SMSC USB2507 User Manual

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USB2507

Integrated USB 2.0

Compatible 7-Port Hub

PRODUCT FEATURES

Datasheet

Integrated USB 2.0 Compatible 7-Port Hub

7 Transaction Translators for highest performance

High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and Low-Speed (1.5Mbits/s) compatible

Full power management with per port or ganged, selectable power control

Detects Bus-Power/Self-Power source and changes mode automatically

Complete USB Specification 2.0 Compatibility

Includes USB 2.0 Transceivers

VID/PID/DID, and Port Configuration for Hub via:

Single Serial I2C EEPROM

SMBus Slave Port

Default VID/PID/DID, allows functionality when configuration EEPROM is absent

Hardware Strapping options allow for configuration without an external EEPROM or SMBus Host

On-Board 24MHz Crystal Driver Circuit or 24 MHz external clock driver

Internal PLL for 480MHz USB 2.0 Sampling

Internal 1.8V Linear Voltage Regulator

Integrated USB termination and Pull-up/Pull-down resistors

Internal Short Circuit protection of USB differential signal pins

1.8 Volt Low Power Core Operation

3.3 Volt I/O with 5V Input Tolerance

80-Pin TQFP lead-free RoHS compliant package

SMSC USB2507

DATASHEET

Revision 2.3 (08-27-07)

Integrated USB 2.0 Compatible 7-Port Hub

Datasheet

ORDER NUMBER:

USB2507-ADT FOR 80 PIN TQFP LEAD-FREE ROHS COMPLIANT PACKAGE

80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123

Copyright © 2007 SMSC or its subsidiaries. All rights reserved.

Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered trademark of Standard Microsystems Corporation (“SMSC”). Product names and company names are the trademarks of their respective holders.

SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL WARRANTIES ARISING FROM ANY COURSE OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES; OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES OF ANY KIND; REGARDLESS OF THE FORM OF ACTION, WHETHER BASED ON CONTRACT; TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Revision 2.3 (08-27-07)

2

SMSC USB2507

 

DATASHEET

 

Integrated USB 2.0 Compatible 7-Port Hub

Datasheet

Table of Contents

Chapter 1 General Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 OEM Selectable Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 2

Pin Table 7-Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

Chapter 3

Pin Configuration 7-Port Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

Chapter 4

7-Port Hub Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9

Chapter 5 Functional Block Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1 7-Port Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1.1 Hub Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1.2 VBus Detect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2 EEPROM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2.1 I2C EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2.2 In-Circuit EEPROM Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.3 EEPROM DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.3 SMBus Slave Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.3.1 Bus Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.3.2 Invalid Protocol Response Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.3.3 General Call Address Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.3.4 Slave Device Time-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.3.5 Stretching the SCLK Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.3.6 SMBus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.3.7 Bus Reset Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.3.8 SMBus Alert Response Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.3.9 Internal SMBus Memory Register Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.4 Default Configuration Option: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.5 Default Strapping Options: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.6 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.6.1 External Hardware RESET_N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.6.2 USB Bus Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Chapter 6 XNOR Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Chapter 7 DC Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.1 Maximum Guaranteed Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.2 Recommended Operating Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Chapter 8 AC Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.1 Oscillator/Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.1.1 SMBus Interface: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.1.2 I2C EEPROM: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.1.3 USB 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Chapter 9 Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

SMSC USB2507

3

Revision 2.3 (08-27-07)

 

DATASHEET

 

Integrated USB 2.0 Compatible 7-Port Hub

Datasheet

List of Figures

Figure 3.1 7-Port 80-Pin TQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 4.1 7-Port Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 5.1 LED Strapping Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Figure 5.2 Reset_N Timing for Default/Strap Option Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 5.3 Reset_N Timing for EEPROM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 5.4 Reset_N Timing for SMBus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Figure 9.1 80 Pin TQFP Package Outline (12x12x1.4 mm body - 2 mm footprint) . . . . . . . . . . . . . . . . . 44

Revision 2.3 (08-27-07)

4

SMSC USB2507

 

DATASHEET

 

