View USB2514B-AEZG_4579662.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

USB2512/12A/12B USB2513/13B USB2514/14B USB2517
USB 2.0 Hi-Speed Hub Controller
PRODUCT FEATURES
General Description
The SMSC USB251x hub is a family of low-power, OEM configurable, MTT (multi transaction translator)1 hub controller IC products for embedded USB solutions. The "x" in the part number indicates the number of downstream ports available. The SMSC hub supports low-speed, full-speed, and hi-speed (if operating as a hispeed hub) downstream devices on all of the enabled downstream ports. For a summary of the products documented in this datasheet, please refer to the Chapter 1, "USB251x Hub Family Differences Overview," on page 7.
Datasheet
Features
Full power management with individual or ganged power control of each downstream port Fully integrated USB termination and pull-up/pulldown resistors Supports a single external 3.3 V supply source; internal regulators provide 1.2 V or 1.8 V internal core voltage On-chip driver for 24 MHz crystal resonator or external 24/48 MHz clock input Customizable vendor ID, product ID, and device ID ESD protection up to 4 kilovolts on all USB pins Supports self- or bus-powered operation USB251xB2 and USB251xBi products support the USB Battery Charging specification Lead-free RoHS compliant packages:
-- 36-pin QFN (6x6 mm) -- 48-pin QFN (7x7 mm) -- 64-pin QFN (9x9 mm)
Highlights
High performance, low-power, small footprint hub controller IC with 2, 3, 4, or 7 downstream ports (indicated by the "x" in the part number) Fully compliant with the USB 2.0 specification Enhanced OEM configuration options available through either a single serial I2C(R) EEPROM, or SMBus slave port MultiTRAKTM PortMap
USB251xi, USB2512Ai, and USB251xBi products support the industrial temperature range of -40C to +85C
Applications
LCD monitors and TVs Multi-function USB peripherals PC motherboards Set-top boxes, DVD players, DVR/PVR Printers and scanners PC media drive bay Portable hub boxes Mobile PC docking Embedded systems
-- High-performance multiple transaction translator which provides one transaction translator per port -- Flexible port mapping and disable sequencing -- Programmable USB differential-pair pin locations ease PCB design by aligning USB signal lines directly to connectors -- Programmable USB signal drive strength for recovering signal integrity using 4-level driving strength resolution
PortSwap
PHYBoost
1.USB2512A/Ai only uses a single transaction translator.
2.USB251xB and USB251xBi products are not yet available. The information in this datasheet regarding USB251xB/Bi serves as a preliminary product preview.
SMSC USB251x Hub Family
DATASHEET
Revision 1.0 (3-11-09)
USB 2.0 Hi-Speed Hub Controller Datasheet
ORDER NUMBERS: LEAD-FREE ROHS COMPLIANT PACKAGE
36QFN
ORDER NUMBERS USB2512-AEZG USB2512A-AEZG USB2512B-AEZG USB2513-AEZG USB2513B-AEZG USB2514-AEZG USB2514B-AEZG USB2512i-AEZG USB2512Ai-AEZG USB2512Bi-AEZG USB2513i-AEZG USB2513Bi-AEZG USB2514i-AEZG USB2514Bi-AEZG USB2513-HZH USB2514-HZH USB2517-JZX USB2517i-JZX
PACKAGE SIZE
6 x 6 x 0.5 mm
TEMPERATURE RANGE
0C to 70C
36QFN
6 x 6 x 0.5 mm
-40C to 85C
48QFN 64QFN 64QFN
7 x 7 x 0.5 mm 9 x 9 x 0.5 mm 9 x 9 x 0.5 mm
0C to 70C 0C to 70C -40C to 85C
Note: USB251xB/USB251xBi products have not yet been released. They are featured in this datasheet as a preliminary product preview.
80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright (c) 2009 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 1.0 (3-11-09)
2
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table of Contents
Chapter 1 USB251x Hub Family Differences Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Chapter 2 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Chapter 3 Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Chapter 4 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Chapter 5 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1 5.2 5.3 Pin Configurations and Lists (Organized by Package Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 USB251x Pin Descriptions (Grouped by Function). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Buffer Type Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Chapter 6 LED Usage Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1 LED Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6.1.1 USB Mode 14-Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6.1.2 LED Mode Speed Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Chapter 7 Battery Charging Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.1 7.2 7.3 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . USB Battery Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.2.1 Special Behavior of PRTPWR Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Battery Charging Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3.1 Battery Charging enabled via EEPROM or SMBus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 31 31 32 32
Chapter 8 Configuration Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.1 Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.1 Hub Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.2 SMBus or EEPROM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1.3 VBus Detect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EEPROM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2.1 Internal Register Set (Common to EEPROM and SMBus) . . . . . . . . . . . . . . . . . . . . . . . 8.2.2 I2C EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2.3 In-Circuit EEPROM Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SMBus Slave Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.1 SMBus Slave Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.2 Bus Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.3 Invalid Protocol Response Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.4 General Call Address Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.5 Slave Device Time-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.6 Stretching the SCLK Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.7 SMBus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.8 Bus Reset Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.9 SMBus Alert Response Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Default Configuration Option: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Default Strapping Options: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.6.1 External Hardware RESET_N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.6.2 USB Bus Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 33 33 34 34 35 52 52 53 53 53 54 54 54 54 54 54 55 55 55 55 55 58
8.2
8.3
8.4 8.5 8.6
Chapter 9 DC Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
SMSC USB251x 3 Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
9.1 9.2
Maximum Guaranteed Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Chapter 10 AC Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10.1 Oscillator/Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.1.1 SMBus Interface: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.1.2 I2C EEPROM: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.1.3 USB 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 66 66 66
Chapter 11 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
11.1 Tape and Reel Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Revision 1.0 (3-11-09)
4
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
List of Tables
Table 1.1 Table 1.2 Table 1.3 Table 5.1 Table 5.2 Table 5.3 Table 8.1 Table 8.2 Table 8.3 Table 8.4 Table 8.5 Table 8.6 Table 8.7 Table 8.8 Table 8.9 Table 9.1 Table 9.2 36-pin QFN (6x6x0.5 mm) RoHS Compliant Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 48-pin QFN (7x7x0.5 mm) RoHS Compliant Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 64-pin QFN (9x9x0.5 mm) RoHS Compliant Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Pin List in Alphabetical Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 USB251x Pin Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Buffer Type Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Hub Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Internal Default, EEPROM and SMBus Register Memory Map. . . . . . . . . . . . . . . . . . . . . . . . 35 PortMap Register for Ports 1 & 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 PortMap Register for Ports 3 & 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 PortMap Register for Ports 5 & 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 PortMap Register for Port 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Reset_N Timing for Default/Strap Option Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Reset_N Timing for EEPROM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Reset_N Timing for SMBus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Pin Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
SMSC USB251x
5
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
List of Figures
Figure 4.1 Figure 5.1 Figure 5.2 Figure 5.3 Figure 5.4 Figure 5.5 Figure 5.6 Figure 6.1 Figure 7.1 Figure 8.1 Figure 8.2 Figure 8.3 Figure 8.4 Figure 8.5 Figure 9.1 Figure 10.1 Figure 10.2 Figure 10.3 Figure 11.1 Figure 11.2 Figure 11.3 Figure 11.4 Figure 11.5 Figure 11.6 USB251x Hub Family Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-Port 36-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-Port 36-pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-Port 36-pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-Port 48-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-Port 48-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-Port 64-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dual Color LED Implementation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Battery Charging via External Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Block Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Block Read. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset_N Timing for Default/Strap Option Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset_N Timing for EEPROM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset_N Timing for SMBus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supply Rise Time Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Typical Crystal Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Formula to Find the Value of C1 and C2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Simplified Form of the Capacitance Formula . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-Pin QFN, 6x6 mm Body, 0.5 mm Pitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48-Pin QFN, 7x7 mm Body, 0.5 mm Pitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64-Pin QFN, 9x9 mm Body, 0.5 mm Pitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-Pin Package Tape Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48-Pin Package Tape Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-Pin and 48-Pin Package Reel Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 12 13 14 15 16 17 29 31 53 54 56 57 58 61 66 66 66 67 68 69 70 71 72
Revision 1.0 (3-11-09)
6
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Chapter 1 USB251x Hub Family Differences Overview
Table 1.1 36-pin QFN (6x6x0.5 mm) RoHS Compliant Part Numbers
Part Number Downstream ports Default TT True Speed Battery Charging LED Port Indicators Clock (MHz) 0C to 70C -40C to 85C
USB2512 USB2512A USB2512B USB2512i USB2512Bi USB2512Ai USB2513 USB2513B USB2513i USB2513Bi USB2514 USB2514B USB2514i USB2514Bi
2
multi**
*
24
2 3
multi**
* * * * *
24
multi
24
3 4
multi
24
multi
24
4
multi
24
Table 1.2 48-pin QFN (7x7x0.5 mm) RoHS Compliant Part Numbers
Part Number Downstream ports Default TT True Speed Battery Charging LED Port Indicators Clock (MHz) 0C to 70C -40C to 85C
USB2513 USB2514
3 4
multi multi
24/48 24/48
Table 1.3 64-pin QFN (9x9x0.5 mm) RoHS Compliant Part Numbers
Part Number Downstream ports Default TT True Speed Battery Charging LED Port Indicators Clock (MHz) 0C to 70C -40C to 85C
USB2517 USB2517i
7 7
multi multi
24 24
Note 1.1 Note 1.2
*Battery charging enable is only available on USB251x/xBi products. **USB2512A/Ai only uses a single transaction translator.
SMSC USB251x
7
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 High-Speed 2-Port Hub Controller Datasheet
Chapter 2 General Description
The SMSC USB251x hub family is a group of low-power, OEM configurable, MTT (multi transaction translator)1 hub controller IC's with downstream ports for embedded USB solutions. The SMSC USB251x hub family is fully compliant with the USB 2.0 specification. Each of the SMSC hub controllers can attach to an upstream port as a full-speed hub or as a full-/hi-speed hub. The SMSC hub controllers support low-speed, full-speed, and hi-speed (if operating as a hi-speed hub) downstream devices on all of the enabled downstream ports. 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 pullup resistors. The USB251x hub family includes programmable features such as: MultiTRAKTM Technology which utilizes a dedicated TT per port to maintain consistent fullspeed data throughput regardless of the number of active downstream connections. MultiTRAKTM outperforms conventional USB 2.0 hubs with a single TT in USB full-speed data transfers. PortMap which provides flexible port mapping and disable sequences. The downstream ports of a USB251x hub can be reordered or disabled in any sequence to support multiple platform designs with minimum effort. For any port that is disabled, the USB251x hub controllers automatically reorder the remaining ports to match the USB host controller's port numbering scheme. PortSwap which adds per-port programmability to USB differential-pair pin locations. PortSwap allows direct alignment of USB signals (D+/D-) to connectors to avoid uneven trace length or crossing of the USB differential signals on the PCB. PHYBoost which enables 4 programmable levels of USB signal drive strength in downstream port transceivers. PHYBoost attempts to restore USB signal integrity.
OEM Selectable Features
A default configuration is available in each of the SMSC USB251x hub controllers following a reset. This configuration may be sufficient for most applications. Strapping option pins make it possible to modify a sub-set of the configuration options. The USB251x hub controllers may 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 USB251x hub family supports OEM selectable features including: Optional OEM configuration via I2C EEPROM or via the industry standard SMBus interface from an external SMBus host or microcontroller. Supports compound devices on a port-by-port basis. Selectable over-current sensing and port power control on an individual or ganged basis to match the OEM's choice of circuit board component selection. Customizable vendor ID, product ID, and device ID. Configurable delay time for filtering the over-current sense inputs. Configurable downstream port power-on time reported to the host. Supports indication of the maximum current that the hub consumes from the USB upstream port. Supports Indication of the maximum current required for the hub controller.
1.USB2512A/2Ai only uses a single transaction translator.
Revision 1.0 (3-11-09) 8 SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Supports custom string descriptors (up to 31 characters): - Product string
- Manufacturer string - Serial number string
When available, pin selectable options for default configuration may include:
-Downstream ports as non-removable ports -Downstream ports as disabled ports -Downstream port power control and over-current detection on a ganged or individual basis -USB signal drive strength -USB differential pair pin location
SMSC USB251x
9
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Chapter 3 Acronyms
I2C(R): Inter-Integrated Circuit1 OCS: Over-Current Sense PCB: Printed Circuit Board PHY: Physical Layer PLL: Phase-Locked Loop QFN: Quad Flat No Leads RoHS: Restriction of Hazardous Substances Directive SCL: Serial Clock SIE: Serial Interface Engine SMBus: System Management Bus TT: Transaction Translator
1.I2C is a registered trademark of Philips Corporation.
Revision 1.0 (3-11-09) 10 SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Chapter 4 Block Diagram
To EEPROM or SMBus Master SDA SCK
To Upstream VBUS
Upstream USB Data 3.3 V
24 MHz Crystal
BusPower Detect/ Vbus Pulse
Upstream PHY Repeater
Regulator
PLL
Serial Interface
Serial Interface Engine
Controller
3.3 V Regulator
CRFILT
TT #1
...
TT #x
Port Controller
Routing & Port Re-Ordering Logic
Port #1 PHY#1
OC Sense Switch Driver/ LED Drivers
...
Port #x PHY#x
OC Sense Switch Driver/ LED Drivers
OC USB Data Port Downstream Sense Power Switch/ LED Drivers
USB Data OC Port Downstream Sense Power Switch/ LED Drivers
The `x' indicates the number of available downstream ports: 2, 3, 4, or 7.
