Philips Switch ISP1520 User manual

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

Semiconductors

Rev. 04.00 — 11 May 2004 User manual

Document information

Info Content

Keywords

ISP1520, hub controller, USB, universal serial bus

Abstract

This document describes the ISP1520 hub demo board. It also contains

the related schematics, the PCB layout, and the Bill of Material

.

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 2 of 18

Revision history

Contact information

For additional information, please visit: http://www.semiconductors.philips.com/

For sales office addresses, please send an email to: [email protected]

Rev Date Description

4.0 May 11, 2004 Updated the schematic.

3.0 April 14, 2004 Updated the following:

• Section 2

• Section 4

• Section 5.5

• Section 6

1.1 Feb 2003 Updated Section 5.5 and Section 6.

1.0 Nov. 2002 First release.

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 3 of 18

This is a legal agreement between you (either an individual or an entity) and Philips Semiconductors. By accepting

this product, you indicate your agreement to the disclaimer specified as follows:

DISCLAIMER

PRODUCT IS DEEMED ACCEPTED BY RECIPIENT. THE PRODUCT IS PROVIDED “AS IS” WITHOUT

WARRANTY OF ANY KIND. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, PHILIPS

SEMICONDUCTORS FURTHER DISCLAIMS ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY

IMPLIED WARRANTIES OF MERCHANT ABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND

NONINFRINGEMENT. THE ENTIRE RISK ARISING OUT OF THE USE OR PERFORMANCE OF THE

PRODUCT AND DOCUMENTATION REMAINS WITH THE RECIPIENT. TO THE MAXIMUM EXTENT

PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL PHILIPS SEMICONDUCTORS OR ITS SUPPLIERS BE

LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, DIRECT, INDIRECT, SPECIAL, PUNITIVE, OR OTHER

DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS

PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS)

ARISING OUT OF THIS AGREEMENT OR THE USE OF OR INABILITY TO USE THE PRODUCT, EVEN IF

PHILIPS SEMICONDUCTORS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 4 of 18

Contents

1. Introduction...............................................................................................................................................................................5

2. ISP1520 Hub demo board Features......................................................................................................................................5

3. System Requirements...............................................................................................................................................................6

4. Power Supply Adapter Requirements..................................................................................................................................6

5. Hub demo board Description................................................................................................................................................6

5.1. ISP1520 64-Pin TQFP Package......................................................................................................................................6

5.2. GoodLink Indicator.........................................................................................................................................................7

5.3. Port Power Switch Transistors.....................................................................................................................................7

5.4. Overcurrent Circuit Detection....................................................................................................................................7

5.5. Power Supply....................................................................................................................................................................8

5.6. I

2

C-Bus Interface..............................................................................................................................................................9

6. Schematics................................................................................................................................................................................10

7. Installing the Board.................................................................................................................................................................17

8. Bill of Materials for the ISP1520 Hub demo board..........................................................................................................18

9. References................................................................................................................................................................................18

GoodLink and I

2

C-Bus are trademarks of Koninklijke Philips Electronics N.V. Microsoft is a registered trademark of

Microsoft Corp. The names of actual companies and products mentioned herein may be the trademarks of their

respective owners. All other names, products, and trademarks are the property of their respective owners.

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 5 of 18

1. Introduction

The ISP1520 is a Hi-Speed Universal Serial Bus (USB) hub IC, with four downstream facing ports.

The ISP1520 Hub demo board is designed to demonstrate the features and functionality of the

ISP1520. This version is targeted at low-cost designs. Nevertheless, it still contains a large

number of features and options to be evaluated.

This document describes the ISP1520 hub demo board. It also contains the related schematics,

the PCB layout, and the Bill of Material (BoM).

Figure 1-1: ISP1520 Hub demo board

2. ISP1520 Hub demo board Features

• Complies with Universal Serial Bus Specification Rev. 2.0

• Supports self-powered operation

• Configurable number of downstream facing ports (from two to four)

• Customizable Vendor ID, Product ID and Serial Number (by using an external EEPROM or

an external microcontroller)

• Individual power switching and individual overcurrent protection

• USB traffic indication (GoodLink

TM

LED) on the upstream facing port

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UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 6 of 18

3. System Requirements

This hub can be attached to a computer that has a USB or Hi-Speed USB host installed, and

running any of these operating systems:

• Windows

®

98

• Windows Me

• Windows 2000

• Windows XP

• MacOS

®

If this hub is plugged into a USB host controller, it will only work as a full-speed hub.