Integrated USB 2.0 Compatible 7-Port Hub

Datasheet

List of Tables

Table 2.1 7-Port Pin Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 4.1 7-Port Hub Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 4.2 SMBus or EEPROM Interface Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 4.3 Miscellaneous Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 4.4 Power, Ground, and No Connect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 4.5 Buffer Type Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 5.1 User-Defined Descriptor Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Table 5.2 SMBus Write Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Table 5.3 SMBus Read Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Table 5.4 SMBus Slave Interface Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Table 5.5 Reset_N Timing for Default/Strap Option Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Table 5.6 Reset_N Timing for EEPROM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Table 5.7 Reset_N Timing for SMBus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Table 7.1 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Table 9.1 80 Pin TQFP Package Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

SMSC USB2507

5

Revision 2.3 (08-27-07)

 

DATASHEET

 

Integrated USB 2.0 Compatible 7-Port Hub

Datasheet

Chapter 1 General Description

The SMSC 7-Port Hub is fully compliant with the USB 2.0 Specification and will attach to a USB host as a Full-Speed Hub or as a Full-/High-Speed Hub. The 7-Port Hub supports Low-Speed, Full-Speed, and High-Speed (if operating as a High-Speed Hub) downstream devices on all of the enabled downstream ports.

A dedicated Transaction Translator (TT) is available for each downstream facing port. This architecture ensures maximum USB throughput for each connected device when operating with mixed-speed peripherals.

The Hub works with an external USB power distribution switch device to control VBUS switching to downstream ports, and to limit current and sense over-current conditions.

All required resistors on the USB ports are integrated into the Hub. This includes all series termination resistors on D+ and D– pins and all required pull-down and pull-up resistors on D+ and D– pins. The over-current sense inputs for the downstream facing ports have internal pull-up resistors.

Throughout this document the upstream facing port of the hub will be referred to as the upstream port, and the downstream facing ports will be called the downstream ports.

1.1OEM Selectable Features

A default configuration is available in the USB2507 following a reset. This configuration may be sufficient for some applications. Strapping option pins make it possible to modify a limited sub-set of the configuration options.

The USB2507 may also be configured by an external EEPROM or a microcontroller. When using the microcontroller interface, the Hub appears as an SMBus slave device. If the Hub is pin-strapped for external EEPROM configuration but no external EEPROM is present, then a value of ‘0’ will be written to all configuration data bit fields (the hub will attach to the host with all ‘0’ values).

The 7-Port Hub supports several OEM selectable features:

Operation as a Self-Powered USB Hub or as a Bus-Powered USB Hub.

Operation as a Dynamic-Powered Hub (Hub operates as a Bus-Powered device if a local power source is not available and switches to Self-Powered operation when a local power source is available).

Optional OEM configuration via I2C EEPROM or via the industry standard SMBus interface from an external SMBus Host.

LED indicator support.

Compound device support (port is permanently hardwired to a downstream USB peripheral device).

Hardware strapping options enable configuration of the following features. Non-Removable Ports

Port Power Polarity (active high or active low logic) Port Disable

LED support MTT enable

Ganged Vs Port power switching and over-current sensing

Revision 2.3 (08-27-07)

6

SMSC USB2507

 

DATASHEET

 

Integrated USB 2.0 Compatible 7-Port Hub

Datasheet

Chapter 2 Pin Table 7-Port

Table 2.1 7-Port Pin Table

UPSTREAM USB 2.0 INTERFACE (3 PINS)

USBDP0

USBDN0

 

VBUS_DET

 

 

 

 

 

 

7-PORT USB 2.0 INTERFACE (44 PINS)

 

 

 

 

 

 

USBDP1

USBDN1

 

USBDP2

USBDN2

 

 

 

 

 

USBDP3

USBDN3

 

USBDP4

USBDN4

 

 

 

 

 

USBDP5

USBDN5

 

USBDP6

USBDN6

 

 

 

 

 

USBDP7

USBDN7

 

 

 

 

 

 

 

 

GR1/

GR2/

 

GR3/

GR4/

NON_REM0

NON_REM1

 

PRT_DIS0

PRT_DIS1

 

 

 

 

 

GR5

GR6

 

GR7

 

 

 

 

 

 

AM1/

AM2/

 

AM3

AM4/

GANG_EN

MTT_EN

 

 

LED_EN

 

 

 

 

 

AM5

AM6

 

AM7

 

 

 

 

 

 

PRTPWR1

PRTPWR2

 

PRTPWR3

PRTPWR4

 

 

 

 

 

PRTPWR5

PRTPWR6

 