Figure 4.1 USB251x Hub Family Block Diagram Note 4.1 Note 4.2 USB2512A/USB2512Ai only supports a single transaction translator. The LED port indicators only apply to USB2513/14 (48QFN only) and USB2517/17i.
SMSC USB251x
11
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Chapter 5 Pin Descriptions
This chapter is organized by a set of pin configurations (organized by package type) followed by a corresponding pin list organized alphabetically. A comprehensive and detailed description list of each signal (named in the pin list) is organized by function in Table 5.2, "USB251x Pin Descriptions," on page 22. Please refer to Table 5.3, "Buffer Type Descriptions," on page 27 for a list of buffer types. The "N" symbol in the signal name indicates that the active, or asserted, state occurs when the signal is at a low voltage level. When "N" is not present after the signal name, the signal is asserted when it is at the high voltage level. The terms assertion and negation are used exclusively. This is done to avoid confusion when working with a mixture of "active low" and "active high" signals. The term assert, or assertion, indicates that a signal is active, independent of whether that level is represented by a high or low voltage. The term negate, or negation, indicates that a signal is inactive.
5.1
Pin Configurations and Lists (Organized by Package Type)
SDA / SMBDATA / NON_REM[1]
SCL / SMBCLK / CFG_SEL[0]
HS_IND / CFG_SEL[1]
VBUS_DET
RESET_N
VDD33
NC
NC
27
26
25
24
23
22
21
20
SUSP_IND / LOCAL_PWR / NON_REM[0] VDD33 USBDM_UP USBDP_UP XTALOUT XTALIN / CLKIN PLLFILT RBIAS VDD33
28 29 30 31 32 33 34 35 36 1 2 3 4 5 6 7 8 9
19 18 17 16 15 14 13 12 11 10
NC
NC OCS_N[2] PRTPWR[2] / BC_EN[2]* VDD33 CRFILT OCS_N[1] PRTPWR[1] / BC_EN[1]* TEST VDD33
SMSC USB2512/12A/12B USB2512i/12Ai/12Bi (Top View QFN-36)
Ground Pad (must be connected to VSS)
USBDP_DN[1]
USBDM_DN[1]
USBDM_DN[2]
USBDP_DN[2]
VDD33
NC
NC
NC
Indicates pins on the bottom of the device.
Figure 5.1 2-Port 36-Pin QFN Note: *Battery charging enable (BC_EN) is only available in the USB251xB/Bi.
Revision 1.0 (3-11-09) 12 SMSC USB251x
DATASHEET
NC
USB 2.0 Hi-Speed Hub Controller Datasheet
SDA / SMBDATA / NON_REM[1]
SCL / SMBCLK / CFG_SEL[0]
HS_IND / CFG_SEL[1]
VBUS_DET
RESET_N
27
26
25
24
23
22
21
20
SUSP_IND / LOCAL_PWR / NON_REM[0] VDD33 USBDM_UP USBDP_UP XTALOUT XTALIN / CLKIN PLLFILT RBIAS VDD33
28 29 30 31 32 33 34 35 36 1 2 3 4 5 6 7 8 9
19 18 17 16 15 14 13 12 11 10
OCS_N[3]
VDD33
NC
NC
PRTPWR[3] / BC_EN[3]* OCS_N[2] PRTPWR[2] / BC_EN[2]* VDD33 CRFILT OCS_N[1] PRTPWR[1] / BC_EN[1]* TEST VDD33
SMSC USB2513/13i USB2513B/13Bi (Top View QFN-36)
Ground Pad (must be connected to VSS)
USBDM_DN[1] / PRT_DIS_M[1]
USBDM_DN[2] / PRT_DIS_M[2]
USBDM_DN[3] / PRT_DIS_M[3]
USBDP_DN[1] / PRT_DIS_P[1]
USBDP_DN[2] / PRT_DIS_P[2]
USBDP_DN[3] / PRT_DIS_P[3]
NC
Indicates pins on the bottom of the device.
Figure 5.2 3-Port 36-pin QFN Note: *Battery charging enable (BC_EN) is only available in the USB251xB/Bi.
SMSC USB251x
13
VDD33
NC
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
SDA / SMBDATA / NON_REM[1]
SCL / SMBCLK / CFG_SEL[0]
PRTPWR[4] / BC_EN[4]*
HS_IND / CFG_SEL[1]
VBUS_DET
RESET_N
OCS_N[4]
27
26
25
24
23
22
21
20
SUSP_IND / LOCAL_PWR / NON_REM[0] VDD33 USBDM_UP USBDP_UP XTALOUT XTALIN / CLKIN PLLFILT RBIAS VDD33
28 29 30 31 32 33 34 35 36 1 2 3 4 5 6 7 8 9
19 18 17 16 15 14 13 12 11 10
OCS_N[3]
VDD33
PRTPWR[3] / BC_EN[3]* OCS_N[2] PRTPWR[2] / BC_EN[2]* VDD33 CRFILT OCS_N[1] PRTPWR[1] / BC_EN[1]* TEST VDD33
SMSC USB2514/14i USB2514B/14Bi (Top View QFN-36)
Ground Pad (must be connected to VSS)
USBDP_DN[1] / PRT_DIS_P[1]
USBDP_DN[2] / PRT_DIS_P[2]
USBDP_DN[3] / PRT_DIS_P[3]
USBDM_DN[1] / PRT_DIS_M[1]
USBDM_DN[2] / PRT_DIS_M[2]
USBDM_DN[3] / PRT_DIS_M[3]
Indicates pins on the bottom of the device.
Figure 5.3 4-Port 36-pin QFN Note: *Battery charging enable (BC_EN) is only available in the USB251xB/Bi.
Revision 1.0 (3-11-09)
14
USBDM_DN[4] / PRT_DIS_M[4]
USBDP_DN[4] / PRT_DIS_P[4]
VDD33
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
SDA / SMBDATA / NON_REM[1]
SCL / SMBCLK / CFG_SEL[0]
36
35
34
33
32
31
30
29
28
27
26
LED_A_N[1] / PRTSWP[1] PRTPWR_POL SUSP_IND / LOCAL_PWR / NON_REM[0] SEL48 VDD33 USBDM_UP USBDP_UP XTALOUT XTALIN / CLKIN PLLFILT RBIAS VDD33
37 38 39 40 41 42 43 44 45 46 47 48 10 11 12 1 2 3 4 5 6 7 8 9 Ground Pad (must be connected to VSS)
25 24 23 22 21 20 19 18 17 16 15 14 13
LED_A_N[2] / PRTSWP[2]
LED_B_N[1] / BOOST[0]
HS_IND / CFG_SEL[1]
CFG_SEL[2]
VBUS_DET
RESET_N
OCS_N[3]
VDD33
NC
NC
LED_B_N[2] / BOOST[1] LED_A_N[3] / PRTSWP[3] LED_B_N[3] / GANG_EN PRTPWR[3] OCS_N[2] PRTPWR[2] VDD33 CRFILT OCS_N[1] PRTPWR[1] TEST NC
SMSC USB2513 (Top View QFN-48)
USBDM_DN[1] / PRT_DIS_M[1]
USBDM_DN[2] / PRT_DIS_M[2]
USBDM_DN[3] / PRT_DIS_M[3]
USBDP_DN[1] / PRT_DIS_P[1]
USBDP_DN[2] / PRT_DIS_P[2]
USBDP_DN[3] / PRT_DIS_P[3]
VDD33
VDD33
NC
NC
NC
Indicates pins on the bottom of the device.
Figure 5.4 3-Port 48-Pin QFN
SMSC USB251x
15
NC
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
SDA / SMBDATA / NON_REM[1]
SCL / SMBCLK / CFG_SEL[0]
36
35
34
33
32
31
30
29
28
27
26
LED_A_N[1] / PRTSWP[1] PRTPWR_POL SUSP_IND / LOCAL_PWR / NON_REM[0] SEL48 VDD33 USBDM_UP USBDP_UP XTALOUT XTALIN / CLKIN PLLFILT RBIAS VDD33
37 38 39 40 41 42 43 44 45 46 47 48 10 11 12 1 2 3 4 5 6 7 8 9 Ground Pad (must be connected to VSS)
25 24 23 22 21 20 19 18 17 16 15 14 13
LED_A_N[2] / PRTSWP[2]
LED_B_N[1] / BOOST[0]
HS_IND / CFG_SEL[1]
CFG_SEL[2]
PRTPWR[4]
VBUS_DET
RESET_N
OCS_N[4]
OCS_N[3]
VDD33
LED_B_N[2] / BOOST[1] LED_A_N[3] / PRTSWP[3] LED_B_N[3] / GANG_EN PRTPWR[3] OCS_N[2] PRTPWR[2] VDD33 CRFILT OCS_N[1] PRTPWR[1] TEST LED_A_N[4] / PRTSWP[4]
SMSC USB2514 (Top View QFN-48)
USBDP_DN[1] / PRT_DIS_P[1]
USBDP_DN[2] / PRT_DIS_P[2]
USBDP_DN[3] / PRT_DIS_P[3]
USBDM_DN[1] / PRT_DIS_M[1]
USBDM_DN[2] / PRT_DIS_M[2]
USBDM_DN[3] / PRT_DIS_M[3]
USBDM_DN[4] / PRT_DIS_M[4]
USBDP_DN[4] / PRT_DIS_P[4]
Indicates pins on the bottom of the device.
Figure 5.5 4-Port 48-Pin QFN
Revision 1.0 (3-11-09)
16
LED_B_N[4]
VDD33
VDD33
NC
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
SUSP_IND / LOCAL_PWR / NON_REM[0]
SDA / SMBDATA / NON_REM[1]
SCL / SMBCLK / CFG_SEL[0]
LED_A_N[3] / PRTSWP[3]
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
LED_A_N[2] / PRTSWP[2] LED_B_N[1] / BOOST[0] LED_A_N[1] / PRTSWP[1] VDD33 USBDM_DN[6] / PRT_DIS_M[6] USBDP_DN[6] / PRT_DIS_P[6] USBDM_DN[7] / PRT_DIS_M[7] USBDP_DN[7] / PRT_DIS_P[7] VDD33 USBDM_UP USBDP_UP XTALOUT XTALIN / CLKIN PLLFILT RBIAS VDD33
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 Ground Pad (must be connected to VSS)
33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
LED_A_N[4] / PRTSWP[4]
LED_B_N[3] / GANG_EN
LED_B_N[2] / BOOST[1]
HS_IND / CFG_SEL[1]
PRTPWR[6]
PRTPWR[7]
VBUS_DET
RESET_N
OCS_N[6]
OCS_N[7]
OCS_N[5]
VDD33
LED_B_N[4] LED_A_N[5] / PRTSWP[5] PRTPWR[5] PRTPWR[1] OCS_N[1] OCS_N[2] PRTPWR[2] CRFILT VDD33 PRTPWR[3] OCS_N[3] OCS_N[4] PRTPWR[4] TEST LED_B_N[5] LED_A_N[6] / PRTSWP[6]
SMSC USB2517/17i (Top View QFN-64)
VDD33
USBDP_DN[1] / PRT_DIS_P[1]
USBDP_DN[2] / PRT_DIS_P[2]
USBDP_DN[3] / PRT_DIS_P[3]
USBDP_DN[4] / PRT_DIS_P[4]
VDD33
USBDP_DN[5] / PRT_DIS_P[5]
CFG_SEL[2]
LED_A_N[7] / PRTSWP[7]
LED_B_N[7]
USBDM_DN[1] / PRT_DIS_M[1]
USBDM_DN[2] / PRT_DIS_M[2]
USBDM_DN[3] / PRT_DIS_M[3]
USBDM_DN[4] / PRT_DIS_M[4]
Indicates pins on the bottom of the device.
