E USB Low/Full Speed transceiver, one power

supply connector, one Mini-B USB connector, a connector for interfacing with the controller

and all required discrete components (pull-up resistors, serial resistors and power supply

capacitors). The device can also be configured using a set of jumpers and the main signals

can be accessed through test points (see Section 1.4).

Figure 1. STUSB03E demo board block diagram

The 'USB controller header connector' makes it possible to connect a USB controller or any

digital control system. For more information concerning the connection of the USB

controller, refer to Table 4: CN2 pin assignments.

The jumpers also enable testing and measurement of the STUSB03E without a USB

controller.

1.1 Power requirements

The following supply voltages for the STUSB03E USB FS transceiver are recommended:

VIF = 1.6 - 3.6 (typical VIF value is 1.8V)

VBUS = 4.0 - 5.5V (typical VBUS value is 5V)

The demo board is designed for the same voltage ranges. The board does not contain a

voltage regulator.

Jumper J3 is used to choose whether to supply the VBUS pin from the USB connector or

from CN1.

When the VBUS voltage is above VBUSDET threshold, LED D1 switches ON. Connect Jumper

J9 to enable this function.

STUSB03E

USB FS

Transceiver

Power pins (VBUS, VIF)

USB

Controller

Header

Connector

Mini-B

connector

Jumpers

SPD, CON, SUS,

OE#, VBUS, RSEL

RPULL-UP

BUS

Hardware description UM0284

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1.2 Jumper assignments

Table 1 describes the jumper assignments of the demo board.

1.3 Connector assignments

Table 1. Demo board jumper assignments

Jumper Related

pin(s) Description

J1 D+

Connected: Connects a 1.5kΩ pull-up resistor to the D+ data line. Must be

connected in Full-Speed mode when RSEL = 0

Leave Open when in Low-speed mode.

J2 D-

Connected: Connects a 1.5kΩ pull-up resistor to the D- data line. Must be

connected in Low-speed mode.

Leave Open when in Full-speed mode.

J3 VBUS

1-2 Connected: Selects CN1 connector as 5V VBUS voltage source.

2-3 Connected: 5V VBUS voltage is supplied by CN3 USB connector

J4 SPD 1-2 Connected: STUSB03E transceiver in Low-speed mode(1)

2-3 Connected: STUSB03E transceiver in Full-speed mode

1. Leave this jumper open when controlling this function using an external USB controller connected to CN2.

CON,

RSEL,

SPD, VPU

1-2 Connected: VPU pin in high impedance; data line pull-up resistor

disconnected(1)

2-3 Connected: VPU pin outputs 3.3V ±10% (data line pull-up resistor

connected to internal LDO regulator output) when SPD = 1 and RSEL = 0 or

when SPD = 0

J6 SUS 1-2 Connected: STUSB03E transceiver active(1)

2-3 Connected: STUSB03E transceiver in Suspend mode

J7 OE# 1-2 Connected: STUSB03E transceiver in Transmit mode(1)

2-3 Connected: STUSB03E transceiver in Receive mode

J8 RSEL 1-2 Connected: Internal FS pull-up resistor disabled

2-3 Connected: Internal FS pull-up resistor enabled

J9 VBUSDET

Connected: Enables the VBUS voltage detection LED. LED switches ON

when voltage greater than the VBUSDET threshold is detected.

Table 2. Demo board connectors

Connector Descriptions

CN1 Power supply: VBUS, VIF and GND. Refer toTa bl e 3 for pin assignments.

CN2 Header connector for USB controller connection. Refer to Ta ble 4 for USB

controller connections.

CN3 USB mini-B connector.

UM0284 Hardware description

5/11

1.4 Test points

Table 3. CN1 pin assignments

Pin No. Description

1 VBUS – connect a 5V supply voltage when powering VBUS pin from CN1

2 VIF – Interface supply voltage (1.6V to 3.6V)

3Ground

Table 4. CN2 pin assignments

Pin No. Description Pin No. Description

BUSDET 6VM

2 SPD 7 RCV

3GND8 CON

4VP9 OE#

5GND10 SUS

Table 5. Test points

T.P. No. Description

1 D+ Data line

2 D- Data line

3 VM Signal

4 VP Signal

5 RCV Signal

BUSDET Signal

References UM0284

6/11

2 References

[1] STUSB03E Datasheet, rev. 0

[2] Universal Serial Bus Specification, rev. 2.0

[3] USB Engineering Change Notice to USB Specification Revision 2.0

UM0284 STUSB03E demo board schematic diagram

7/11

Appendix A STUSB03E demo board schematic diagram

Figure 2. Schematic diagram

15k

1.5k

4.7µ

1µ

C3 C4

CN1

VBUS

D-

D+

GND

SHD 6

SHD 7

SHD

1 2

D+U1

D-U1

OE#

VTRM

D+

D-

VBUS

VPU

VIF

VBD

SPD

RCV

CON

SUS

VBUS_CN1

VBUS_CN3

J1-1

J2-1

1 2

3 4

5 6

7 8

910

CN2

HEADER 5 X2

LED

R11

560

R12

Q1-B

Q1-CQ1-E

MMB T3 90 4

VIF

SPD

RCV

CON

GND

SUS

RSEL

OE# 9

D- 10

D+ 11

VTRM 12

VPU 13

VBUS 14

VIF 15

VBD 16

STUSB03E

RSEL

15k

Not assembled

STUSB03E demo board components layout UM0284

8/11

Appendix B STUSB03E demo board components layout

Figure 3. Demo board components layout

Resistors R5 and R6 and capacitors C3 and C4 can be added in order to simulate typical

load conditions (Host/Hub side pull-down resistors and capacitive load).

UM0284 STUSB03E demo board bill of materials

9/11

Appendix C STUSB03E demo board bill of materials

Table 6. Bill of materials

Part type Quantity Designator Footprint

STUSB03E 1 U1 QFN16(3x3)

4,7µF 1 C1 1210

1µF 1 C2 1210

20Ω±1% 2 R1, R2 3518

1,5kΩ±1% 2 R3, R4 3518

560Ω1 R11 3518

47Ω1 R12 3518

Jumper 2 J1, J2 Through Hole

Jumper 6 J3-J8 Through Hole

Header 1 2 P1-P2 Through Hole

KP-2012SRC-PRV 1 D1 0805

MMBT3904 1 Q1 SOT-23

Header 4 1 CN1 Through Hole

Header 5x2 1 CN2 Through Hole

MINI-B USB Receptacle 1 CN3 USB mini B, SMT

Revision history UM0284

10/11

Revision history

Table 7. Document revision history

Date Revision Changes

18-Sept-2006 1 Initial release.

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