PRTPWR7

 

 

 

 

 

 

OCS1_N

OCS2_N

 

OCS3_N

OCS4_N

 

 

 

 

 

OCS5_N

OCS6_N

 

OCS7_N

 

 

 

 

 

 

PRTPWR_POL

RBIAS

 

 

 

 

 

 

 

 

SERIAL PORT INTERFACE (3 PINS)

 

 

 

 

 

 

SDA/SMBDATA

SCL/SMBCLK/

 

CFG_SEL1

 

 

CFG_SEL0

 

 

 

 

 

 

 

 

 

MISC (8 PINS)

 

 

 

 

 

 

 

XTAL1/CLKIN

XTAL2

 

RESET_N

SELF_PWR

 

 

 

 

 

ATEST/

CLKIN_EN

 

TEST1

TEST0

REG_EN

 

 

 

 

 

 

 

 

 

POWER, GROUND (22 PINS)

 

SMSC USB2507

7

Revision 2.3 (08-27-07)

 

DATASHEET

 

Integrated USB 2.0 Compatible 7-Port Hub

Datasheet

Chapter 3 Pin Configuration 7-Port Hub

9''$ 86%'3 86%'1 966 86%'1 86%'3 9''$ 86%'3 86%'1 966

966 9'' 966 ;7$/

;7$/ &/.,1 9''$ 3// 9''$ 3//

$7(67 5(*B(1

5%,$6

966

9%86B'(7

5(6(7B1

3573:5B32/

&/.,1B(1

2&6B1

3573:5

2&6B1

3573:5

2&6B1

9''&5

9''

966

3573:5

 

2&6B1

3573:5

 

2&6B1

3573:5

 

2&6B1

3573:5

 

2&6B1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3573:5

*5

$0

*5

$0

*5

$0

9''

966

86% 9''

*5 357B',6

$0 /('B(1

*5 357B',6

$0

*5 121B5(0

$0 077B(1

*5 121B5(0

$0 *$1*B(1

6'$ 60%'$7$

6&/ 60%&/. &)*B6(/

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9''$

86%'3

86%'1

966

86%'1

86%'3

9''$

86%'3

86%'1

966

86%'1

86%'3

9''$

86%'3

86%'1

966

7(67

7(67

6(/)B3:5

&)*B6(/

Figure 3.1 7-Port 80-Pin TQFP

Revision 2.3 (08-27-07)

8

SMSC USB2507

 

DATASHEET

 

Integrated USB 2.0 Compatible 7-Port Hub

Datasheet

Chapter 4 7-Port Hub Block Diagram

 

 

 

 

 

 

 

 

 

 

To

 

 

 

 

 

 

 

 

 

Pin

EEPROM

 

 

 

 

 

 

 

 

 

or SMBus

Upstream

Upstream

24 MHz

3.3V

1.8V Strapping

USB Data

 

VBUS

Crystal

Cap

Options

Master

 

 

 

SD SCL

 

 

 

 

 

 

 

 

 

 

 

 

VBUS

PLL

1.8V

 

 

Internal

Serial

 

 

 

 

Defaults

Upstream

 

Power

 

Reg.

 

 

Select

Interface

 

Detect

 

 

 

 

 

 

PHY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Repeater

 

 

 

SIE

 

 

 

Controller

 

 

 

TT

TT

 

...

TT

Port

 

 

 

#1

#2

 

 

#7

Controller

 

 

Routing Logic

 

 

 

 

 

 

 

 

 

Port #1

 

 

 

 

 

Port #7

Downstream

OC Sense

 

Downstream

OC Sense

PHY #1

 

Switch Driver ...

 

PHY #7

Switch Driver

 

 

LED Drivers

 

 

 

 

 

LED Drivers

 

Downstream

OC

Switch/LED

Downstream

OC

Switch/LED

 

USB Data

Sense

Drivers

 

USB Data

Sense

Drivers

 

 

Figure 4.1 7-Port Block Diagram

 

 

Table 4.1 7-Port Hub Pin Descriptions

 

 

 

 

 

 

 

 

 

NAME

SYMBOL

TYPE

 

 

 

 

FUNCTION

 

 

 

 

 

 

 

UPSTREAM USB 2.0 INTERFACE

 

 

 

 

 

 

USB Bus Data

USBDN0

IO-U

 

These pins connect to the upstream USB bus data signals.