Figure 5.6 7-Port 64-Pin QFN
SMSC USB251x
17
USBDM_DN[5] / PRT_DIS_M[5]
LED_B_N[6]
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 5.1 Pin List in Alphabetical Order PIN NUMBERS 36 QFN USB2512 USB2512i USB2512A USB2512Ai USB2512B USB2512Bi USB2513B USB2513Bi USB2514B USB2514Bi USB2513 USB2513i USB2514 USB2514i 48QFN USB2513 USB2514 64 QFN USB2517 USB2517i 50 48 41 42 13 61 25 34 42 51 49 47 13 Enhanced Indicator Port LED Local Power Detection
18
SYMBOL BC_EN[1] BC_EN[2] BC_EN[3] BC_EN[4] BOOST[0] BOOST[1] CFG_SEL[0] CFG_SEL[1] CFG_SEL[2] CLKIN CRFILT GANG_EN
NAME Battery Charging Strap Option
-
12 16 -
-
12 16 18 -
-
12 16 18 20 36 24 31 32 33 45 17 22
-
PHY Boost Strapping Option Configuration Programming Selection External Clock Input Core Regulator Filter Capacitor Ganged Port Power Strap Option Exposed Pad Tied to Ground (VSS) Hi-Speed Upstream Port Indicator Port LED Indicator
24 25 33 14 -
Ground Pad
ePad
HS_IND
25
32
LED_A_N[1] LED_A_N[2] LED_A_N[3] LED_A_N[4] LED_A_N[5] LED_A_N[6] LED_A_N[7] LED_B_N[1] LED_B_N[2] LED_B_N[3] LED_B_N[4] LED_B_N[5] LED_B_N[6] LED_B_N[7] LOCAL_PWR
-
37 25 23
33 31 17 15
36 24 22 12
50 48 34 32 18 16 14
28
39
45
Revision 1.0 (3-11-09)
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 5.1 Pin List in Alphabetical Order (continued) PIN NUMBERS 36 QFN USB2512 USB2512i USB2512A USB2512Ai USB2512B USB2512Bi USB2513B USB2513Bi USB2514B USB2514Bi USB2513 USB2513i USB2514 USB2514i 48QFN USB2513 USB2514 64 QFN USB2517 USB2517i 39 29 16 20 19 PLL Regulator Filter Capacitor Downstream Port Disable Strap Option Port Disable 9 2 4 7 9 12 54 56 8 34 1 3 6 8 11 53 55 46 21 26 28 45 40 28 27 22 21 35 38 37 62
SYMBOL NC NC NC NC NC NC NC NC NON_REM[0] NON_REM[1] OCS_N[1] OCS_N[2] OCS_N[3] OCS_N[4] OCS_N[5] OCS_N[6] OCS_N[7] PLLFILT PRT_DIS_M[1] PRT_DIS_M[2] PRT_DIS_M[3] PRT_DIS_M[4] PRT_DIS_M[5] PRT_DIS_M[6] PRT_DIS_M[7] PRT_DIS_P[1] PRT_DIS_P[2] PRT_DIS_P[3] PRT_DIS_P[4] PRT_DIS_P[5] PRT_DIS_P[6] PRT_DIS_P[7]
NAME No Connect
6 7 18 19 8 9 20 21
28 22 13 17
8 9 11 12 13 27 28 -
11
NonRemovable Port Strap Option Over-Current Sense -
SMSC USB251x
19
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 5.1 Pin List in Alphabetical Order (continued) PIN NUMBERS 36 QFN USB2512 USB2512i USB2512A USB2512Ai USB2512B USB2512Bi USB2513B USB2513Bi USB2514B USB2514Bi USB2513 USB2513i USB2514 USB2514i 48QFN USB2513 USB2514 64 QFN USB2517 USB2517i 29 26 23 27 20 30 39 36 38 51 49 47 13 USB Transceiver Bias Reset Input Serial Clock Serial Data Signal Select 48 MHz Clock Input System Management Bus Clock Server Message Block Data Signal Active/Suspend Status Indicator Test Pin USB Bus Data 35 47 33 31 17 15 63 43 41 40 41 40 45 19 58 59
SYMBOL PRTPWR[1] PRTPWR[2] PRTPWR[3] PRTPWR[4] PRTPWR[5] PRTPWR[6] PRTPWR[7] PRTPWR_POL
NAME USB Port Power Enable
12 16 18 20 -
15 19 21
Port Power Polarity Strapping Port Swap Strapping Option
-
PRTSWP[1] PRTSWP[2] PRTSWP[3] PRTSWP[4] PRTSWP[5] PRTSWP[6] PRTSWP[7] RBIAS
-
37 25 23
RESET_N SCL SDA
26 24 22 24
34 31 29 40 31
SEL48 SMBCLK
SMBDATA
22
29
SUSP_IND TEST USBDM_UP USBDP_UP
28 11 30 31
39 14 42 43
Revision 1.0 (3-11-09)
20
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 5.1 Pin List in Alphabetical Order (continued) PIN NUMBERS 36 QFN USB2512 USB2512i USB2512A USB2512Ai USB2512B USB2512Bi USB2513B USB2513Bi USB2514B USB2514Bi USB2513 USB2513i USB2514 USB2514i 48QFN USB2513 USB2514 64 QFN USB2517 USB2517i 8 11 53 55 2 4 Upstream VBUS Power Detection 3.3 V Power 15 23 29 36 Crystal Input Crystal Output 33 32 45 44 27 35 9 7 9 12 54 56 44 24 46 52 57 64 61 60
SYMBOL USBDM_DN[1] USBDM_DN[2] USBDM_DN[3] USBDM_DN[4] USBDM_DN[5] USBDM_DN[6] USBDM_DN[7] USBDP_DN[1] USBDP_DN[2] USBDP_DN[3] USBDP_DN[4] USBDP_DN[5] USBDP_DN[6] USBDP_DN[7] VBUS_DET
NAME Hi-Speed USB Data
1 3 8 6 -
VDD33 VDD33 VDD33 VDD33 VDD33 VDD33 VDD33 XTALIN XTALOUT
5 10 18 30 41 48
SMSC USB251x
21
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
5.2
USB251x Pin Descriptions (Grouped by Function)
Table 5.2 USB251x Pin Descriptions BUFFER TYPE
SYMBOL
DESCRIPTION UPSTREAM USB 2.0 INTERFACES
USBDM_UP USBDP_UP
IO-U
USB Data These pins connect to the upstream USB bus data signals (host, port, or upstream hub).
VBUS_DET
I/O12
Detect Upstream VBUS Power Detects state of Upstream VBUS power. The SMSC hub monitors VBUS_DET to determine when to assert the internal D+ pull-up resistor which signals a connect event. When designing a detachable hub, this pin should be connected to VBUS on the upstream port via a 2 to 1 voltage divider. For self-powered applications with a permanently attached host, this pin must be connected to 3.3 V (typically VDD33). DOWNSTREAM USB 2.0 INTERFACES
USBDP_DN[x:1]/ PRT_DIS_P[x:1]
IO-U
Hi-Speed USB Data These pins connect to the downstream USB peripheral devices attached to the hub's port. To disable, pull up with a 10 K resistor to 3.3 V. Downstream Port Disable Strap Option If this strap is enabled by package and configuration settings (see Table 8.1, "Hub Configuration Options"), then this pin will be sampled at RESET_N negation to determine if the port is disabled. To disable a port, pull up both PRT_DIS_M[x:1] and PRT_DIS_P[x:1] pins corresponding to the port numbers.
USBDM_DN[x:1]/ PRT_DIS_M[x:1]
PRTPWR[x:1] /
O12
USB Power Enable Enables power to USB peripheral devices downstream. When PRTPWR_POL pin is unavailable, the hub supports active high power controllers only. When PRTPWR_POL pin is available, the active signal level of the PRTPWR pins is determined by the power polarity strapping function of the PRTPWR_POL pin.
BC_EN[x]
IPD
Battery Charging Strap Option *This feature is only available on USB251xB/Bi. If this strap is enabled by package and configuration settings, (see Table 8.1, "Hub Configuration Options"), this pin will be sampled at RESET_N negation to determine if ports [x:1] support the battery charging protocol (and thus the supporting external port power controllers) that would enable a device to draw the currents per the USB battery charging specification. BC_EN[x] = 1: Battery charging feature is supported for port x BC_EN[x] = 0: Battery charging feature is not supported for port x
Revision 1.0 (3-11-09)
22
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 5.2 USB251x Pin Descriptions (continued) BUFFER TYPE
SYMBOL
DESCRIPTION
DOWNSTREAM USB 2.0 INTERFACES (continued) LED_A_N[x:1] / I/O12 Port LED Indicators This pin will be active low when LED support is enabled via EEPROM or SMBus. PRTSWP[x:1] Port Swap Strapping Option If this strap is enabled by package and configuration settings (see Table 8.1, "Hub Configuration Options"), this pin will be sampled at RESET_N negation to determine the electrical connection polarity of the downstream USB port pins (USB_DP and USB_DM). Also, the active state of the LED will be determined as follows: `0' = Port polarity is normal, LED is active high. `1' = Port polarity (USB_DP and USB_DM) is swapped, LED is active low. LED_B_N[7:4] I/O12 Enhanced Indicator Port LED for ports 4-7 Enhanced indicator LED for ports 4-7. This pin will be active low when LED support is enabled via EEPROM or SMBus. LED_B_N[3] / GANG_EN I/O12 Enhanced Indicator Port LED for Port 3 Ganged Power and Over-current strap option This signal selects between ganged or individual port power and over-current sensing. If this strap is enabled by package and configuration settings (see Table 8.1, "Hub Configuration Options"), this pin will be sampled at RESET_N negation to determine the mode as follows: `0' = Individual sensing and switching, LED_B_N[3] is active high. `1' = Ganged sensing and switching, LED_B_N[3] is active low.
SMSC USB251x
23
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 5.2 USB251x Pin Descriptions (continued) BUFFER TYPE
SYMBOL
DESCRIPTION
DOWNSTREAM USB 2.0 INTERFACES (continued) LED_B_N[2:1] / I/O12 Enhanced Indicator Port LED for ports 1 and 2 Enhanced indicator LED for ports 1 and 2. This pin will be active low when LED support is enabled via EEPROM or SMBus. BOOST[1:0] If this strap option is enabled by package and configuration settings (see Table 8.1, "Hub Configuration Options"), this pin will be sampled at RESET_N negation to determine if all PHY ports (upstream and downstream) operate at a normal or boosted electrical level. Also, the active state of the LEDs will be determined as follows: See Section 8.2.1.27, "Register F6h: Boost_Up," on page 45 and Section 8.2.1.29, "Register F8h: Boost_4:0," on page 47 for more information. BOOST[1:0] = BOOST_IOUT[1:0] BOOST[1:0] = `00', LED_B_N[2] is active high, LED_B_N[1] is active high. BOOST[1:0] = `01', LED_B_N[2] is active high, LED_B_N[1] is active low. BOOST[1:0] = `10', LED_B_N[2] is active low, LED_B_N[1] is active high. BOOST[1:0] = `11', LED_B_N[2] is active low, LED_B_N[1] is active low. PRTPWR_POL IPU Port Power Polarity Strapping Port Power Polarity strapping determination for the active signal polarity of the [x:1]PRTPWR pins. While RESET_N is asserted, the logic state of this pin will (through the use of internal combinatorial logic) determine the active state of the PRTPWR pins in order to ensure that downstream port power is not inadvertently enabled to inactive ports during a hardware reset. When RESET_N is negated, the logic value will be latched internally, and will retain the active signal polarity for the PRTPWR[x:1] pins. `1' = PRTPWR[x:1]_P/N pins have an active `high' polarity `0' = PRTPWR[x:1]_P/N pins have an active `low' polarity Warning: Active low port power controllers may glitch the downstream port power when the system power is first applied. Care should be taken when designing with active low components. When PRTPWR_POL is not an available pin on the package, the hub will only support active high power controllers. OCS_N[x:1] IPU Over-Current Sense Input from external current monitor indicating an over-current condition. RBIAS I-R USB Transceiver Bias A 12.0 k (+/- 1%) resistor is attached from ground to this pin to set the transceiver's internal bias settings.
Revision 1.0 (3-11-09)
24
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 5.2 USB251x Pin Descriptions (continued) BUFFER TYPE
SYMBOL
DESCRIPTION SERIAL PORT INTERFACES
SDA / SMBDATA / NON_REM[1]
I/OSD12
Serial Data signal (SDA) Server Message Block Data signal (SMBDATA) Non-removable port strap option If this strap is enabled by package and configuration settings (see Table 8.1), this pin will be sampled (in conjunction with LOCAL_PWR / SUSP_IND / NON_REM[0]) at RESET_N negation to determine if ports [7:1] contain permanently attached (non-removable) devices: NON_REM[1:0] = `00', All ports are removable. NON_REM[1:0] = `01', Port 1 is non-removable. NON_REM[1:0] = `10', Ports 1 & 2 are non-removable. NON_REM[1:0] = `11', When available, ports 1 2 & 3 are non-removable.
RESET_N
IS
RESET Input The system can reset the chip by driving this input low. The minimum active low pulse is 1 s.
SCL / SMBCLK / CFG_SEL[0]
I/OSD12
Serial Clock (SCL) System Management Bus Clock (SMBCLK) Configuration Select: The logic state of this multifunction pin is internally latched on the rising edge of RESET_N (RESET_N negation), and will determine the hub configuration method as described in Table 8.1, "Hub Configuration Options".
HS_IND /
I/O12
Hi-Speed Upstream Port Indicator HS_IND: Hi-speed Indicator for upstream port connection speed. The active state of the LED will be determined as follows: CFG_SEL[1] = `0', HS_IND is active high, CFG_SEL[1] = `1', HS_IND is active low, `Asserted' = the hub is connected at HS `Negated' = the hub is connected at FS
CFG_SEL[1]
Configuration Programming Select CFG_SEL[1]: The logic state of this pin is internally latched on the rising edge of RESET_N (RESET_N negation), and will determine the hub configuration method as described in Table 8.1, "Hub Configuration Options".
CFG_SEL[2]
I
Configuration Programming Select The logic state of this pin is internally latched on the rising edge of RESET_N (RESET_N negation), and will determine the hub configuration method as described in Table 8.1, "Hub Configuration Options". When the CFG_SEL[2] pin is unavailable, then the logic is internally tied to `0'.