4. Power Supply Adapter Requirements

Regulated Output: 5.1V

CC

± 5%, 2.5A.

Warning: If you are using the board version 02170-2, make sure that the power plug polarity is

(+) at the core and (-) at the outer shield.

5. Hub demo board Description

5.1. ISP1520 64-Pin TQFP Package

The ISP1520 has the following port configurations:

• One Hi-Speed USB and Original USB capable upstream facing port (USB0), and

• Four Hi-Speed USB and Original USB capable downstream facing ports (USB1, USB2, USB3,

USB4).

The downstream facing ports USB3 and USB4 can be disabled. By design, ports USB1 and USB2

cannot be disabled.

Table 5-1 shows the jumper setting versus port activation.

Table 5-1: Jumper Setting vs. Port Activation

*—Default settings.

J6, J5 Active Ports

OFF, OFF 1, 2, 3, 4*

ON, ON 1, 2

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 7 of 18

5.2. GoodLink Indicator

A Philips GoodLink LED D15 (red) is located near the upstream facing port. This LED blinks on

every successful USB transaction.

5.3. Port Power Switch Transistors

The hub switches the bus power of each downstream facing port through a low ohmic PMOS

transistor.

5.4. Overcurrent Circuit Detection

The integrated analog overcurrent detection circuit of the ISP1520 senses the voltage drop

across the power switch. When the port draws too much current, the voltage drop across the

power switch exceeds the trip voltage threshold. The overcurrent circuit detects this and

automatically switches off the power switch. More information on choosing the switch and

trimming the overcurrent detection voltage can be found in the ISP1520 Hi-Speed Universal Serial

Bus hub controller data sheet.

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 8 of 18

The hub demo board also contains an option to disable the overcurrent detection. This can be

done in two stages. First place the NOOC jumper in the appropriate position to set the hub’s

descriptor (see Table 5-2).

Table 5-2: Overcurrent Detection Selection Using NOOC

Then, desolder R28, R29, R30 and R31, and solder R32, R33, R34 and R36 on the PCB (see

schematics).

As a lower cost alternative, there are provisions on the board to use polyswitches to handle

overcurrent conditions. In this case the port switching transistors are bypassed. If this solution is

preferred, then the overcurrent detection circuit inside the chip must be switched to the digital

mode

Table 5-3: Mode Selection Using ADOC

*—

Default

settings.

5.5. Power Supply

This hub demo board can be used as a self-powered USB hub. When used as a self-powered hub,

use the provided power supply.

The SW1 switch sets the powering mode in the hub’s descriptors; see Table 5-4.

NOOC Overcurrent Detection Logic State

ON YES 0 (LOW)

OFF NO 1 (HIGH)

ADOC Mode Logic State

ON Digital 0 (LOW)

OFF Analog* 1 (HIGH)

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 9 of 18

Table 5-4: Power Mode Selection Using SW1

*—

Default

settings.

Figure 5-1: Windows Reporting of the Self-Powered Mode

5.6. I

2

C-Bus Interface

The ISP1520 can use either its USB descriptors from the internal ROM, or from an external I

2

C-

bus

TM

EEPROM or microcontroller. Mode selection is done through jumpers J1and J2 (see Table

5-5:).

Table 5-5: Mode Selection Using J1 and I2

*—Default settings.

SW1 Power Mode

S

Self-powered*

B

Ignore

J1 J2 Mode SCL SDA

ON ON

Internal ROM LOW LOW

OFF OFF

I

2

C-bus EEPROM* HIGH HIGH

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 10 of 18

An external I

2

C-bus controller acting as a master can also be used to update hub descriptors

through the J42 connector.

The J10 jumper is connected to the “Write Protect” pin of the I

2

C-bus EEPROM. The Hub

Controller and the EEPROM have different I

2

C-bus device addresses. To program this IC

on-board, select the jumper according to Table 5-6. It is recommended that you program the

I

2

C-bus EEPROM before connecting the hub to USB through the USB host.

For convenience, the hub demo board is equipped with a socket for this component, allowing

easy programming using a universal EPROM programmer as well.