 

USBDP0

 

 

 

 

 

 

 

 

 

 

 

 

Detect Upstream

VBUS_DET

I/O12

 

Detects state of Upstream VBUS power. The SMSC Hub

VBUS Power

 

 

 

 

monitors VBUS_DET to determine when to assert the

 

 

 

 

 

internal D+ pull-up resistor (signalling a connect event).

 

 

 

 

 

When designing a detachable hub, this pin must be

 

 

 

 

 

connected to the VBUS power pin of the USB port that is

 

 

 

 

 

upstream of the hub. (Use of a weak pull-down resistor is

 

 

 

 

 

recommended.)

 

 

 

 

 

 

 

For self-powered applications with a permanently attached

 

 

 

 

 

host, this pin must be pulled-up to either 3.3V or 5.0V

 

 

 

 

 

(typically VDD33).

 

 

 

 

 

 

 

 

 

 

 

SMSC USB2507

9

Revision 2.3 (08-27-07)

 

DATASHEET

 

 

 

 

Integrated USB 2.0 Compatible 7-Port Hub

 

 

 

Datasheet

 

Table 4.1 7-Port Hub Pin Descriptions (continued)

 

 

 

 

NAME

SYMBOL

TYPE

FUNCTION

 

 

 

 

 

 

7-PORT USB 2.0 HUB INTERFACE

 

 

 

 

High-Speed USB

USBDN[7:1]

IO-U

These pins connect to the downstream USB peripheral

Data

USBDP[7:1]

 

devices attached to the Hub’s ports.

 

 

 

 

USB Power

PRTPWR[7:1]

O12

Enables power to USB peripheral devices (downstream).

Enable

 

 

The active signal level of the PRTPWR7:1 pins is

 

 

 

 

 

 

determined by the Power Polarity Strapping function of the

 

 

 

PRTPWR_POL pin.

 

 

 

 

Ports [7:5] Green

GR[7:5]

I/O12

Green indicator LED’s for ports[7:5]. LED is active low

LED

 

 

 

 

 

 

 

Port 4:3 Green

GR[4:3]/

I/O12

Green indicator LED for ports 4 and 3. Will be active low

LED

PRT_DIS[1:0]

 

when LED support is enabled via EEPROM or SMBus.

&

 

 

If the hub is configured by the internal default configuration,

Port Disable

 

 

 

 

these pins will be sampled at RESET_N negation to

strapping option.

 

 

 

 

determine if ports [7:5] will be permanently disabled. Also,

 

 

 

 

 

 

the active state of the LED’s will be determined as follows:

 

 

 

PRT_DIS[1:0] = ‘00’, All ports are enabled,

 

 

 

GR4 is active high,

 

 

 

GR3 is active high.

 

 

 

PRT_DIS[1:0] = ‘01’, Port 7 is disabled,

 

 

 

GR4 is active high,

 

 

 

GR3 is active low.

 

 

 

PRT_DIS[1:0] = ‘10’, Ports 7 & 6 are disabled,

 

 

 

GR4 is active low,

 

 

 

GR3 is active high.

 

 

 

PRT_DIS[1:0] = ‘11’, Ports 7, 6 & 5 are disabled,

 

 

 

GR4 is active low,

 

 

 

GR3 is active low.

 

 

 

 

Port [2:1] Green

GR[2:1]/

I/O12

Green indicator LED for ports 2 and 1. Will be active low

LED

NON_REM[1:0]

 

when LED support is enabled via EEPROM or SMBus.

&

 

 

If the hub is configured by the internal default configuration,

Port Non-

 

 

 

 

these pins will be sampled at RESET_N negation to

Removable

 

 

 

 

determine if ports [3:1] contain permanently attached (non-

strapping option.

 

 

 

 

removable) devices. Also, the active state of the LED’s will

 

 

 

be determined as follows:

 

 

 

NON_REM[1:0] = ‘00’, All ports are removable,

 

 

 

GR2 is active high,

 

 

 

GR1 is active high.

 

 

 

NON_REM[1:0] = ‘01’, Port 1 is non-removable,

 

 

 

GR2 is active high,

 

 

 

GR1 is active low.