SMSC USB251x
25
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 5.2 USB251x Pin Descriptions (continued) BUFFER TYPE MISC XTALIN ICLKx Crystal Input 24 MHz crystal This pin connects to either one terminal of the crystal or to an external 24 MHz clock when a crystal is not used. CLKIN External Clock Input This pin connects to either one terminal of the crystal or to an external 24 MHz clock when a crystal is not used. XTALOUT OCLKx Crystal Output 24 MHz Crystal This is the other terminal of the crystal, or a no connect pin, when an external clock source is used to drive XTALIN/CLKIN. SUSP_IND / I/O Active/Suspend status LED Suspend Indicator: Indicates USB state of the hub. `negated' = Unconfigured, or configured and in USB Suspend `asserted' = the hub is configured, and is active (i.e., not in suspend) LOCAL_PWR / Local Power: Detects availability of local self-power source. Low = Self/local power source is NOT available (i.e., the hub gets all power from Upstream USB VBus). High = Self/local power source is available. NON_REM[0] NON_REM[0] Strap Option: If this strap is enabled by package and configuration settings (see Table 8.1, "Hub Configuration Options"), this pin will be sampled (in conjunction with NON_REM[1]) at RESET_N negation to determine if ports [x:1] contain permanently attached (non-removable) devices. Also, the active state of the LED will be determined as follows: NON_REM[1:0] = `00', All ports are removable, and the LED is active high NON_REM[1:0] = `01', Port 1 is non-removable, and the LED is active low NON_REM[1:0] = `10', Ports 1 & 2 are non-removable, and the LED is active high NON_REM[1:0] = `11', When available, ports 1, 2 & 3 are non-removable, and the LED is active low TEST IPD TEST pin User must treat as a no connect pin or connect to ground. No trace or signal should be routed or attached to this pin.
SYMBOL
DESCRIPTION
Revision 1.0 (3-11-09)
26
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 5.2 USB251x Pin Descriptions (continued) BUFFER TYPE I 48 MHz Clock Input Selection 48 MHz external input clock select. When the hub is clocked from an external clock source, this pin selects either 24 MHz or 48 MHz mode. `0' = 24 MHz `1' = 48 MHz POWER, GROUND, and NO CONNECTS CRFILT VDD Core Regulator Filter Capacitor This pin must have a 1.0 F (or greater) 20% (ESR <0.1 VSS. VDD33 PLLFILT 3.3 V Power PLL Regulator Filter Capacitor This pin must have a 1.0 F (or greater) 20% (ESR <0.1 VSS. VSS Ground Pad / ePad The package slug is the only VSS for the device and must be tied to ground with multiple vias. NC No Connect No signal or trace should be routed or attached to these pins.
SYMBOL SEL48
DESCRIPTION
) capacitor to
) capacitor to
5.3
Buffer Type Descriptions
Table 5.3 Buffer Type Descriptions BUFFER I I/O IPD IPU IS O12 Input. Input/Output. Input with internal weak pull-down resistor. Input with internal weak pull-up resistor. Input with Schmitt trigger. Output 12 mA. DESCRIPTION
SMSC USB251x
27
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 5.3 Buffer Type Descriptions (continued) BUFFER I/O12 I/OSD12 DESCRIPTION Input/Output buffer with 12 mA sink and 12 mA source. Open drain with Schmitt trigger and 12 mA sink. Meets the I2C-Bus specification, version 2.1, requirements. XTAL clock input. XTAL clock output. RBIAS. Analog Input/Output defined in USB specification.
ICLKx OCLKx I-R I/O-U
Revision 1.0 (3-11-09)
28
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Chapter 6 LED Usage Description
6.1 LED Functionality
USB2513 and USB2514 (48-pin QFN only) and USB2517/17i SMSC hubs support two different (mutually exclusive) LED modes. The `x' represents the number of downstream ports. The USB mode provides up to 14 LED's that conform to the USB 2.0 specification functional requirements for Green and Amber LED's. The LED mode "speed indicator" provides the downstream device connection speed.
6.1.1
USB Mode 14-Wire
The LED_A_N[x:1] pins are used to provide Green LED support as defined in the USB 2.0 specification. The LED_B_N[x:1] pins are used to provide Amber LED support as defined in the USB 2.0 specification. The USB specification defines the LED's as port status indicators for the downstream ports. Please note that no indication of port speed is possible in this mode. The pins are utilized as follows: LED_A_N[x:1] = Port [x:1] green LED LED_B_N[x:1] = Port [x:1] amber LED
6.1.2
LED Mode Speed Indication
The LED_A[x:1]_N pins are used to provide connection status as well as port speed by using dual color LED's. This scheme requires that the LED's be in the same package, and that a third color is produced so that the user perceives both LED's as being driven "simultaneously". The LED_A[x:1] pins used in this mode are connected to x number of dual color LED's (each LED pair in a single package). These pins indicate the USB speed of each attached downstream device. Each dual color LED provides two separate colors (commonly Green and Red). If each of these separate colors are pulsed on and off at a rapid rate, a user will see a third color (in this example, Orange). Using this method, 4 different "color" states are possible (Green, Red, Orange, and Off).
3.3 V
General Purpose Diode Connection to other Dual Color Diodes
D1A (Green LED)
Hub LED pin
Current Limiting Resistor
D1B (Red LED)
Figure 6.1 Dual Color LED Implementation Example
SMSC USB251x 29 Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Figure 6.1 shows a simple example of how this LED circuit will be implemented. The circuit should be replicated for each of the x LED pins on the SMSC hub. In this circuit, when the LED pin is driven to a logic low state, the Green LED will light up. When the LED pin is driven to a Logic High state the Red LED will light up. When a 1 KHz square wave is driven out on the LED pin, the Green and Red LED's will both alternately light up giving the effect of the color Orange. When nothing is driven out on the LED pin (i.e. the pin floats to a "tri-state" condition), neither the Green nor Red LED will light up, this is the "Off" state. The assignment is as follows: LED_A_N[x:1] = LED D[x:1] (Downstream Port [x:1]) The usage is as follows: LED_A_N[x] Driven to Logic Low = LS device attached (Green LED) LED_A_N[x] Driven to Logic High = FS device attached (Red LED) LED_A_N[x] Pulsed @ 1 KHz = HS device attached (Orange color by pulsing Red & Green). LED_A_N[x] is tri-state= No devices are attached, or the hub is in suspend, LED's are off.
Revision 1.0 (3-11-09)
30
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Chapter 7 Battery Charging Support
7.1 General Description
The battery charging feature is only available in USB251xB (which represents USB2512B/3B/4B and USB2512Bi/3Bi/4Bi hub family products). Any one or combination of downstream ports on the USB251xB hub can be configured to support battery charging. The SMSC hub provides support for battery charging devices on a per port basis in compliance with the USB Battery Charging specification, version 1.1. The hub can be configured to individually enable each downstream port for battery charging support either via pin strapping as illustrated in Figure 7.1 or by setting the corresponding configuration bits via EEPROM or SMBus.
3.3 V
5V
RSTRAP
USB Port Power Controller IN
USB251xB/xBi
PRTPWR[x] OCS_N[x]
EN FLAG
VBUS
Note: RSTRAP enables battery charging.
Figure 7.1 Battery Charging via External Power Supply
7.2
USB Battery Charging
A downstream port enabled for battery charging turns on port power as soon as the configuration process has completed. The hub does not need to be enumerated nor does VBUS_DET need to be asserted for the port power to be enabled. These conditions allow battery charging in S3, S4 and S5 system power states as well as in the fully operational state. The USB Battery Charging specification does not interfere with standard USB operation, which allows a device to perform battery charging at any time. A port that supports battery charging must be able to support 1.5 amps of current on VBUS. Standard USB port power controllers typically only allow for 0.8 amps of current before detecting an over-current condition. Therefore, the 5 volt power supply, port power controller or over-current protection devices must be chosen to handle the larger current demand compared to standard USB hub designs.
7.2.1
Special Behavior of PRTPWR Pins
The SMSC hub enables VBUS by asserting the port power (PRTPWR) pin as soon as the hardware configuration process has completed. If the port detects an over-current condition, PRTPWR will be turned off to protect the circuitry from overloading. If an over-current condition is detected when the hub is not enumerated, PRTPWR can only be turned on from the host or if RESET_N is toggled. These
SMSC USB251x
31
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
behaviors provide battery charging even when the hub is not enumerated and protect the hub from sustained short circuit conditions. If the short circuit condition persists when the hub is plugged into a host system the user is notified that a port has an over-current condition. Otherwise the PRTPWR is turned on by the host system and the port operates normally.
7.3
Battery Charging Configuration
Configuration of ports to support battery charging is done through a strap option on the corresponding ports PRTPWR[x] / BC_EN[x] pin. see Chapter 5, Pin Descriptions, or through EEPROM or SMBus configuration load.
7.3.1
Battery Charging enabled via EEPROM or SMBus
Register memory map location 0xD0 is allocated for battery charging support. The "Battery Charging" register at location 0xD0 starting from Bit 1 enables battery charging for each downstream port when asserted. Bit 1 represents port 1 and so on. Each port with battery charging enabled asserts the corresponding PRTPWR[x:0] pin.
Revision 1.0 (3-11-09)
32
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Chapter 8 Configuration Options
8.1 Hub
SMSC's USB 2.0 hub is fully specification compliant to the Universal Serial Bus specification, version 2.0, April 27, 2000 (12/7/2000 and 5/28/2002 Errata). Please reference Chapter 10 (Hub specification) for general details regarding hub operation and functionality. The hub provides 1 Transaction Translator (TT) that is shared by both downstream ports (defined as Single-TT configuration), The TT contains 4 non-periodic buffers.
8.1.1
Hub Configuration Options
The SMSC hub supports a large number of features (some are mutually exclusive), and must be configured in order to correctly function when attached to a USB host controller. There are three principal ways to configure the hub: SMBus, EEPROM, or by internal default settings (with or without configuration option over-rides). In all cases, the configuration method will be determined by the CFG_SEL[2], CFG_SEL[1] and CFG_SEL[0] pins immediately after RESET_N negation. Please refer to Table 8.1, "Hub Configuration Options" for more information.
8.1.2
SMBus or EEPROM Interface
Table 8.1 Hub Configuration Options CFG_SEL[2] 0 CFG_SEL[1] 0 CFG_SEL[0] 0 DESCRIPTION Internal Default Configuration without any over-rides Strap options enabled Self-powered operation enabled LED mode = Speed (when available on package) Individual power switching Individual over-current sensing Configured as an SMBus slave for external download of user-defined descriptors Strap options disabled All settings are controlled by registers as set by the user Internal Default Configuration Strap options enabled Bus-powered operation LED mode = USB (when available on package) Individual power switching Individual over-current sensing 2-Wire I2C EEPROMS are supported Strap options disabled All settings are controlled by registers as set by the user
0
0
1
0
1
0
0
1
1
SMSC USB251x
33
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 8.1 Hub Configuration Options (continued) CFG_SEL[2] 1 CFG_SEL[1] 0 CFG_SEL[0] 0 DESCRIPTION Internal Default Configuration with the following over-rides Dynamic power-switching enabled Strap options disabled LED mode = Speed (when available on package) Individual power switching Individual over-current sensing Internal Default Configuration with the following over-rides Dynamic setting enabled Strap options disabled LED mode = USB (when available on package) Individual power switching Individual over-current sensing Internal Default Configuration with the following over-rides Strap options disabled LED mode = Speed (when available on package) Individual power switching Individual over-current sensing Internal Default Configuration with the following over-rides Strap options disabled LED mode = USB (when available on package) Ganged port power switching Ganged over-current sensing
1
0
1
1
1
0
1
1
1
Note: When the CFG_SEL[2] pin is unavailable, then the logic is internally tied to `0'.
8.1.2.1
Power Switching Polarity
When the PRTPWR_POL pin is unavailable (3 and 4 port, 48-pin packages only), the hub only supports "active high" port power controllers.
8.1.3
VBus Detect
According to Section 7.2.1 of the USB 2.0 specification, a downstream port can never provide power to its D+ or D- pull-up resistors unless the upstream port's VBUS is in the asserted (powered) state. The VBUS_DET pin on the hub monitors the state of the upstream VBUS signal and will not pull-up the D+ resistor if VBUS is not active. If VBUS goes from an active to an inactive state (Not Powered), the hub will remove power from the D+ pull-up resistor within 10 seconds.
8.2
EEPROM Interface
The SMSC hub can be configured via a 2-wire (I2C) EEPROM (256x8). (Please see Table 8.1, "Hub Configuration Options" for specific details on how to enable configuration via an I2C EEPROM). The internal state-machine will (when configured for EEPROM support) read the external EEPROM for configuration data. The hub will then "attach" to the upstream USB host. Note: The hub does not have the capacity to write, or "Program," an external EEPROM. The hub only has the capability to read external EEPROMs. The external eeprom will be read (even if it is blank or non-populated), and the hub will be "configured" with the values that are read.
Revision 1.0 (3-11-09)
34
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Please see the Internal Register Set (Common to EEPROM and SMBus) for a list of the available data fields. Please visit www.smsc.com/ftpdocs/usb.html to locate the configuration utility for the hub EEPROM data. Select the "e2prommap.msi" link to download the tool. Each register has R/W capability. SMBUS and EEPROM Reset Values are 0x00. Reserved registers should be written to `0' unless otherwise specified. Contents read should be ignored (such as the case of `R' in the table below).
