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USB2504/
USB2504A
Integrated USB 2.0
Compatible 4-Port Hub
Datasheet
PRODUCT FEATURES
Integrated USB 2.0 Compatible 4-Port Hub On-Board 24MHz Crystal Driver Circuit or 24 MHz
— 4 Transaction Translators for highest performance
external clock driver
— High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and
Internal PLL for 480MHz USB 2.0 Sampling
Low-Speed (1.5Mbits/s) compatible
Internal 1.8V Linear Voltage Regulator
— Full power management with per port or ganged,
selectable power con
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet ORDER NUMBERS: USB2504/USB2504A-JT FOR 64 PIN TQFP LEAD-FREE ROHS COMPLIANT PACKAGE 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright © 2007 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Altho
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Table of Contents Chapter 1 General Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1 OEM Selectable Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Chapter 2 Pin Table 4-Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Chapter 3 Pin Configuratio
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Chapter 10 Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Revision 2.3 (08-27-07) 4 SMSC USB2504/USB2504A DATASHEET
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet List of Figures Figure 3.1 4-Port 64 Pin TQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 4.1 4-Port Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 5.1 LED Strapping Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet List of Tables Table 2.1 4-Port Pin Table for 64-TQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 4.1 4-Port Hub Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 4.2 SMBus or EEPROM Interface Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 4.3 Miscellaneou
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Chapter 1 General Description The SMSC 4-Port Hub is fully compliant with the USB 2.0 Specification and will attach to a USB host as a Full-Speed Hub or as a Full-/High-Speed Hub. The 4-Port Hub supports Low-Speed, Full-Speed, and High-Speed (if operating as a High-Speed Hub) downstream devices on all of the enabled downstream ports. A dedicated Transaction Translator (TT) is available for each downstream facing port. This architecture ensures m
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Chapter 2 Pin Table 4-Port Table 2.1 4-Port Pin Table for 64-TQFP UPSTREAM USB 2.0 INTERFACE (3 PINS) USBDP0 USBDN0 VBUS_DET 4-PORT USB 2.0 INTERFACE (26 PINS) USBDP1 USBDN1 USBDP2 USBDN2 USBDP3 USBDN3 USBDP4 USBDN4 GR1/ GR2/ GR3/ GR4/ NON_REM0 NON_REM1 PRT_DIS0 PRT_DIS1 AM1/ AM2/ AM3 AM4/ GANG_EN MTT_EN LED_EN PRTPWR1 PRTPWR2 PRTPWR3 PRTPWR4 OCS1_N OCS2_N OCS3_N OCS4_N PRTPWR_POL RBIAS SERIAL PORT INTERFACE (5 PINS) SDA/SMBDATA SCL/SMBCLK/ CFG_
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Chapter 3 Pin Configuration 4-Port Hub RESET_N 49 32 NC CFG_SEL1 TEST0 SELF_PWR VDD18 VBUS_DET VSS VSS VDD33 VDD18 GR1/NON_REM0 VSS AM1/GANG_EN NC GR2/NON_REM1 USB2504 & XTAL2 USB2504A AM2/MTT_EN XTAL1/CLKIN PRTPWR_POL CFG_SEL2 GR3/PRT_DIS0 VDDA18PLL AM3 VDDA33PLL GR4/PRT_DIS1 ATEST/REG_EN AM4/LED_EN RBIAS NC VSS 64 17 NC Figure 3.1 4-Port 64 Pin TQFP SMSC USB2504/USB2504A 9 Revision 2.3 (08-27-07) DATASHEET VDDA33 1 48 TEST1 USBDP0 CLKIN_EN USB
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Chapter 4 4-Port Hub Block Diagram To EEPROM Pin or SMBus Upstream Upstream 24 MHz 1.8V Strapping 3.3V Master USB Data V Crystal Cap Options BUS SD SCL Internal V 1.8V Serial BUS Defaults PLL Interface Power Reg. Upstream Select Detect PHY SIE Controller Repeater TT TT TT TT Port #1 #2 #3 #4 Controller Routing Logic Port #1 Port #4 Downstream OC Sense Downstream OC Sense ... PHY #1 Switch Driver PHY #4 Switch Driver LED Drivers LED Drivers Downs
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Table 4.1 4-Port Hub Pin Descriptions (continued) NAME SYMBOL TYPE FUNCTION 4-PORT USB 2.0 HUB INTERFACE High-Speed USB USBDN[4:1] IO-U These pins connect to the downstream USB peripheral Data USBDP[4:1] devices attached to the Hub’s ports. USB Power PRTPWR[4:1] O12 Enables power to USB peripheral devices (downstream). Enable The active signal level of the PRTPWR[4:1] pins is determined by the Power Polarity Strapping function of the PRTPWR
