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SMSC USB2512B, USB2513B, USB2514B, USB2517 Chapter 8 Configuration Options, 8.1Hub, 8.1.1Hub Configuration Options, 8.1.2SMBus or EEPROM Interface, DATASHEET, CFG_SEL[2], CFG_SEL[1], CFG_SEL[0]

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USB 2.0 Hi-Speed Hub Controller

Datasheet

Chapter 8 Configuration Options

8.1Hub

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.

8.1.1Hub 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.

8.1.2SMBus or EEPROM Interface

Table 8.1 Hub Configuration Options

CFG_SEL[2]	CFG_SEL[1]	CFG_SEL[0]		DESCRIPTION

0	0	0	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

0	0	1	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

0	1	0	Internal Default Configuration
				Strap options enabled
				Bus-powered operation
				LED mode = USB (when available on package)
				Individual power switching
				Individual over-current sensing

0	1	1	2-Wire I2C EEPROMS are supported
				Strap options disabled
				All settings are controlled by registers as set by the user

SMSC USB251x

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Revision 1.0 (3-11-09)

DATASHEET

Contents

USB2512/12A/12B USB2513/13B USB2514/14B USB2517 PRODUCT FEATURES USB2512-AEZG USB2512A-AEZG USB2512B-AEZG USB2513-AEZG USB2513B-AEZG Table of Contents Page List of Tables List of Figures Chapter 1 USB251x Hub Family Differences Overview Chapter 2 General Description OEM Selectable Features „Supports custom string descriptors (up to 31 characters): „When available, pin selectable options for default configuration may include: Chapter 3 Acronyms Chapter 4 Block Diagram Serial Interface Detect Repeater Chapter 5 Pin Descriptions 5.1Pin Configurations and Lists (Organized by Package Type) USB2512i/12Ai/12Bi (Top View QFN-36) USB2513/13i USB2513B/13Bi (Top View QFN-36) Figure 5.2 3-Port 36-pinQFN USB2514/14i USB2514B/14Bi USB2513 (Top View QFN-48) USB2514 (Top View QFN-64) Pin List in Alphabetical Order PIN NUMBERS 36 QFN 48QFN BC_EN[1] Battery BC_EN[2] Option BC_EN[3] Table 5.1 Pin List in Alphabetical Order (continued) USB2514B USB2514Bi Page USB2513B USB2513Bi 5.2USB251x Pin Descriptions (Grouped by Function) Table 5.2 USB251x Pin Descriptions (continued) DOWNSTREAM USB 2.0 INTERFACES (continued) Warning: SERIAL PORT INTERFACES MISC 5.3Buffer Type Descriptions Table 5.3 Buffer Type Descriptions (continued) Chapter 6 LED Usage Description 6.1LED Functionality 6.1.1USB Mode 14-Wire 6.1.2LED Mode Speed Indication Page Chapter 7 Battery Charging Support 7.1General Description USB251xB/xBi 7.2USB Battery Charging 7.2.1Special Behavior of PRTPWR Pins 7.3Battery Charging Configuration 7.3.1Battery Charging enabled via EEPROM or SMBus Chapter 8 Configuration Options 8.1Hub 8.1.1Hub Configuration Options 8.1.2SMBus or EEPROM Interface 8.1.2.1Power Switching Polarity 8.2EEPROM Interface 8.2.1Internal Register Set (Common to EEPROM and SMBus) 8.2.1.1Register 00h: Vendor ID (LSB) 8.2.1.2Register 01h: Vendor ID (MSB) Register 02h: Product ID (LSB) 8.2.1.4Register 03h: Product ID (MSB) 8.2.1.5Register 04h: Device ID (LSB) 8.2.1.6Register 05h: Device ID (MSB) 8.2.1.7Register 06h: CONFIG_BYTE_1 8.2.1.8Register 07h: Configuration Data Byte 8.2.1.9Register 08h: Configuration Data Byte 8.2.1.10Register 09h: Non-RemovableDevice Register 0Ah: Port Disable For Self-PoweredOperation 8.2.1.12Register 0Bh: Port Disable For Bus-PoweredOperation 8.2.1.13Register 0Ch: Max Power For Self-PoweredOperation 8.2.1.14Register 0Dh: Max Power For Bus-PoweredOperation 8.2.1.15Register 0Eh: Hub Controller Max Current For Self-PoweredOperation 8.2.1.16Register 0Fh: Hub Controller Max Current For Bus-PoweredOperation 8.2.1.17Register 10h: Power-OnTime Register 11h: Language ID High Register 12h: Language ID Low Register 13h: Manufacturer String Length 8.2.1.22Register 15h: Serial String Length 8.2.1.23Register 16h-53h:Manufacturer String 8.2.1.24Register 54h-91h:Product String Register 92h-CFh:Serial String 8.2.1.26Register D0h: Battery Charging Enable 8.2.1.27Register F6h: Boost_Up 8.2.1.28Register F7h: Boost_7:5 Register F8h: Boost_4:0 8.2.1.30Register FAh: Port Swap 8.2.1.31Register FBh: PortMap Page Page Page 8.2.2I2C EEPROM 8.2.2.1Implementation Characteristics 8.2.2.2Pull-UpResistor 8.2.2.3I2C EEPROM Slave Address 8.2.3In-CircuitEEPROM Programming 8.3SMBus Slave Interface 8.3.1SMBus Slave Addresses 8.3.2Bus Protocols 8.3.2.1Block Read/Write 8.3.2.2Block Read 8.3.3Invalid Protocol Response Behavior 8.3.4General Call Address Response 8.3.5Slave Device Time-Out 8.3.6Stretching the SCLK Signal 8.3.7SMBus Timing 8.4Default Configuration Option: 8.5Default Strapping Options: 8.6Reset 8.6.1External Hardware RESET_N 8.6.1.1RESET_N for Strapping Option Configuration 8.6.1.2RESET_N for EEPROM Configuration 8.6.1.3RESET_N for SMBus Slave Configuration 8.6.2USB Bus Reset Page Chapter 9 DC Parameters 9.1Maximum Guaranteed Ratings 9.2Operating Conditions Figure 9.1 Supply Rise Time Model Table 9.1 DC Electrical Characteristics I, IS Type Input Buffer Input Buffer with Pull-Up(IPU) Input Buffer with Pull-Down(IPD) DC Electrical Characteristics (continued) O12, I/O12 &I/OSD12 Type Buffer IO-U Supply Current Unconfigured Table 9.1 DC Electrical Characteristics (continued) There is no Full-SpeedHost, each additional additional current for additional ports Supply Current Suspend Supply Current Reset Table 9.2 Pin Capacitance LIMITS UNIT TEST CONDITION Chapter 10 AC Specifications 10.1Oscillator/Clock XTAL1 1 Meg XTAL2 Chapter 11 Package Outlines Figure 11.2 48-PinQFN, 7x7 mm Body, 0.5 mm Pitch Figure 11.3 64-PinQFN, 9x9 mm Body, 0.5 mm Pitch 11.1Tape and Reel Specifications Page Figure 11.6 36-Pinand 48-PinPackage Reel Specifications