8.2.1
Internal Register Set (Common to EEPROM and SMBus)
Table 8.2 Internal Default, EEPROM and SMBus Register Memory Map DEFAULT ROM VALUES (HEXIDECIMAL) USB2512B/12Bi USB2513B/13Bi USB2512A/12Ai USB2514B/14Bi 14 USB2513/13i USB2514/14i USB2517/17i 17 00 00
ADDRESS 00h 01h 02h 03h 04h 05h 06h 07h 08h 09h 0Ah 0Bh 0Ch 0Dh 0Eh 0Fh 10h 11h 12h 13h 14h 15h 16h-53h
SMSC USB251x
REGISTER NAME Vendor ID LSB Vendor ID MSB Product ID LSB Product ID MSB Device ID LSB Device ID MSB Configuration Data Byte 1 Configuration Data Byte 2 Configuration Data Byte 3 Non-Removable Devices Port Disable (Self) Port Disable (Bus) Max Power (Self) Max Power (Bus) Hub Controller Max Current (Self) Hub Controller Max Current (Bus) Power-on Time Language ID High Language ID Low Manufacturer String Length Product String Length Serial String Length Manufacturer String
35
USB2512/12i
24 04 12 13 14 12 25 00 00 8B 20 02 00 08 08 01 32 01 32 32 00 R R R R R 00 00 00 00 00
Revision 1.0 (3-11-09)
13
A0 0A
00 00 9B
A0 0B
00 00
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 8.2 Internal Default, EEPROM and SMBus Register Memory Map (continued) DEFAULT ROM VALUES (HEXIDECIMAL) USB2512B/12Bi USB2513B/13Bi USB2514B/14Bi 00 00 00 00 00 00 00 00 00 R 00 R R 00 R 00 00 00 R 00 R R 00 USB2512A/12Ai USB2513/13i USB2514/14i USB2517/17i
ADDRESS 54h-91h 92h-CFh D0h E0h F5h F6h F7h F8h F9h FAh FBh FCh FDh FEh FFh
REGISTER NAME Product String Serial String Battery Charging Enable Reserved Reserved Boost_Up Boost_7:5 Boost_x:0 Reserved Port Swap Port Map 12 Port Map 34 Port Map 56 Port Map 7 Status/Command Note: SMBus register only
USB2512/12i R R
00 00 R
8.2.1.1
BIT NUMBER 7:0
Register 00h: Vendor ID (LSB)
BIT NAME VID_LSB
DESCRIPTION Least Significant Byte of the Vendor ID. This is a 16-bit value that uniquely identifies the Vendor of the user device (assigned by USB-Interface Forum). This field is set by the OEM using either the SMBus or EEPROM interface options.
8.2.1.2
BIT NUMBER 7:0
Register 01h: Vendor ID (MSB)
BIT NAME VID_MSB
DESCRIPTION Most Significant Byte of the Vendor ID. This is a 16-bit value that uniquely identifies the Vendor of the user device (assigned by USB-Interface Forum). This field is set by the OEM using either the SMBus or EEPROM interface options.
Revision 1.0 (3-11-09)
36
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.3
BIT NUMBER 7:0
Register 02h: Product ID (LSB)
BIT NAME PID_LSB
DESCRIPTION Least Significant Byte of the Product ID. This is a 16-bit value that the Vendor can assign that uniquely identifies this particular product (assigned by OEM). This field is set by the OEM using either the SMBus or EEPROM interface options.
8.2.1.4
BIT NUMBER 7:0
Register 03h: Product ID (MSB)
BIT NAME PID_MSB
DESCRIPTION Most Significant Byte of the Product ID. This is a 16-bit value that the Vendor can assign that uniquely identifies this particular product (assigned by OEM). This field is set by the OEM using either the SMBus or EEPROM interface options.
8.2.1.5
BIT NUMBER 7:0
Register 04h: Device ID (LSB)
BIT NAME DID_LSB
DESCRIPTION Least Significant Byte of the Device ID. This is a 16-bit device release number in BCD format (assigned by OEM). This field is set by the OEM using either the SMBus or EEPROM interface options.
8.2.1.6
BIT NUMBER 7:0
Register 05h: Device ID (MSB)
BIT NAME DID_MSB
DESCRIPTION Most Significant Byte of the Device ID. This is a 16-bit device release number in BCD format (assigned by OEM). This field is set by the OEM using either the SMBus or EEPROM interface options.
SMSC USB251x
37
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.7
BIT NUMBER 7
Register 06h: CONFIG_BYTE_1
BIT NAME SELF_BUS_PWR
DESCRIPTION Self or Bus Power: Selects between Self- and Bus-Powered operation. The hub is either self-powered (draws less than 2 mA of upstream bus power) or bus-powered (limited to a 100 mA maximum of upstream power prior to being configured by the host controller). When configured as a bus-powered device, the SMSC hub consumes less than 100 mA of current prior to being configured. After configuration, the buspowered SMSC hub (along with all associated hub circuitry, any embedded devices if part of a compound device, and 100 mA per externally available downstream port) must consume no more than 500 mA of upstream VBUS current. The current consumption is system dependent, and the OEM must ensure that the USB 2.0 specifications are not violated. When configured as a self-powered device, <1 mA of upstream VBUS current is consumed and all ports are available, with each port being capable of sourcing 500 mA of current. This field is set by the OEM using either the SMBus or EEPROM interface options. Please see the description under dynamic power for the self-/bus- power functionality when dynamic power switching is enabled. '0' = Bus-powered operation '1' = Self-powered operation If dynamic power switching is enabled, this bit is ignored and the LOCAL_PWR pin is used to determine if the hub is operating from self or bus power.
6 5
Reserved HS_DISABLE
Reserved Hi-speed Disable: Disables the capability to attach as either a Hi-/Full-Speed device, and forces attachment as Full-Speed only (i.e. no Hi-Speed support). '0' = Hi-/Full-speed `1' = Full-speed-Only (Hi-speed disabled!)
4
MTT_ENABLE
Multi-TT enable: Enables one transaction translator per port operation. (Not available on the USB2512A/12Ai.) Selects between a mode where only one transaction translator is available for all ports (Single-TT), or each port gets a dedicated transaction translator (Multi-TT). '0' = Single TT for all ports `1' = One TT per port (when multiple TT's are supported)
3
EOP_DISABLE
EOP Disable: Disables EOP generation at EOF1 when in Full-Speed mode. During FS operation only, this permits the hub to send EOP if no downstream traffic is detected at EOF1. See Section 11.3.1 of the USB 2.0 specification for additional details. '0' = EOP generation is normal `1' = EOP generation is disabled
Revision 1.0 (3-11-09)
38
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
BIT NUMBER 2:1
BIT NAME CURRENT_SNS
DESCRIPTION Over-Current Sense: Selects current sensing on a port-by-port basis, all ports ganged, or none (only for bus-powered hubs). The ability to support current sensing on a port or ganged basis is hardware implementation dependent. `00' = Ganged sensing (all ports together) `01' = Individual (port-by-port) `1x' = Over-current sensing not supported (must only be used with buspowered configurations!)
0
PORT_PWR
Port Power Switching: Enables power switching on all ports simultaneously (ganged), or port power is individually switched on and off on a port- by-port basis (individual). The ability to support power enabling on a port or ganged basis is hardware implementation dependent. `0' = Ganged switching (all ports together) `1' = Individual port-by-port switching
8.2.1.8
BIT NUMBER 7
Register 07h: Configuration Data Byte 2
BIT NAME DYNAMIC
DESCRIPTION Dynamic Power Enable: Controls the ability of the hub to automatically change from self-powered operation to bus-powered operation if the local power source is removed or is unavailable (and from bus-powered to selfpowered if the local power source is restored). When dynamic power switching is enabled, the hub detects the availability of a local power source by monitoring the external LOCAL_PWR pin. If the hub detects a change in power source availability, the hub immediately disconnects and removes power from all downstream devices and disconnects the upstream port. The hub will then re-attach to the upstream port as either a bus-powered hub (if local-power is unavailable) or a selfpowered hub (if local power is available). `0' = No dynamic auto-switching `1' = Dynamic auto-switching capable
6 5:4
Reserved OC_TIMER
Reserved OverCurrent Timer: Over-current Timer delay. `00' = 0.1 ms `01' = 4.0 ms `10' = 8.0 ms `11' = 16.0 ms
3
COMPOUND
Compound Device: Allows OEM to indicate that the hub is part of a compound (see the USB specification for definition) device. The applicable port(s) must also be defined as having a "Non-Removable Device". Note: When configured via strapping options, declaring a port as nonremovable automatically causes the hub controller to report that it is part of a compound device.
`0' = No `1' = Yes, The hub is part of a compound device 2:0 Reserved Reserved
SMSC USB251x
39
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.9
BIT NUMBER 7:4 3
Register 08h: Configuration Data Byte 3
BIT NAME Reserved PRTMAP_EN Reserved
DESCRIPTION
Port mapping enable: Selects the method used by the hub to assign port numbers and disable ports. `0' = Standard mode `1' = Port mapping mode
2:1
LED_MODE
LED Mode Selection: The LED_A[x:1]_N and LED_B[x:1]_N pins support several different modes of operation (depending upon OEM implementation of the LED circuit). `00' = USB Mode `01' = Speed Indication Mode `10' = Same as `00', USB Mode `11' = Same as `00', USB Mode Warning: Do not enable an LED mode that requires LED pins that are not available in the specific package being used in the implementation. Note: The hub will only report that it supports LED's to the host when USB mode is selected. All other modes will be reported as No LED Support.
0
STRING_EN
Enables String Descriptor Support `0' = String support disabled `1' = String support enabled
8.2.1.10
BIT NUMBER 7:0
Register 09h: Non-Removable Device
BIT NAME NR_DEVICE
DESCRIPTION Non-removable Device: Indicates which port(s) include non-removable devices. `0' = port is removable `1' = port is non-removable Informs the host if one of the active ports has a permanent device that is undetachable from the hub. (Note: The device must provide its own descriptor data.) When using the internal default option, the NON_REM[1:0] pins will designate the appropriate ports as being non- removable. Bit Bit Bit Bit Bit Bit Bit Bit 7= 6= 5= 4= 3= 2= 1= 0= Controls Port Controls Port Controls Port Controls Port Controls Port Controls Port Controls Port Reserved 7 6 5 4 3 2 1
Revision 1.0 (3-11-09)
40
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.11
BIT NUMBER 7:0
Register 0Ah: Port Disable For Self-Powered Operation
BIT NAME PORT_DIS_SP
DESCRIPTION Port Disable Self-Powered: Disables 1 or more ports. 0 = Port is available 1 = Port is disabled During self-powered operation when mapping mode is disabled (PRTMAP_EN='0'), this selects the ports which will be permanently disabled, and are not available to be enabled or enumerated by a host controller. The ports can be disabled in any order, the internal logic will automatically report the correct number of enabled ports to the USB host, and will reorder the active ports in order to ensure proper function. When using the internal default option, the PRT_DIS_P[x:1] and PRT_DIS_M[x:1] pins will disable the appropriate ports. Bit Bit Bit Bit Bit Bit Bit Bit 7= 6= 5= 4= 3= 2= 1= 0= Controls Port 7 Controls Port 6 Controls Port 5 Controls Port 4 Controls Port 3 Controls Port 2 Controls Port 1 Reserved, always = `0'
8.2.1.12
BIT NUMBER 7:0
Register 0Bh: Port Disable For Bus-Powered Operation
BIT NAME PORT_DIS_BP
DESCRIPTION Port Disable Bus-Powered: Disables 1 or more ports. 0 = Port is available 1 = Port is disabled During self-powered operation when mapping mode is disabled (PRTMAP_EN='0'), this selects the ports which will be permanently disabled, and are not available to be enabled or enumerated by a host Controller. The ports can be disabled in any order, the internal logic will automatically report the correct number of enabled ports to the USB host, and will reorder the active ports in order to ensure proper function. When using the internal default option, the PRT_DIS_P[x:1] and PRT_DIS_M[x:1] pins will disable the appropriate ports. Bit Bit Bit Bit Bit Bit Bit Bit 7= Controls Port 7 6= Controls Port 6 5= Controls Port 5 4= Controls Port 4 3= Controls Port 3 2= Controls Port 2 1= Controls Port 1 0 is Reserved, always = `0'
SMSC USB251x
41
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.13
BIT NUMBER 7:0
Register 0Ch: Max Power For Self-Powered Operation
BIT NAME MAX_PWR_SP
DESCRIPTION Max Power Self_Powered: Value in 2 mA increments that the hub consumes from an upstream port (VBUS) when operating as a self-powered hub. This value includes the hub silicon along with the combined power consumption (from VBUS) of all associated circuitry on the board. This value also includes the power consumption of a permanently attached peripheral if the hub is configured as a compound device, and the embedded peripheral reports 0 mA in its descriptors. Note: The USB 2.0 specification does not permit this value to exceed 100 mA
8.2.1.14
BIT NUMBER 7:0
Register 0Dh: Max Power For Bus-Powered Operation
BIT NAME MAX_PWR_BP
DESCRIPTION Max Power Bus_Powered: Value in 2 mA increments that the hub consumes from an upstream port (VBUS) when operating as a bus-powered hub. This value includes the hub silicon along with the combined power consumption (from VBUS) of all associated circuitry on the board. This value also includes the power consumption of a permanently attached peripheral if the hub is configured as a compound device, and the embedded peripheral reports 0 mA in its descriptors.
8.2.1.15
BIT NUMBER 7:0
Register 0Eh: Hub Controller Max Current For Self-Powered Operation
BIT NAME HC_MAX_C_SP
DESCRIPTION Hub Controller Max Current Self-Powered: Value in 2 mA increments that the hub consumes from an upstream port (VBUS) when operating as a selfpowered hub. This value includes the hub silicon along with the combined power consumption (from VBUS) of all associated circuitry on the board. This value does NOT include the power consumption of a permanently attached peripheral if the hub is configured as a compound device. Note: The USB 2.0 specification does not permit this value to exceed 100 mA
A value of 50 (decimal) indicates 100 mA, which is the default value.