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Table 4.1 4-Port Hub Pin Descriptions (continued) NAME SYMBOL TYPE FUNCTION Port 4 Amber AM4/ I/O12 Amber indicator LED for port 4. Will be active low when LED support is enabled via EEPROM or SMBus. LED LED_EN & If the hub is configured by the internal default configuration, LED Enable this pin will be sampled at RESET_N negation to determine strapping option if LED support is enabled or disabled. Also, the active state of the LED will be
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Table 4.1 4-Port Hub Pin Descriptions (continued) NAME SYMBOL TYPE FUNCTION SERIAL PORT INTERFACE Serial Data/SMB SDA/SMBDATA IOSD12 (Serial Data)/(SMB Data) signal. Data Serial Clock/SMB SCL/SMBCLK IOSD12 (Serial Clock)/(SMB Clock) signal. Clock Configuration CFG_SEL0 IOSD12 This multifunction pin is read on the rising edge of RESET_N negation and will determine the hub Programming configuration method as described in Table 4.2. Select Co
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Table 4.3 Miscellaneous Pins (continued) NAME SYMBOL TYPE FUNCTION RESET Input RESET_N IS This active low signal is used by the system to reset the chip. The minimum active low pulse is 1us. Self-Power / SELF_PWR I Detects availability of local self-power source. Low = Self/local power source is NOT available (i.e., Hub Bus-Power gets all power from Upstream USB VBus). Detect High = Self/local power source is available. TEST Pins TEST[1:0] I
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Table 4.5 Buffer Type Descriptions BUFFER DESCRIPTION I Input. IPD Input, with a weak Internal pull-down. IPU Input, with a weak Internal pull-up. IS Input with Schmitt trigger. O12 Output 12mA. I/O12 Input/Output, 12mA IOSD12 Open drain….12mA sink with Schmitt trigger, and must meet I2C-Bus Specification Version 2.1 requirements. ICLKx XTAL Clock Input OCLKx XTAL Clock Output I-R RBIAS IO-U Defined in USB Specification. Note: Meets USB 1.1 req
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet Chapter 5 Functional Block Description 5.1 4-Port Hub SMSC’s USB 2.0 4-Port Hub is fully specification compliant to the Universal Serial Bus Specification Revision 2.0 April 27,2000 (12/7/2000 and 5/28/2002 Errata). Please reference Chapter 11 (Hub Specification) for general details regarding Hub operation and functionality. For performance reasons, the 4-Port Hub provides 1 Transaction Translator (TT) per port (defined as Multi-TT configuratio
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet 5.1.1.5 Port Indicators Controls the use of LED indicator for Port status information. See Section 11.5.3 of the USB 2.0 Specification for additional details. This field is set by the OEM using either the SMBus or EEPROM interface options. When using the internal default option, the LED_EN pin enables/disables LED Indicator support. 5.1.1.6 High-Speed Disable Allows an OEM to force the Hub to configure as a Full-Speed device only (i.e. High-Spee
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet 5.1.1.12 Non-Removable Device 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.) This field is set by the OEM using either the SMBus or EEPROM interface options. When using the internal default option, the NON_REM[1:0] pins will designate the appropriate ports as being non- removable. 5.1.1.13 Self-Powered Port DISABLE During Self-Powered
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet 5.1.1.19 Self-powered Hub Controller Current When in Self-Powered configuration, Maximum current requirements of the Hub Controller in 2mA increments. This field is set by the OEM using either the SMBus or EEPROM interface options. 5.1.1.20 Bus-Powered Hub Controller Current When in Bus-Powered configuration, Maximum current requirements of the Hub Controller in 2mA increments. This field is set by the OEM using either the SMBus or EEPROM interf
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Integrated USB 2.0 Compatible 4-Port Hub Datasheet 5.2.1.2 Pull-Up Resistor The Circuit board designer is required to place external pull-up resistors (10KΩ recommended) on the SDA/SMBDATA & SCL/SMBCLK/CFG_SELO lines (per SMBus 1.0 Specification, and EEPROM manufacturer guidelines) to Vcc in order to assure proper operation. 5.2.1.3 I2C EEPROM Slave Address Slave address is 1010000. Note: 10-bit addressing is NOT supported. 5.2.2 In-Circuit EEPROM Programming The EEPROM can be programmed via AT