Table 5-6: EEPROM Programming

6. Schematics

J10 WP_N

ON Write enable

OFF Write protect

1

2

3

4

5

6

7

8

D D

C C

B B

A A

Ti tle

Number Revis ionSize

A3

Date: 2004-04-27 Sheet of

File: C:\My NoteBook Raw\..\1520MINI_UPDATE.SCHDOCDrawn By:

ISP1520 BUS POWER EVAL. KIT

VBUS

A1

D-

A2

D+

A3

GND

A4

CHASSIS

A5

CHASSIS

A6

D-

B2

D+

B3

VBUS

B1

GND

B4

CHASSIS

B5

CHASSIS

B6

USB_D OWN

USB1

100u F

C11

15KR18

15KR19

SDA

5

SCL

6

WP

7

VCC

8

A0

1

A1

2

A2

3

GND

4

AT24C01

U1 5

1K 5, 5 %

R10

12K, 1 %

R11

V3.3REG

1

2

3

4

SIP_4P

J42

12MHz

X1

22pF

C9

22pF

C8

0. 1uFC7

VBUS

100u F

C13

15KR22

15KR23

VBUS

A1

D-

A2

D+

A3

GND

A4

CHASSIS

A5

CHASSIS

A6

D-

B2

D+

B3

VBUS

B1

GND

B4

CHASSIS

B5

CHASSIS

B6

USB_D OWN

USB2

15KR20

15KR21

15KR24

15KR25

100KR14

100KR15

V3.3REG

2K 2

R16

2K 2

R17

VDN

J2

J1

DM0

DP0

DM1

DP1

DM2

DP2

DM3

DP3

DM4

DP4

PSW1

PSW2

PSW3

PSW1

OC1

OC3

SUSPEND

ADOC

SP/B P

NOOC

AD OC

PSW2

PSW1

PSW3

PSW4

OC1

OC2

OC3

OC4

DM1

DP1

DP3

DM3

DM0

DM1

DM2

DM3

DM4

DM0

DM2

DM4

DP4

DP0

DP1

DP2

DP3

DP4

DP0

1uF

C15

1uF

C16

L1

V3.3REG

1

2

3

DC_IN

PWR_C1

V3.3REG

VCC5

VDN

VBUS

1

D-

2

D+

3

GND

4

CHASSIS

5

USB_UP

USB0

DM4

DP4

DM3

DP3

DM2

DP2

DM1

DP1

DM0

DP0

S1

1

G1

2

S2

3

G2

4

D2

5

D2

6

D1

7

D1

8

NTHD590 5T1

Q1

0 R

R28

0 R

R30

0. 1uFC5

0. 1uFC4

0. 1uFC3

1uF

C10

VBU S

VDN

PSW3

PSW4

NTHD5 905T1

Q2

VDN

100u F

C14

100u F

C12

0 R

R29

OC2

1 2

3 4

5 6

SP/BP#

SW1

SP/BP

10K

R12

NC

R13

0. 1uF

C6

VD N

V3.3REG

SP/BP

V3.3REG

0. 1uFC1

0. 1uFC2

OC2

OC4

PSW4

PSW2

V3.3REG

0 R

R31

OC4

330R

R9

RED

D15

500K

R5

VDN

0. 1uF

C20

J6

J5

V3 .3REG

NC

R105

VIN

2

VOUT

3

VSS

1

XC6206P30 2

U2

REF1

1

I/O1

2

I/O2

3

REF2

4

HEADER 3

ESD 1

REF1

1

I/O1

2

I/O2

3

REF2

4

HEADER 3

ESD 2

REF1

1

I/O1

2

I/O2

3

REF2

4

HEADER 3

ESD 3

REF1

1

I/O1

2

I/O2

3

REF2

4

HEADER 3

ESD 4

REF1

1

I/O1

2

I/O2

3

REF2

4

HEADE R 3

ESD 5

VBUS1

VBUS2

VBUS3

VBUS4

VBUS1

VBUS2

VBUS3

VBUS4

VDN

NC

R35

J10

NC

R32

POLYSWITCH

F1

VDN

NC

R34

POLYSWITCH

F3

VDN

NC

R33

POLYSWITCH

F2

VDN

NC

R36

POLYSWITCH

F4

VDN

JUMPER

ADOC

100KR37

JUMPER

NOOC

VDN

RESET

31

HP

17

PSW4

26

PSW3

28

PSW2

30

PSW1

20

OC4

25

OC3

27

OC2

29

OC1

19

SP/BP

18

SUSPEND

1

ADOC

32

NOOC

49

GRN1

60

GRN2

54

GRN3

52

GRN4

50

AM B1

61

AM B2

55

AM B3

53

AM B4

51

HU BGL

62

SCL

63

SDA

64

DP4

48

DM4

47

DP3

44

DM3

43

DP2

37

DM2

36

DP1

16

DM1

15

DP0

4

DM0

3

XTAL1

33

XTAL2

34

RPU

5

RREF

7

DGND

21

DGND

22

DGND

58

DGND

59

AGND

2

AGND

6

AGND

10

AGND

14

AGND

35

AGND

40

AGND

42

AGND

46

VCC5

24

VCC5

56

VCC4

41

VCC1

39

TE ST_H IGH

8

VCC1

9

VCC4

11

VCC2

13

VCC3

23

TE ST_H IGH

38

VCC2

45

TE ST_H IGH

12

VCC3

57

Qrp u N PN

5K6

RVbus

VBUS

Alternative solution for OC

Solder R32 to disable OC detection for port1