 

 

 

NON_REM[1:0] = ‘10’, Ports 1 & 2 are non-removable,

 

 

 

GR2 is active low,

 

 

 

GR1 is active high.

 

 

 

NON_REM[1:0] = ‘11’, Ports 1, 2, & 3 are non-removable,

 

 

 

GR2 is active low,

 

 

 

GR1 is active low.

 

 

 

 

Ports [7:5] Amber

AM[7:5]

I/O12

Amber indicator LED’s for ports [7:5], LED is active low.

LED

 

 

 

 

 

 

 

Revision 2.3 (08-27-07)

10

SMSC USB2507

 

DATASHEET

 

Integrated USB 2.0 Compatible 7-Port Hub

Datasheet

Table 4.1 7-Port Hub Pin Descriptions (continued)

NAME

SYMBOL

TYPE

FUNCTION

 

 

 

 

Port 4 Amber

AM4/

I/O12

Amber indicator LED for port 4. Will be active low when LED

LED

LED_EN

 

support is enabled via EEPROM or SMBus.

&

 

 

If the hub is configured by the internal default configuration,

LED Enable

 

 

 

 

this pin will be sampled at RESET_N negation to determine

strapping option

 

 

 

 

if LED support is enabled or disabled. Also, the active state

 

 

 

 

 

 

of the LED will be determined as follows:

 

 

 

‘0’ = LED support is disabled, LED is inactive

 

 

 

‘1’ = LED Support is enabled, LED is active low.

 

 

 

 

Port 3 Amber

AM3

I/O12

Amber indicator LED for port 3. Signal will be active low.

LED

 

 

 

 

 

 

 

Port 2 Amber

AM2/

I/O12

Amber indicator LED for port 2. Will be active low when LED

LED

MTT_EN

 

support is enabled via EEPROM or SMBus.

&

 

 

If the hub is configured by the internal default configuration,

MTT Disable

 

 

 

 

this pin will be sampled at RESET_N negation to determine

 

 

 

 

 

 

if MTT support is disabled (STT only). Also, the active state

 

 

 

of the LED will be determined as follows:

 

 

 

‘0’ = MTT support is disabled, LED is active high

 

 

 

‘1’ = MTT support is enabled, LED is active low.

 

 

 

 

Port 1 Amber

AM1/

I/O12

Amber indicator LED for port 1, Will be active low when LED

LED

GANG_EN

 

support is enabled via EEPROM or SMBus.

&

 

 

If the hub is configured by the internal default configuration,

Gang Power

 

 

 

 

this pin will be sampled at RESET_N negation to determine

Switching and

 

 

 

 

if downstream port power switching and current sensing are

Current Sensing

 

 

 

 

ganged, or individual port-by-port. Also, the active state of

strapping option.

 

 

 

 

the LED will be determined as follows:

 

 

 

 

 

 

‘0’ = Port-by-port sensing & switching, LED is active high

 

 

 

‘1’ = Ganged sensing & switching, LED is active low.

 

 

 

 

Port Power

PRTPWR_POL

I/O12

Port Power Polarity strapping determination for the active

Polarity strapping.

 

 

signal polarity of the 7:1PRTPWR pins.

 

 

 

While RESET_N is asserted, the logic state of this pin will

 

 

 

(though the use of internal combinatorial logic) determine

 

 

 

the active state of the 7:1PRTPWR pins in order to ensure

 

 

 

that downstream port power is not inadvertently enabled to

 

 

 

inactive ports during a hardware reset.

 

 

 

On the rising edge of RESET_N (see the applicable

 

 

 

RESET_N timing table in Section 5.6.1), the logic value will

 

 

 

be latched internally, and will retain the active signal polarity

 

 

 

for the PRTPWR7:1 pin.

 

 

 

‘1’ = PRTPWR7:1 pins have an active ‘high’ polarity

 

 

 

‘0’ = PRTPWR7:1 pins have an active ‘low’ polarity

 

 

 

 

Over Current

OCS7:1_N

IPU

Input from external current monitor indicating an over-

Sense

 

 

current condition. {Note: Contains internal pull-up to 3.3V

 

 

 

supply}

 

 

 

 

USB Transceiver

RBIAS

I-R

A 12.0kΩ (+/− 1%) resistor is attached from ground to this

Bias

 

 

pin to set the transceiver’s internal bias settings.