Revision 1.0 (3-11-09)
42
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.16
BIT NUMBER 7:0
Register 0Fh: Hub Controller Max Current For Bus-Powered Operation
BIT NAME HC_MAX_C_BP
DESCRIPTION Hub Controller Max Current Bus-Powered: Value in 2 mA increments that the hub consumes from an upstream port (VBUS) when operating as a buspowered hub. This value will include the hub silicon along with the combined power consumption (from VBUS) of all associated circuitry on the board. This value will NOT include the power consumption of a permanently attached peripheral if the hub is configured as a compound device. A value of 50 (decimal) would indicate 100 mA, which is the default value.
8.2.1.17
BIT NUMBER 7:0
Register 10h: Power-On Time
BIT NAME POWER_ON_TIME
DESCRIPTION Power-On Time: The length of time that it takes (in 2 ms intervals) from the time the host initiated power-on sequence begins on a port until power is adequate on that port.
8.2.1.18
BIT NUMBER 7:0
Register 11h: Language ID High
BIT NAME LANG_ID_H
DESCRIPTION USB Language ID (Upper 8 bits of a 16-bit ID field)
8.2.1.19
BIT NUMBER 7:0
Register 12h: Language ID Low
BIT NAME LANG_ID_L
DESCRIPTION USB Language ID (Lower 8 bits of a 16-bit ID field)
8.2.1.20
BIT NUMBER 7:0
Register 13h: Manufacturer String Length
BIT NAME MFR_STR_LEN Manufacturer String Length
DESCRIPTION
When supported, the maximum string length is 31 characters.
8.2.1.21
BIT NUMBER 7:0
Register 14h: Product String Length
BIT NAME PRD_STR_LEN Product String Length
DESCRIPTION
When supported, the maximum string length is 31 characters.
SMSC USB251x
43
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.22
BIT NUMBER 7:0
Register 15h: Serial String Length
BIT NAME SER_STR_LEN Serial String Length
DESCRIPTION
When supported, the maximum string length is 31 characters.
8.2.1.23
BIT NUMBER 7:0
Register 16h-53h: Manufacturer String
BIT NAME MFR_STR
DESCRIPTION Manufacturer String, UNICODE UTF-16LE per USB 2.0 specification When supported, the maximum string length is 31 characters (62 bytes). Note: The string consists of individual 16-bit UNICODE UTF-16LE characters. The Characters will be stored starting with the LSB at the least significant address and the MSB at the next 8-bit location (subsequent characters must be stored in sequential contiguous address in the same LSB, MSB manner). Some EEPROM programmers may transpose the MSB and LSB, thus reversing the Byte order. Please pay careful attention to the Byte ordering or your selected programming tools.
8.2.1.24
BIT NUMBER 7:0
Register 54h-91h: Product String
BIT NAME PRD_STR
DESCRIPTION Product String, UNICODE UTF-16LE per USB 2.0 specification When supported, the maximum string length is 31 characters (62 bytes). Note: The string consists of individual 16-bit UNICODE UTF-16LE characters. The Characters will be stored starting with the LSB at the least significant address and the MSB at the next 8-bit location (subsequent characters must be stored in sequential contiguous address in the same LSB, MSB manner). Some EEPROM programmers may transpose the MSB and LSB, thus reversing the Byte order. Please pay careful attention to the Byte ordering or your selected programming tools.
Revision 1.0 (3-11-09)
44
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.25
BIT NUMBER 7:0
Register 92h-CFh: Serial String
BIT NAME SER_STR
DESCRIPTION Serial String, UNICODE UTF-16LE per USB 2.0 specification When supported, the maximum string length is 31 characters (62 bytes). Note: The string consists of individual 16-bit UNICODE UTF-16LE characters. The Characters will be stored starting with the LSB at the least significant address and the MSB at the next 8-bit location (subsequent characters must be stored in sequential contiguous address in the same LSB, MSB manner). Some EEPROM programmers may transpose the MSB and LSB, thus reversing the Byte order. Please pay careful attention to the Byte ordering or your selected programming tools.
8.2.1.26
BIT NUMBER 7:0
Register D0h: Battery Charging Enable
BIT NAME BC_EN
DESCRIPTION Only available in USB251xB/Bi hub family products. Battery Charging Enable: Enables the battery charging feature for the corresponding port. '0' = Battery Charging support is not enabled '1' = Battery charging support is enabled Bit Bit Bit Bit Bit Bit Bit Bit 7= 6= 5= 4= 3= 2= 1= 0= Reserved Reserved Reserved Controls Port Controls Port Controls Port Controls Port Reserved
4 3 2 1
8.2.1.27
BIT NUMBER 7:2 1:0
Register F6h: Boost_Up
BIT NAME Reserved BOOST_IOUT Reserved
DESCRIPTION
USB electrical signaling drive strength Boost Bit for the Upstream Port. `00' = Normal electrical drive strength = No boost `01' = Elevated electrical drive strength = Low (~ 4% boost) `10' = Elevated electrical drive strength = Medium (~ 8% boost) `11' = Elevated electrical drive strength = High (~12% boost) Note: "Boost" could result in non-USB Compliant parameters, OEM should use a `00' value unless specific implementation issues require additional signal boosting to correct for degraded USB signalling levels.
SMSC USB251x
45
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.28
BIT NUMBER 7:6 5:4
Register F7h: Boost_7:5
BIT NAME Reserved BOOST_IOUT_7 Reserved
DESCRIPTION
USB electrical signaling drive strength Boost Bit for Downstream Port `7'. `00' = Normal electrical drive strength = No boost `01' = Elevated electrical drive strength = Low (~4% boost) `10' = Elevated electrical drive strength = Medium (~ 8% boost) `11' = Elevated electrical drive strength = High (~12% boost)
3:2
BOOST_IOUT_6
USB electrical signaling drive strength Boost Bit for Downstream Port `6'. `00' = Normal electrical drive strength = No boost `01' = Elevated electrical drive strength = Low (~4% boost) `10' = Elevated electrical drive strength = Medium (~ 8% boost) `11' = Elevated electrical drive strength = High (~12% boost)
1:0
BOOST_IOUT_5
USB electrical signaling drive strength Boost Bit for Downstream Port `5'. `00' = Normal electrical drive strength = No boost `01' = Elevated electrical drive strength = Low (~4% boost) `10' = Elevated electrical drive strength = Medium (~ 8% boost) `11' = Elevated electrical drive strength = High (~12% boost)
Note: "Boost" could result in non-USB Compliant parameters, OEM should use a `00' value unless specific implementation issues require additional signal boosting to correct for degraded USB signalling levels.
Revision 1.0 (3-11-09)
46
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.29
BIT NUMBER 7:6
Register F8h: Boost_4:0
BIT NAME BOOST_IOUT_4
DESCRIPTION USB electrical signaling drive strength Boost Bit for Downstream Port `4'. `00' = Normal electrical drive strength = No boost `01' = Elevated electrical drive strength = Low (~4% boost) `10' = Elevated electrical drive strength = Medium (~ 8% boost) `11' = Elevated electrical drive strength = High (~12% boost)
5:4
BOOST_IOUT_3
USB electrical signaling drive strength Boost Bit for Downstream Port `3'. `00' = Normal electrical drive strength = No boost `01' = Elevated electrical drive strength = Low (~4% boost) `10' = Elevated electrical drive strength = Medium (~ 8% boost) `11' = Elevated electrical drive strength = High (~12% boost)
3:2
BOOST_IOUT_2
USB electrical signaling drive strength Boost Bit for Downstream Port `2'. `00' = Normal electrical drive strength = No boost `01' = Elevated electrical drive strength = Low (~4% boost) `10' = Elevated electrical drive strength = Medium (~ 8% boost) `11' = Elevated electrical drive strength = High (~12% boost)
1:0
BOOST_IOUT_1
USB electrical signaling drive strength Boost Bit for Downstream Port `1'. `00' = Normal electrical drive strength = No boost `01' = Elevated electrical drive strength = Low (~4% boost) `10' = Elevated electrical drive strength = Medium (~ 8% boost) `11' = Elevated electrical drive strength = High (~12% boost)
Note: "Boost" could result in non-USB Compliant parameters, OEM should use a `00' value unless specific implementation issues require additional signal boosting to correct for degraded USB signalling levels.
8.2.1.30
BIT NUMBER 7:0
Register FAh: Port Swap
BIT NAME PRTSP
DESCRIPTION Port Swap: Swaps the Upstream and Downstream USB DP and DM Pins for ease of board routing to devices and connectors. `0' = USB D+ functionality is associated with the DP pin and D- functionality is associated with the DM pin. `1' = USB D+ functionality is associated with the DM pin and D- functionality is associated with the DP pin. Bit Bit Bit Bit Bit Bit Bit Bit 7= 6= 5= 4= 3= 2= 1= 0= Controls Port Controls Port Controls Port Controls Port Controls Port Controls Port Controls Port When this bit 7 6 5 4 3 2 1 is `1', the upstream port DP/DM is swapped.
SMSC USB251x
47
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.31
BIT NUMBER 7:0
Register FBh: PortMap 12
BIT NAME PRTR12
DESCRIPTION PortMap register for ports 1 & 2. When a hub is enumerated by a USB host controller, the hub is only permitted to report how many ports it has; the hub is not permitted to select a numerical range or assignment. The host controller will number the downstream ports of the hub starting with the number '1', up to the number of ports that the hub reported having. The host's port number is referred to as "Logical Port Number" and the physical port on the hub is the "Physical Port Number". When mapping mode is enabled (see PRTMAP_EN in Register 08h: Configuration Data Byte 3) the hub's downstream port numbers can be mapped to different logical port numbers (assigned by the host). Note: OEM must ensure that contiguous logical port numbers are used, starting from #1 up to the maximum number of enabled ports; this ensures that the hub's ports are numbered in accordance with the way a host will communicate with the ports. Table 8.3 PortMap Register for Ports 1 & 2 Bit [7:4] `0000' `0001' `0010' `0011' `0100' `0101' `0100' `0111' `1000' to `1111' Bit [3:0] `0000' `0001' `0010' `0011' `0100' `0101' `0110' `0111' `1000' to `1111' Physical Port 2 is Disabled Physical Port 2 is mapped to Logical Port 1 Physical Port 2 is mapped to Logical Port 2 Physical Port 2 is mapped to Logical Port 3 Physical Port 2 is mapped to Logical Port 4 Physical Port 2 is mapped to Logical Port 5 Physical Port 2 is mapped to Logical Port 6 Physical Port 2 is mapped to Logical Port 7 Reserved, will default to `0000' value
Physical Port 1 is Disabled Physical Port 1 is mapped to Logical Port 1 Physical Port 1 is mapped to Logical Port 2 Physical Port 1 is mapped to Logical Port 3 Physical Port 1 is mapped to Logical Port 4 Physical Port 1 is mapped to Logical Port 5 Physical Port 1 is mapped to Logical Port 6 Physical Port 1 is mapped to Logical Port 7 Reserved, will default to `0000' value
Revision 1.0 (3-11-09)
48
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.32
BIT NUMBER 7:0
Register FCh: PortMap 34
BIT NAME PRTR34
DESCRIPTION PortMap register for ports 3 & 4. When a hub is enumerated by a USB host controller, the hub is only permitted to report how many ports it has; the hub is not permitted to select a numerical range or assignment. The host controller will number the downstream ports of the hub starting with the number '1', up to the number of ports that the hub reported having. The host's port number is referred to as "Logical Port Number" and the physical port on the hub is the "Physical Port Number". When mapping mode is enabled (see PRTMAP_EN in Register 08h: Configuration Data Byte 3) the hub's downstream port numbers can be mapped to different logical port numbers (assigned by the host). Note: OEM must ensure that contiguous logical port numbers are used, starting from #1 up to the maximum number of enabled ports; this ensures that the hub's ports are numbered in accordance with the way a host will communicate with the ports. Table 8.4 PortMap Register for Ports 3 & 4 Bit [7:4] `0000' `0001' `0010' `0011' `0100' `0101' `0100' `0111' `1000' to `1111' Bit [3:0] `0000' `0001' `0010' `0011' `0100' `0101' `0110' `0111' `1000' to `1111' Physical Port 4 is Disabled Physical Port 4 is mapped to Logical Port 1 Physical Port 4 is mapped to Logical Port 2 Physical Port 4 is mapped to Logical Port 3 Physical Port 4 is mapped to Logical Port 4 Physical Port 4 is mapped to Logical Port 5 Physical Port 4 is mapped to Logical Port 6 Physical Port 4 is mapped to Logical Port 7 Reserved, will default to `0000' value
Physical Port 3 is Disabled Physical Port 3 is mapped to Logical Port 1 Physical Port 3 is mapped to Logical Port 2 Physical Port 3 is mapped to Logical Port 3 Physical Port 3 is mapped to Logical Port 4 Physical Port 3 is mapped to Logical Port 5 Physical Port 3 is mapped to Logical Port 6 Physical Port 3 is mapped to Logical Port 7 Reserved, will default to `0000' value
SMSC USB251x
49
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.33
BIT NUMBER 7:0
Register FDh: PortMap 56
BIT NAME PRTR56
DESCRIPTION PortMap register for ports 5 & 6. When a hub is enumerated by a USB host controller, the hub is only permitted to report how many ports it has; the hub is not permitted to select a numerical range or assignment. The host controller will number the downstream ports of the hub starting with the number '1', up to the number of ports that the hub reported having. The host's port number is referred to as "Logical Port Number" and the physical port on the hub is the "Physical Port Number". When mapping mode is enabled (see PRTMAP_EN in Register 08h: Configuration Data Byte 3) the hub's downstream port numbers can be mapped to different logical port numbers (assigned by the host). Note: OEM must ensure that contiguous logical port numbers are used, starting from #1 up to the maximum number of enabled ports; this ensures that the hub's ports are numbered in accordance with the way a host will communicate with the ports. Table 8.5 PortMap Register for Ports 5 & 6 Bit [7:4] `0000' `0001' `0010' `0011' `0100' `0101' `0100' `0111' `1000' to `1111' Bit [3:0] `0000' `0001' `0010' `0011' `0100' `0101' `0110' `0111' `1000' to `1111' Physical Port 6 is Disabled Physical Port 6 is mapped to Logical Port 1 Physical Port 6 is mapped to Logical Port 2 Physical Port 6 is mapped to Logical Port 3 Physical Port 6 is mapped to Logical Port 4 Physical Port 6 is mapped to Logical Port 5 Physical Port 6 is mapped to Logical Port 6 Physical Port 6 is mapped to Logical Port 7 Reserved, will default to `0000' value
Physical Port 5 is Disabled Physical Port 5 is mapped to Logical Port 1 Physical Port 5 is mapped to Logical Port 2 Physical Port 5 is mapped to Logical Port 3 Physical Port 5 is mapped to Logical Port 4 Physical Port 5 is mapped to Logical Port 5 Physical Port 5 is mapped to Logical Port 6 Physical Port 5 is mapped to Logical Port 7 Reserved, will default to `0000' value
Revision 1.0 (3-11-09)
50
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.34
BIT NUMBER 7:0
Register FEh: PortMap 7
BIT NAME PRTR7 PortMap register for port 7.
