Universal Serial Bus Compound Hub - Nxp Semiconductors

The ISP1123 is a compound Universal Serial Bus (USB) hub device which complies with USB Specication Rev. 1.1. It integrates a Serial Interface Engine (SIE), hub repeater, hub controller, USB data transceivers and a 3.3 V voltage Regulator It has a congurable number of downstream ports, ranging from 2 to 5, with one port dedicated to an embedded or non-removable function. The ISP1123 CAN be bus-powered, self-powered or hybrid-powered. When it is hybrid-powered the hub functions are powered by the upstream power supply (VBUS), but the downstream ports are powered by an external 5 Volt supply. The low power consumption in suspend mode allows easy design of equipment that is compliant with the ACPI, OnNow and USB Power Management requirements. The ISP1123 has built-in overcurrent sense inputs, supporting individual and ganged mode overcurrent protection for downstream ports. All ports (including the hub) have GoodLink indicator outputs for easy visual monitoring of USB trafc. The ISP1123 has a serial I 2C-bus Interface for external EEPROM access and a reduced frequency (6 MHz) crystal Oscillator These features allow signicant cost savings in system design and easy implementation of advanced USB functionality into PC peripherals. By NXP Semiconductors
ISP1123 's PackagesISP1123 's pdf datasheet
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ISP1123 Pinout, Pinouts
ISP1123 pinout,Pin out
This is one package pinout of ISP1123,If you need more pinouts please download ISP1123's pdf datasheet.

ISP1123 Application circuits
ISP1123 circuits
This is one application circuit of ISP1123,If you need more circuits,please download ISP1123's pdf datasheet.


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