USB2504/USB2504A Integrated USB 2.0 Compatible 4-Port Hub PRODUCT FEATURES Data Brief Integrated USB 2.0 Compatible 4-Port Hub -- 4 Transaction Translators for highest performance -- High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and Low-Speed (1.5Mbits/s) compatible -- Full power management with per port or ganged, selectable power control -- Detects Bus-Power/Self-Power source and changes mode automatically Complete USB Specification 2.0 Compatibility VID/PID/DID, and Port Configuration for Hub via: -- Includes USB 2.0 Transceivers -- Single Serial I2C EEPROM -- SMBus Slave Port On-Board 24MHz Crystal Driver Circuit or 24 MHz external clock driver Internal PLL for 480MHz USB 2.0 Sampling Internal 1.8V Linear Voltage Regulator Integrated USB termination and Pull-up/Pull-down resistors Internal Short Circuit protection of USB differential signal pins 1.8 Volt Low Power Core Operation 3.3 Volt I/O with 5V Input Tolerance 64-Pin TQFP lead-free RoHS compliant package Default VID/PID/DID, allows functionality when configuration EEPROM is absent Hardware Strapping options allow for configuration without an external EEPROM or SMBus Host SMSC USB2504/USB2504A PRODUCT PREVIEW Revision 2.3 (08-27-07) Integrated USB 2.0 Compatible 4-Port Hub 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 (c) 2007 SMSC or its subsidiaries. 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Revision 2.3 (08-27-07) 2 PRODUCT PREVIEW SMSC USB2504/USB2504A Integrated USB 2.0 Compatible 4-Port Hub 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 maximum USB throughput for each connected device when operating with mixed-speed peripherals. The Hub works with an external USB power distribution switch device to control VBUS switching to downstream ports, and to limit current and sense over-current conditions. All required resistors on the USB ports are integrated into the Hub. This includes all series termination resistors on D+ and D- pins and all required pull-down and pull-up resistors on D+ and D- pins. The over-current sense inputs for the downstream facing ports have internal pull-up resistors. Throughout this document the upstream facing port of the hub will be referred to as the upstream port, and the downstream facing ports will be called the downstream ports. OEM Selectable Features A default configuration is available in the USB2504/USB2504A following a reset. This configuration may be sufficient for some applications. Strapping option pins make it possible to modify a limited subset of the configuration options. The USB2504/USB2504A may also be configured by an external EEPROM or a microcontroller. When using the microcontroller interface, the Hub appears as an SMBus slave device. If the Hub is pinstrapped 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 4-Port Hub supports several OEM selectable features: Operation as a Self-Powered USB Hub or as a Bus-Powered USB Hub. Operation as a Dynamic-Powered Hub (Hub operates as a Bus-Powered device if a local power source is not available and switches to Self-Powered operation when a local power source is available). Multiple Transaction Translator (Multi-TT) or Single-TT support. Optional OEM configuration via I2C EEPROM or via the industry standard SMBus interface from an external SMBus Host. Port power switching on an individual or ganged basis. Port over-current monitoring on an individual or ganged basis. LED indicator support. Compound device support (port is permanently hardwired to a downstream USB peripheral device). Hardware strapping options enable configuration of the following features. Non-Removable Ports Port Power Polarity (active high or active low logic) Port Disable LED support MTT enable Ganged Vs Port power switching and over-current sensing SMSC USB2504/USB2504A 3 PRODUCT PREVIEW Revision 2.3 (08-27-07) Integrated USB 2.0 Compatible 4-Port Hub Block Diagram Upstream Upstream 24 MHz USB Data VBUS Crystal Upstream PHY VBUS Power Detect 3.3V To EEPROM Pin 1.8V Strapping or SMBus Master Cap Options SD SCL Internal Defaults Select 1.8V Reg. PLL Controller SIE Repeater TT #1 TT #2 Serial Interface TT #3 TT #4 Port Controller Routing Logic Port #1 OC Sense Downstream Switch Driver PHY #1 LED Drivers ... Downstream OC Switch/LED USB Data Sense Drivers Port #4 OC Sense Downstream Switch Driver PHY #4 LED Drivers Downstream OC Switch/LED USB Data Sense Drivers Figure 1 4-Port Block Diagram Revision 2.3 (08-27-07) 4 PRODUCT PREVIEW SMSC USB2504/USB2504A Integrated USB 2.0 Compatible 4-Port Hub Package Outline Figure 2 64 Pin TQFP Package Outline (10x10x1.4 mm body - 2 mm footprint) Table 1 64 Pin TQFP Package Parameters A A1 A2 D D1 E E1 H L L1 e q W R1 R2 ccc MIN NOMINAL MAX REMARKS ~ 0.05 1.35 11.80 9.80 11.80 9.80 0.09 0.45 ~ ~ ~ ~ ~ ~ ~ ~ ~ 0.60 1.00 0.50 Basic ~ 0.22 ~ ~ ~ 1.60 0.15 1.45 12.20 10.20 12.20 10.20 0.20 0.75 ~ Overall Package Height Standoff Body Thickness X Span X body Size Y Span Y body Size Lead Frame Thickness Lead Foot Length Lead Length Lead Pitch Lead Foot Angle Lead Width Lead Shoulder Radius Lead Foot Radius Coplanarity 0o 0.17 0.08 0.08 ~ 7o 0.27 ~ 0.20 0.08 Notes: 1. Controlling Unit: millimeter. 2. Tolerance on the true position of the leads is 0.04 mm maximum. 3. Package body dimensions D1 and E1 do not include the mold protrusion. Maximum mold protrusion is 0.25 mm per side. 4. Dimension for foot length L measured at the gauge plane 0.25 mm above the seating plane. 5. Details of pin 1 identifier are optional but must be located within the zone indicated. SMSC USB2504/USB2504A 5 PRODUCT PREVIEW Revision 2.3 (08-27-07) Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Microchip: USB2504A-JT USB2504-JT