DESCRIPTION
When a hub is enumerated by a USB host controller, the hub is only permitted to report how many ports it has; the hub is not permitted to select a numerical range or assignment. The host controller will number the downstream ports of the hub starting with the number '1', up to the number of ports that the hub reported having. The host's port number is referred to as "Logical Port Number" and the physical port on the hub is the "Physical Port Number". When mapping mode is enabled (see PRTMAP_EN in Register 08h: Configuration Data Byte 3) the hub's downstream port numbers can be mapped to different logical port numbers (assigned by the host). Note: OEM must ensure that contiguous logical port numbers are used, starting from #1 up to the maximum number of enabled ports; this ensures that the hub's ports are numbered in accordance with the way a host will communicate with the ports. Table 8.6 PortMap Register for Port 7 Bit [7:4] `0000' to `1111' `0000' `0001' `0010' `0011' `0100' `0101' `0110' `0111' `1000' to `1111' Reserved
Bit [3:0]
Physical Port 7 is Disabled Physical Port 7 is mapped to Logical Port 1 Physical Port 7 is mapped to Logical Port 2 Physical Port 7 is mapped to Logical Port 3 Physical Port 7 is mapped to Logical Port 4 Physical Port 7 is mapped to Logical Port 5 Physical Port 7 is mapped to Logical Port 6 Physical Port 7 is mapped to Logical Port 7 Reserved, will default to `0000' value
SMSC USB251x
51
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.2.1.35
BIT NUMBER 7:3 2
Register FFh: Status/Command
BIT NAME Reserved INTF_PW_DN Reserved
DESCRIPTION
SMBus Interface Power Down `0' = Interface is active `1' = Interface power down after ACK has completed
1
RESET
Reset the SMBus Interface and internal memory back to RESET_N assertion default settings. `0' = Normal Run/Idle State `1' = Force a reset of registers to their default state
0
USB_ATTACH
USB Attach (and write protect) `0' = SMBus slave interface is active `1' = The hub will signal a USB attach event to an upstream device, and the internal memory (address range 00h-FEh) is "write-protected" to prevent unintentional data corruption.
8.2.2
I2C EEPROM
The I2C EEPROM interface implements a subset of the I2C Master specification (Please refer to the Philips Semiconductor Standard I2C-Bus specification for details on I2C bus protocols). The SMSC hub's I2C EEPROM interface is designed to attach to a single "dedicated" I2C EEPROM, and it conforms to the Standard-mode I2C specification (100 kbit/s transfer rate and 7-bit addressing) for protocol and electrical compatibility. Note: Extensions to the I2C specification are not supported. The hub acts as the master and generates the serial clock SCL, controls the bus access (determines which device acts as the transmitter and which device acts as the receiver), and generates the START and STOP conditions.
8.2.2.1
Implementation Characteristics
The hub will only access an EEPROM using the sequential read protocol.
8.2.2.2
Pull-Up Resistor
The circuit board designer is required to place external pull-up resistors (10 k recommended) on the SDA / SMBDATA & SCL / SMBCLK / CFG_SEL[0] lines (per SMBus 1.0 specification, and EEPROM manufacturer guidelines) to VDD33 in order to assure proper operation.
8.2.2.3
I2C EEPROM Slave Address
The slave address is 1010000. Note: 10-bit addressing is NOT supported.
8.2.3
In-Circuit EEPROM Programming
The EEPROM can be programmed via ATE (automatic test equipment) by pulling RESET_N low (which tri-states the hub's EEPROM interface and allows an external source to program the EEPROM).
Revision 1.0 (3-11-09)
52
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.3
SMBus Slave Interface
Instead of loading User-Defined Descriptor data from an external EEPROM, the SMSC hub can be configured to receive a code load from an external processor via an SMBus interface. The SMBus interface shares the same pins as the EEPROM interface; if CFG_SEL[1] & CFG_SEL[0] activate the SMBus interface, external EEPROM support is no longer available (and the user-defined descriptor data must be downloaded via the SMBus). The SMSC hub waits indefinitely for the SMBus code load to complete and only "appears" as a newly connected device on USB after the code load is complete. The hub's SMBus implementation is a slave-only SMBus device. The implementation only supports read block and write block protocols. The hub responds to other protocols as described in Section 8.3.3, "Invalid Protocol Response Behavior," on page 54. Reference the System Management Bus specification, Rev 1.0. The SMBus interface is used to read and write the registers in the device. The register set is shown in Section 8.2.1, "Internal Register Set (Common to EEPROM and SMBus)," on page 35.
8.3.1
SMBus Slave Addresses
The SMBus slave address is 58h (01011000b).
8.3.2
Bus Protocols
Typical Write Block and Read Block protocols are shown below. Register accesses are performed using 7-bit slave addressing, an 8-bit register address field, and an 8-bit data field. The shading indicates the hub driving data on the SMBDATA line; otherwise, host data is on the SDA/SMBDATA line. The slave address is the unique SMBus Interface Address for the hub that identifies it on SMBus. The register address field is the internal address of the register to be accessed. The register data field is the data that the host is attempting to write to the register or the contents of the register that the host is attempting to read. Note: Data bytes are transferred MSB first.
8.3.2.1
Block Read/Write
The block write begins with a slave address and a write condition. After the command code, the host issues a byte count which describes how many more bytes will follow in the message. If a slave had 20 bytes to send, the first byte would be the number 20 (14h), followed by the 20 bytes of data. The byte count may not be 0. A block read or write is allowed to transfer a maximum of 32 data bytes. Note: For the following SMBus tables:
D e n o te s M a s te r-to -S la v e
1 S 7 Slave Address 1 Wr 1 A
D e n o te s S la v e -to -M a s te r
8 Register Address 1 A ... 8 Data byte N 1 A 1 P
8
Byte Count = N
1 A
8 Data byte 1
1 A
8 Data byte 2 Block Write
1 A
Figure 8.1 Block Write
SMSC USB251x
53
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.3.2.2
Block Read
A block read differs from a block write in that the repeated start condition exists to satisfy the I2C specification's requirement for a change in the transfer direction.
1 S
7 Slave Address 8 1 A
1 Wr 8
1 A
8 Register Address 1 A 8 Data byte 2 Block Read
1 A
1 S 1 A
7 Slave Address 8 Data byte N
1 Rd 1 A
1 A ... 1 P
Byte Count = N
Data byte 1
Figure 8.2 Block Read
8.3.3
Invalid Protocol Response Behavior
Registers that are accessed with an invalid protocol are not updated. A register is only updated following a valid protocol. The only valid protocols are write block and read block, which are described above. The hub only responds to the hardware selected Slave Address (0101100x). Attempting to communicate with the hub over SMBus with an invalid slave address or invalid protocol results in no response, and the SMBus Slave Interface returns to the idle state. The only valid registers that are accessible by the SMBus slave address are the registers defined in the Registers Section. The hub does not respond to undefined registers.
8.3.4
General Call Address Response
The hub does not respond to a general call address of 0000_000b.
8.3.5
Slave Device Time-Out
According to the SMBus specification, version 1.0 devices in a transfer can abort the transfer in progress and release the bus when any single clock low interval exceeds 25 ms (TTIMEOUT, MIN). Devices that have detected this condition must reset their communication and be able to receive a new START condition no later than 35 ms (TTIMEOUT, MAX). Note: Some simple devices do not contain a clock low drive circuit; this simple kind of device typically resets its communications port after a start or stop condition. The slave device time-out must be implemented.
8.3.6
Stretching the SCLK Signal
The hub supports stretching of the SCLK by other devices on the SMBus. The hub does not stretch the SCLK.
8.3.7
SMBus Timing
The SMBus Slave Interface complies with the SMBus AC Timing specification. See the SMBus timing in the "Timing Diagram" section.
8.3.8
Bus Reset Sequence
The SMBus slave interface resets and returns to the idle state upon a START field followed immediately by a STOP field.
Revision 1.0 (3-11-09)
54
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.3.9
SMBus Alert Response Address
The SMBALERT# signal is not supported by the hub.
8.3.9.1
Undefined Registers
The registers shown in Table 8.2 are the defined registers in the hub. Reads to undefined registers return 00h. Writes to undefined registers have no effect and do not return an error.
8.3.9.2
Reserved Registers
Reserved registers should be written to `0' unless otherwise specified. Contents read should be ignored.
8.4
Default Configuration Option:
To configure the SMSC hub in its default configuration, strap CFG_SEL[2:0] to 00h. This procedure configures the hub to the internal defaults and enables the strapping options. Please see Section 8.2.1, "Internal Register Set (Common to EEPROM and SMBus)" for the list of the default values. For specific pin strapping options, please see Chapter 5, Pin Descriptions for instructions on how to modify the default values. Options include port disable and non-removable pin strapping.
8.5
Default Strapping Options:
The USB251x can be configured via a combination of internal default values and pin strap options. Please see Table 8.2 for specific details on how to enable the default/pin-strap configuration option. The strapping option pins only cover a limited sub-set of the configuration options. The internal default values will be used for the bits & registers that are not controlled by a strapping option pin. Please refer to Table 8.2 for the internal default values that are loaded when this option is selected.
8.6
Reset
There are two different resets that the hub experiences. One is a hardware reset via the RESET_N pin and the second is a USB Bus Reset.
8.6.1
External Hardware RESET_N
A valid hardware reset is defined as assertion of RESET_N for a minimum of 1 s after all power supplies are within operating range. While reset is asserted, the hub (and its associated external circuitry) consumes less than 500 A of current from the upstream USB power source. Assertion of RESET_N (external pin) causes the following: 1. All downstream ports are disabled, and PRTPWR power to downstream devices is removed (unless BC_EN is enabled). 2. The PHYs are disabled, and the differential pairs will be in a high-impedance state. 3. All transactions immediately terminate; no states are saved. 4. All internal registers return to the default state (in most cases, 00(h)). 5. The external crystal oscillator is halted. 6. The PLL is halted. The hub is "operational" 500 s after RESET_N is negated. Once operational, the hub immediately reads OEM-specific data from the external EEPROM (if the SMBus option is not disabled).
SMSC USB251x
55
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.6.1.1
RESET_N for Strapping Option Configuration
Hardware reset asserted Drive Strap Outputs to inactive levels Attach USB Upstream Start completion request response
Read Strap Options
USB Reset recovery
Idle
t1 t2
RESET_N
t5 t3
t6
t7
t8
VSS
t4
Strap Pins Don't Care VSS Valid Don't Care Driven by Hub if strap is an output.