 

 

 

 

SMSC USB2507

11

Revision 2.3 (08-27-07)

 

DATASHEET

 

 

 

 

 

 

 

 

 

 

 

 

Integrated USB 2.0 Compatible 7-Port Hub

 

 

 

 

 

 

 

 

 

 

 

Datasheet

 

 

 

 

Table 4.1 7-Port Hub Pin Descriptions (continued)

 

 

 

 

 

 

 

 

 

 

 

 

NAME

 

SYMBOL

 

 

TYPE

 

 

FUNCTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SERIAL PORT INTERFACE

 

 

 

 

 

 

 

 

 

 

 

Serial Data/SMB

 

SDA/SMBDATA

IOSD12

 

(Serial Data)/(SMB Data) signal.

Data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Serial Clock/SMB

 

SCL/SMBCLK/

IOSD12

 

(Serial Clock)/(SMB Clock) signal. This multifunction pin is

Clock

 

CFG_SEL0

 

 

 

 

read on the rising edge of RESET_N (see the applicable

&

 

 

 

 

 

 

 

 

 

RESET_N timing table in Section 5.6.1) and will determine

Config Select 0

 

 

 

 

 

 

 

the hub configuration method as described in Table 4.2.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Configuration

 

CFG_SEL1

 

 

I

 

This multifunction pin is read on the rising edge of

Programming

 

 

 

 

 

 

 

RESET_N (see the applicable RESET_N timing table in

Select

 

 

 

 

 

 

 

Section 5.6.1) and will determine the hub configuration

 

 

 

 

 

 

 

 

 

 

method as described in Table 4.2.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 4.2 SMBus or EEPROM Interface Behavior

 

 

 

 

 

 

 

 

 

 

 

 

CFG_SEL1

 

CFG_SEL0

SMBus or EEPROM interface behavior.

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

0

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

1

Configured as an SMBus slave for external download of user-

 

 

 

 

 

 

 

 

 

defined descriptors. SMBus slave address is 0101100

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

0

Internal Default Configuration via strapping options.

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

1

2-wire (I2C) EEPROMS are supported,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 4.3 Miscellaneous Pins

 

 

 

 

 

 

 

 

 

 

NAME

 

 

SYMBOL

 

 

TYPE

 

 

FUNCTION

 

 

 

 

 

 

 

 

 

 

Crystal

 

 

XTAL1/

 

 

ICLKx

 

 

24MHz crystal or external clock input.

Input/External

 

 

CLKIN

 

 

 

 

 

This pin connects to either one terminal of the crystal or

Clock Input

 

 

 

 

 

 

 

 

 

to an external 24MHz clock when a crystal is not used.

 

 

 

 

 

 

 

 

 

 

Crystal Output

 

 

XTAL2

 

 

OCLKx

 

 

24MHz Crystal

 

 

 

 

 

 

 

 

 

 

 

This is the other terminal of the crystal, or left

 

 

 

 

 

 

 

 

 

 

 

unconnected when an external clock source is used to

 

 

 

 

 

 

 

 

 

 

 

drive XTAL1/CLKIN. It must not be used to drive any

 

 

 

 

 

 

 

 

 

 

 

external circuitry other than the crystal circuit.

 

 

 

 

 

 

 

 

 

 

Clock Input

 

 

CLKIN_EN

 

 

I

 

 

Clock In Enable:

Enable

 

 

 

 

 

 

 

 

 

Low = XTAL1 and XTAL2 pins configured for use with

 

 

 

 

 

 

 

 

 

 

 

external crystal

 

 

 

 

 

 

 

 

 

 

 

High = XTAL1 pin configured as CLKIN, and must be

 

 

 

 

 

 

 

 

 

 

 

driven by an external CMOS clock.

 

 

 

 

 

 

 

 

 

 

RESET Input

 

 

RESET_N

 

 

IS

 

 

This active low signal is used by the system to reset the

 

 

 

 

 

 

 

 

 

 

 

chip. The minimum active low pulse is 1us.

 

 

 

 

 

 

 

 

 

 

Self-Power /

 

 

SELF_PWR

 

 

I

 

 

Detects availability of local self-power source.

Bus-Power

 

 

 

 

 

 

 

 

 

Low = Self/local power source is NOT available (i.e., Hub

Detect

 

 

 

 

 

 

 

 

 

gets all power from Upstream USB VBus).

