ISP1521

ISP1521 General Description

General descriptionThe 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)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.

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.

Specifications