Solder R33 to disable OC detection for port2

Solder R34 to disable OC detection for port3

Solder R36 to disable OC detection for port4

Analog OC : No JUMPER

Digital OC : JUMPER

OC protectio n : No JUMPER

No OC protection : JUMPER

No EEPROM used: J1 & J2

EEPROM used: No J1 & J2

J5 & J6 : To disable port#3 & port#4

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 12 of 18

Component Placement

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 13 of 18

Layer 1: Top Routing

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 14 of 18

Layer 2: Ground Planes

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 15 of 18

Layer3: Power Planes

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 16 of 18

Layer 4: Bottom Routing

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 17 of 18

7. Installing the Board

Assuming that you have already installed the USB host adapter (including drivers) on a computer

running Windows, installing the hub is fairly simple.

1. Plug in power from the power supply to the hub. The power supply must meet the

requirements specified in Section 4.

2. Plug a USB cable in the USB0 port, and connect the other end of the cable to the USB host.

After a while the GoodLink LED (D15) will start to blink. This indicates that the

enumeration process has successfully completed and the hub is now ready for use.

You can check the driver installation in the Device Manager window. To check whether the hub

is correctly installed in high-speed, select the View-Devices by connection command in the

Device Manager window.

3. Plug in devices at the downstream facing ports.

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

User manual Rev. 04.00 — 11 May 2004 18 of 18

8. Bill of Materials for the ISP1520 Hub demo board

9. References

• Universal Serial Bus Specification Rev. 2.0 (http://www.usb.org/)

• ISP1520 Hi-Speed Universal Serial Bus hub controller data sheet.

Part Type Designator Footprint Description

0.1 F C1 C2 C3 C4 C5 C6 C7 C20 0603C Capacitor

0 Ώ R105 R32 R34 R31 R29 R30 R28 R33 R36 0603R —

1.5 kΏ, 5% R10 0603R —

1 F C10 REC1-2 Electrolytic capacitor

2.2 kΏ R16 R17 0603R —

10 kΏ R12 R13 0603R —

10 F C15 REC1-2 Electrolytic capacitor

12 kΏ, 1% R11 0603R —

12 MHz X1 XTAL7 Crystal

15 kΏ R20 R19 R18 R25 R22 R24 R23 R21 0603R —

22 pF C9 C8 0603C Capacitor

22 F C16 REC1-2 Electrolytic capacitor

100 kΏ R14 R15 R37 R5 R35 0603R —

100 F C11 C14 C12 C13 REC15-3 Electrolytic capacitor

330 Ώ R9 0603R —

AT24C01 U15 DIP8 —

BLM41P600S L1 1206CUST —

DC_IN PWR_C1 DC-JACK2 —

HEADER 3 ESD1 ESD2 ESD5 ESD4 ESD3 SOT-143 ESD protection *

ISP1520_LQFP64 U1 LQFP64 —

J1 J10 J1 RAD0.1 Jumper

J5 J5 RAD0.1 Jumper

J6 J6 RAD0.1 Jumper

J16 J2 RAD0.1 Jumper

JUMPER NOOC ADOC RAD0.1 Jumper

NCP1117 U2 TO-263/D2PAK —

NTHD5905T1 Q1 Q2 CHIPFET Logic level dual P-channel

MOSFET

POLYSWITCH F4 F2 F3 F1 POLYSWITCH —

RED D15 LED3 —

SIP_4P J42 PS24254-4 Connector

SP/BP# SW1 DIP6 —

USB_DOWN USB2 USB1 USB-TYPEA-737745 —

USB_UP USB0 USB-TYPEB —

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