Figure 8.3 Reset_N Timing for Default/Strap Option Mode Table 8.7 Reset_N Timing for Default/Strap Option Mode NAME t1 t2 t3 t4 t5 t6 t7 t8 DESCRIPTION RESET_N Asserted. Strap Setup Time Strap Hold Time. hub outputs driven to inactive logic states USB Attach (See Note). Host acknowledges attach and signals USB Reset. USB Idle. Completion time for requests (with or without data stage). Notes: When in bus-powered mode, the hub and its associated circuitry must not consume more than 100 mA from the upstream USB power source during t1+t5. All power supplies must have reached the operating levels mandated in Chapter 9, DC Parameters, prior to (or coincident with) the assertion of RESET_N. 100 undefined 5 MIN 1 16.7 16.7 1.5 1400 2 100 TYP MAX UNITS sec nsec nsec sec msec msec msec msec
Revision 1.0 (3-11-09)
56
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.6.1.2
RESET_N for EEPROM Configuration
Hardware reset asserted Read EEPROM + Set Options Attach USB Upstream Start completion request response
Read Strap Options
USB Reset recovery
Idle
t4 t1
RESET_N
t2
t3
t5
t6
t7
VSS
Figure 8.4 Reset_N Timing for EEPROM Mode Table 8.8 Reset_N Timing for EEPROM Mode NAME t1 t2 t3 t4 t5 t6 t7 DESCRIPTION RESET_N Asserted. Hub Recovery/Stabilization. EEPROM Read / Hub Config. USB Attach (See Note). Host acknowledges attach and signals USB Reset. USB Idle. Completion time for requests (with or without data stage). Notes: When in bus-powered mode, the hub and its associated circuitry must not consume more than 100 mA from the upstream USB power source during t4+t5+t6+t7. All power supplies must have reached the operating levels mandated in Chapter 9, DC Parameters, prior to (or coincident with) the assertion of RESET_N. 100 undefined 5 2.0 MIN 1 500 99.5 100 TYP MAX UNITS sec sec msec msec msec msec msec
SMSC USB251x
57
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
8.6.1.3
RESET_N for SMBus Slave Configuration
Hardware reset asserted Reset Negation SMBus Code Hub PHY Load Stabilization Attach USB Upstream USB Reset recovery Idle Start completion request response
t1
RESET_N
t2
t3
t4
t5
t6
t7
VSS
Figure 8.5 Reset_N Timing for SMBus Mode Table 8.9 Reset_N Timing for SMBus Mode NAME t1 t2 t3 t4 t5 t6 t7 DESCRIPTION RESET_N Asserted. Hub Recovery/Stabilization. SMBus Code Load (See Note). Hub Configuration and USB Attach. Host acknowledges attach and signals USB Reset. USB Idle. Completion time for requests (with or without data stage). Notes: For bus-powered configurations, the 99.5 ms (MAX) is required, and the hub and its associated circuitry must not consume more than 100 mA from the upstream USB power source during t2+t3+t4+t5+t6+t7. For Self-Powered configurations, t3 MAX is not applicable and the time to load the configuration is determined by the external SMBus host. All power supplies must have reached the operating levels mandated in Chapter 9, DC Parameters, prior to (or coincident with) the assertion of RESET_N. 100 Undefined 5 250 MIN 1 500 300 100 TYP MAX UNITS sec sec msec msec msec msec msec
8.6.2
USB Bus Reset
In response to the upstream port signaling a reset to the hub, the hub does the following: Note: The hub does not propagate the upstream USB reset to downstream devices. 1. Sets default address to 0. 2. Sets configuration to: Unconfigured. 3. Negates PRTPWR[x:1] to all downstream ports unless battery charging (BC_EN) is enabled. 4. Clears all TT buffers. 5. Moves device from suspended to active (if suspended).
Revision 1.0 (3-11-09)
58
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
6. Complies with Section 11.10 of the USB 2.0 specification for behavior after completion of the reset sequence. The host then configures the hub and the hub's downstream port devices in accordance with the USB specification. Note: The hub does not propagate the upstream USB reset to downstream devices.
SMSC USB251x
59
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Chapter 9 DC Parameters
9.1 Maximum Guaranteed Ratings
SYMBOL TSTOR MIN -55 MAX 150 UNITS C Refer to JEDEC Specification J-STD020D.
VDD33 PLLFILT CRFILT
PARAMETER Storage Temperature Lead Temperature 3.3 V supply voltage Voltage on any I/O pin Voltage on XTALIN Voltage on XTALOUT
COMMENTS
4.6
V
Applies to all parts.
-0.5 -0.5 -0.5
5.5 4.0 2.5
V V V
Note 9.1
Stresses above the specified parameters could cause permanent damage to the device. This is a stress rating only and functional operation of the device at any condition above those indicated in the operation sections of this specification is not implied. When powering this device from laboratory or system power supplies, it is important that the absolute maximum ratings not be exceeded or device failure can result. Some power supplies exhibit voltage spikes on their outputs when the AC power is switched on or off. In addition, voltage transients on the AC power line may appear on the DC output. When this possibility exists, it is suggested that a clamp circuit be used.
Note 9.2
9.2
Operating Conditions
PARAMETER Commercial Operating Temperature Industrial Operating Temperature 3.3 V supply voltage 3.3 V supply rise time Voltage on any I/O pin
SYMBOL TA
MIN 0
MAX 70
UNITS C
COMMENTS Ambient temperature in still air. Only applies to USB251x, USB251xA, and USB251xB products. Ambient temperature in still air. Only applies to USB251xi, USB251xAi, and USB251xBi products. Applies to all parts. See Figure 9.1 If any 3.3 V supply voltage drops below 3.0 V, then the MAX becomes: (3.3 V supply voltage) + 0.5
TAI
-40
85
C
VDD33
3.0 0 -0.3
3.6 400 5.5
V s V
tRT
Voltage on XTALIN
Revision 1.0 (3-11-09)
-0.3
VDD33 60
V
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Voltage VDD33
tRT
3.3 V 100%
90%
VSS
10%
t10%
t90%
Time
Figure 9.1 Supply Rise Time Model Table 9.1 DC Electrical Characteristics PARAMETER I, IS Type Input Buffer Low Input Level High Input Level Input Leakage Hysteresis (`IS' Only) Input Buffer with Pull-Up (IPU) Low Input Level High Input Level Low Input Leakage High Input Leakage Input Buffer with Pull-Down (IPD) Low Input Level High Input Level Low Input Leakage High Input Leakage ICLK Input Buffer Low Input Level High Input Level Input Leakage VILCK VIHCK IIL 1.4 -10 +10 0.5 V V A VIN = 0 to VDD33 VILI VIHI IILL IIHL 2.0 +10 -35 -10 -90 0.8 V V A A VIN = 0 VIN = VDD33 TTL Levels VILI VIHI IILL IIHL 2.0 +35 -10 +90 +10 0.8 V V A A VIN = 0 VIN = VDD33 TTL Levels VILI VIHI IIL VHYSI 2.0 -10 250 +10 350 0.8 V V A mV VIN = 0 to VDD33 TTL Levels SYMBOL MIN TYP MAX UNITS COMMENTS
SMSC USB251x
61
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 9.1 DC Electrical Characteristics (continued) PARAMETER O12, I/O12 &I/OSD12 Type Buffer Low Output Level High Output Level Output Leakage Hysteresis (`SD' pad only) VOL VOH IOL VHYSC 2.4 -10 250 +10 350 0.4 V V A mV IOL = 12 mA @ VDD33 = 3.3 V IOH = -12 mA @ VDD33 = 3.3 V VIN = 0 to VDD33 (Note 9.1) IO-U (Note 2) Supply Current Unconfigured
Hi-Speed Host
SYMBOL
MIN
TYP
MAX
UNITS
COMMENTS
USB2512/12A/12B USB2512i/12Ai/12Bi USB2513/13B USB2513i/13Bi USB2514/14B USB2514i/14Bi USB2517 USB2517i Supply Current Unconfigured
Full-Speed Host
ICCINTHS ICCINTHS ICCINTHS ICCINTHS ICCINTHS ICCINTHS ICCINTHS ICCINTHS
90 90 95 95 95 95 120 120
95 95 105 105 105 105 130 130
mA mA mA mA mA mA mA mA
USB2512/12A/12B USB2512i/12Ai/12Bi USB2513/13B USB2513i/13Bi USB2514/14B USB2514i/14Bi USB2517 USB2517i
ICCINITFS ICCINITFS ICCINITFS ICCINITFS ICCINITFS ICCINITFS ICCINITFS ICCINITFS
80 80 80 80 80 80 105 105
85 85 90 90 90 90 115 115
mA mA mA mA mA mA mA mA
Revision 1.0 (3-11-09)
62
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 9.1 DC Electrical Characteristics (continued) PARAMETER Supply Current Configured USB2512/12A/12B USB2512i/12Ai/12Bi USB2513/13B USB2513i/13Bi USB2514/14B USB2514i/14Bi USB2517 USB2517i Supply Current Configured
Hi-Speed Host, 1 downstream port
SYMBOL
MIN
TYP
MAX
UNITS
COMMENTS
IHCH1 IHCH1 IHCH1 IHCH1 IHCH1 IHCH1 IHCH1 IHCH1
130 130 150 150 155 155 240 240
1 port base + 15 mA
155 160 180 185 200 205 275 280
1 port base + 40 mA
mA mA mA mA mA mA mA mA
Hi-Speed Host, each additional downstream port
mA
Full-Speed Host, 1 downstream port
Supply Current Configured
USB2512/12A/12B USB2512i/12Ai/12Bi USB2513/13B USB2513i/13Bi USB2514/14B USB2514i/14Bi USB2517 USB2517i Supply Current Configured
IFCC1 IFCC1 IFCC1 IFCC1 IFCC1 IFCC1 IFCC1 IFCC1
105 105 125 125 140 140 215 215
1 port base + 0 mA
125 135 135 140 150 155 220 225
1 port base + 0 mA
mA mA mA mA mA mA mA mA There is no additional current for additional ports.
Full-Speed Host, each additional downstream port
mA
SMSC USB251x
63
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 9.1 DC Electrical Characteristics (continued) PARAMETER Supply Current Suspend USB2512/12A/12B USB2512i/12Ai/12Bi USB2513/13B USB2513i/13Bi USB2514/14B USB2514i/14Bi USB2517 USB2517i Supply Current Reset USB2512/12A/12B USB2512i/12Ai/12Bi USB2513/13B USB2513i/13Bi USB2514/14B USB2514i/14Bi USB2517 USB2517i Note 9.3 Note 9.4 ICRST ICRST ICRST ICRST ICRST ICRST ICRST ICRST 105 105 100 100 100 100 115 115 275 400 230 350 275 400 320 600 A A A A A A A A ICSBY ICSBY ICSBY ICSBY ICSBY ICSBY ICSBY ICSBY 310 310 310 310 310 310 310 310 420 600 420 550 420 600 610 800 A A A A A A A A SYMBOL MIN TYP MAX UNITS COMMENTS All supplies combined
All supplies combined
Output leakage is measured with the current pins in high impedance. See USB 2.0 specification for USB DC electrical characteristics.
Revision 1.0 (3-11-09)
64
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Table 9.2 Pin Capacitance LIMITS PARAMETER Clock Input Capacitance Input Capacitance Output Capacitance Note 9.5 SYMBOL CXTAL CIN COUT MIN TYP MAX 2 10 20 UNIT pF pF pF TEST CONDITION All pins except USB pins and the pins under the test tied to AC ground. (See Note 9.5)
Capacitance TA = 25C; fc = 1 MHz; VDD33 = 3.3 V
SMSC USB251x
65
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller Datasheet
Chapter 10 AC Specifications
10.1 Oscillator/Clock
Crystal: Parallel Resonant, Fundamental Mode, 24/481 MHz 350 ppm. External Clock: 50% Duty cycle 10%, 24/48 MHz 350 ppm, Jitter < 100 ps rms.
C1 1 Meg
XTAL1 (CS1 = CB + CXTAL )
Crystal
CL
C2
XTAL2 (CS2 = CB + CXTAL )
Figure 10.1 Typical Crystal Circuit
Note: CB equals total board/trace capacitance.
(C1 + CS1) x (C2 + CS2) CL = (C1 + CS1 + C2 + CS2)
Figure 10.2 Formula to Find the Value of C1 and C2
C = (2 x CL) - Cs
Figure 10.3 Simplified Form of the Capacitance Formula
10.1.1
SMBus Interface:
The SMSC Hub conforms to all voltage, power, and timing characteristics and specifications as set forth in the SMBus 1.0 specification for Slave-Only devices (except as noted in Section 8.3).
10.1.2
I2C EEPROM:
Clock frequency is fixed at 60 KHz 20%.
10.1.3
USB 2.0
The SMSC Hub conforms to all voltage, power, and timing characteristics and specifications as set forth in the USB 2.0 specification. Please refer to the USB 2.0 specification for more information.
1.Only when SEL48 is available and supported.
Revision 1.0 (3-11-09)
66
SMSC USB251x
DATASHEET
USB 2.0 High-Speed 2-Port Hub Controller Datasheet
Chapter 11 Package Outlines
Revision 1.0 (3-11-09)
DATASHEET
67
SMSC USB251x
Figure 11.1 36-Pin QFN, 6x6 mm Body, 0.5 mm Pitch
USB 2.0 High-Speed 2-Port Hub Controller Datasheet
Revision 1.0 (3-11-09)
DATASHEET
68
SMSC USB251x
Figure 11.2 48-Pin QFN, 7x7 mm Body, 0.5 mm Pitch
USB 2.0 High-Speed 2-Port Hub Controller Datasheet
Revision 1.0 (3-11-09)
DATASHEET
69
SMSC USB251x
Figure 11.3 64-Pin QFN, 9x9 mm Body, 0.5 mm Pitch
USB 2.0 Hi-Speed Hub Controller
Datasheet
11.1
Tape and Reel Specifications
Figure 11.4 36-Pin Package Tape Specifications
Revision 1.0 (3-11-09)
70
SMSC USB251x
DATASHEET
USB 2.0 Hi-Speed Hub Controller
Datasheet
Figure 11.5 48-Pin Package Tape Specifications
SMSC USB251x
71
Revision 1.0 (3-11-09)
DATASHEET
USB 2.0 Hi-Speed Hub Controller
Datasheet
Figure 11.6 36-Pin and 48-Pin Package Reel Specifications
Revision 1.0 (3-11-09)
72
SMSC USB251x
DATASHEET

▲Up To Search▲

Price & Availability of USB2514B-AEZG

	To Download USB2514B-AEZG Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .