General description

The ISP1521 is a stand-alone Universal Serial Bus (USB) hub controller IC that complies with Universal Serial Bus Specification Rev. 2.0. It supports data transfer at high-speed (480 Mbit/s), full-speed (12 Mbit/s) and low-speed (1.5 Mbit/s)

特性 Features

■ Complies with:

◆ Universal Serial Bus Specification Rev. 2.0

◆ Advanced Configuration and Power Interface (ACPI?), OnNow? and USB power management requirements

■ Supports data transfer at high-speed (480 Mbit/s), full-speed (12 Mbit/s) and low-speed (1.5 Mbit/s)

■ Self-powered capability

■ USB suspend mode support

■ Configurable number of ports

■ Internal power-on reset and low voltage reset circuit

■ Port status indicators

■ Integrates high performance USB interface device with hub handler, Philips Serial Interface Engine (SIE) and transceivers

■ Built-in overcurrent detection circuit

■ Individual or ganged power switching, individual or global overcurrent protection, and non-removable port support by I/O pins configuration

■ Simple I2C-bus (master/slave) interface to read device descriptor parameters, language ID, manufacturer ID, product ID, serial number ID and string descriptors from a dedicated external EEPROM, or to allow the microcontroller to set up hub descriptors

■ Visual USB traffic monitoring (GoodLink?) for the upstream facing port

■ Uses 12 MHz crystal oscillator with on-chip Phase-Locked Loop (PLL) for low ElectroMagnetic Interference (EMI)

■ Supports temperature range from ?40 °C to +70 °C

■ Available in LQFP80 package.

Applications

■ Monitor hubs

■ Docking stations for notebooks

■ Internal hub for USB motherboards

■ Hub for extending Easy PCs

■ Hub boxes.