 

 

 

 

 

 

 

 

 

 

 

High = Self/local power source is available.

TEST Pins

 

 

TEST[1:0]

 

 

IPD

 

 

Used for testing the chip. User must treat as a no-

 

 

 

 

 

 

 

 

 

 

 

connect or connect to ground.

 

 

 

 

 

 

 

 

 

 

 

 

Revision 2.3 (08-27-07)

12

SMSC USB2507

 

DATASHEET

 

Integrated USB 2.0 Compatible 7-Port Hub

Datasheet

Table 4.3 Miscellaneous Pins (continued)

NAME

SYMBOL

TYPE

FUNCTION

 

 

 

 

Analog Test

ATEST/

AIO

This signal is used for testing the analog section of the

&

REG_EN

 

chip, and to enable or disable the internal 1.8v regulator.

Internal 1.8V

 

 

This pin must be connected to VDDA33 to enable the

voltage

 

 

 

 

internal 1.8V regulator, or to VSS to disable the internal

regulator

 

 

 

 

regulator.

enable

 

 

 

 

 

 

 

 

When the internal regulator is enabled, the 1.8V power

 

 

 

pins must be left unconnected, except for the required

 

 

 

bypass capacitors.When the PHY is in test mode, the

 

 

 

internal regulator is disabled and the ATEST pin

 

 

 

functions as a test pin.

 

 

 

 

Table 4.4 Power, Ground, and No Connect

NAME

SYMBOL

TYPE

FUNCTION

 

 

 

 

VDDCORE3P3

VDD33CR

 

+3.3V I/O Power.

 

 

 

If the internal core 1.8V regulator is enabled, then this pin

 

 

 

acts as the regulator input

 

 

 

 

VDD1P8

VDD18

 

+1.8V core power.

 

 

 

If the internal regulator is enabled, then VDD18 pin 50

 

 

 

must have a 4.7μF (or greater) ±20% (ESR <0.1Ω)

 

 

 

capacitor to VSS

 

 

 

 

VDDAPLL3P3

VDDA33PLL

 

+3.3V Filtered analog power for the internal PLL

 

 

 

If the internal PLL 1.8V regulator is enabled, then this pin

 

 

 

acts as the regulator input

 

 

 

 

VDDAPLL1P8

VDDA18PLL

 

+1.8V Filtered analog power for internal PLL.

 

 

 

If the internal regulator is enabled, then this pin must

 

 

 

have a 4.7μF (or greater) ±20% (ESR <0.1Ω) capacitor

 

 

 

to VSS

 

 

 

 

VDDIO3P3

VDD33

 

+3.3V I/O power.

 

 

 

 

VDDA3P3

VDDA33

 

+3.3V Filtered analog power.

 

 

 

 

VSS

VSS

 

Ground.

 

 

 

 

 

 

Table 4.5 Buffer Type Descriptions

 

 

 

 

BUFFER

 

 

DESCRIPTION

 

 

 

 

I

Input.

 

 

 

 

IPD

Input, with a weak Internal pull-down.

 

 

 

IPU

Input, with a weak Internal pull-up.

 

 

 

 

IS

Input with Schmitt trigger.

 

 

 

 

 

O12

Output 12mA.

 

 

 

 

 

 

SMSC USB2507

13

Revision 2.3 (08-27-07)

 

DATASHEET

 

 

Integrated USB 2.0 Compatible 7-Port Hub

 

Datasheet

 

Table 4.5 Buffer Type Descriptions (continued)

 

 

BUFFER

DESCRIPTION

 

 

I/O12

Input/Output, 12mA

 

 

IOSD12

Open drain….12mA sink with Schmitt trigger, and must meet I2C-Bus Specification Version 2.1

 

requirements.

 

 

ICLKx

XTAL Clock Input

 

 

OCLKx

XTAL Clock Output

 

 

I-R

RBIAS

 

 

IO-U

Defined in USB Specification.

 

Note: Meets USB 1.1 requirements when operating as a 1.1-compliant device and meets USB

 

2.0 requirements when operating as a 2.0-compliant device.

 

 

AIO

Analog Input/output. Per PHY test requirements.

 

 

Revision 2.3 (08-27-07)

14

SMSC USB2507

 

DATASHEET

 

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