USB2512B Datasheet | SMSC

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. Features - - - - - - - - - Highlights - 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 USB251x B2 and USB251x Bi products support the USB Battery Charging specification Lead-free Ro HS pliant packages: - 36-pin QFN (6x6 mm) - 48-pin QFN (7x7 mm) - 64-pin QFN (9x9 mm) - - - 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 pliant with the USB 2.0 specification Enhanced OEM configuration options available through either a single serial I2C® EEPROM, or SMBus slave port Multi TRAKTM Port Map - USB251xi, USB2512Ai, and USB251x Bi products support the industrial temperature range of -40ºC to +85ºC Applications - - - - - - - - - - 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...