High performance, low-power USB 2.0 Hub, optimized for low cost designs with minimum Bill-of-material USB 2.0 hub controller
Compliant with USB 2.0 specification, TID# 30000060
Up to four downstream ports support
Downstream ports are backward compatible with FS, LS
Single transaction translator (TT) for low cost
Very low power consumption
Supports bus-powered and self-powered modes
Auto switching between bus-powered and self-powered
Single MCU with 2K ROM and 64 byte RAM
Lowest power consumption
Highly integrated solution for reduced BOM cost
Internal regulator – single power supply 5 V required
Provision of connecting 3.3 V with external regulator
Integrated upstream pull-up resistor
Integrated pull-down resistors for all downstream ports
Integrated upstream/downstream termination resistors
Integrated port status indicator control
12 MHz +/– 500 ppm external crystal with drive level 600 μW
(integrated PLL) clock input with optional 27/48 MHz
oscillator clock input
Internal power failure detection for ESD recovery
Downstream port management
Support individual and ganged mode power management
Overcurrent detection
Two port status indicators per downstream port
Maximum configurability
VID and PID are configurable through external EEPROM
Number of ports, removable/non-removable ports are
configurable through EEPROM and I/O pin configuration
I/O pins can configure gang/individual mode power switching, reference clock source and polarity of powerswitch enable pin
Configuration options also available through mask ROM
Available in space saving 48-pin (7 x 7 mm) TQFP and 28-pin (5 x 5 mm) QFN packages
Supports 0 °C to 70 °C temperature range