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MFG:PHI D/C:02+
Part Number: ISP1122
MFG: PHI
D/C: 02+
Description: The ISP1122 is a stand-alone Universal Serial Bus (USB) hub device which complies with USB Specificati...
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ISP1122
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DataSheet
General Description
ISP1122 General Description
The ISP1122 is a stand-alone Universal Serial Bus (USB) hub device which complies with USB Specification 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 configurable number of downstream ports, ranging from 2 to 5.
The ISP1122 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 ISP1122 has built-in overcurrent sense inputs, supporting individual and global overcurrent protection for downstream ports. All ports (including the hub) have GoodLink™ indicator outputs for easy visual monitoring of USB traffic. The ISP1122 has a serial I2C-bus interface for external EEPROM access and a reduced frequency (6 MHz) crystal oscillator. These features allow significant cost savings in system design and easy implementation of advanced USB functionality into PC peripherals.
ISP1122 Maximum Ratings
| Symbol | Parameter | Conditions | Min | Max | Unit |
| VCC | supply voltage | -0.5 | +6.0 | V | |
| VI | input voltage | -0.5 | VCC+0.5 | V | |
| Ilatchup | latch-up current | VI < 0 or VI > VCC | - | 200 | mA |
| Vesd | electrostatic discharge voltage | ILI < 15 A [1][2] | - | ±4000[3] | V |
| Tstg | storage temperature | -60 | +150 | ||
| Ptot | total power dissipation | - | 95 | mW |
[2] Values are given for device only; in-circuit Vesd(max) = ±8000 V.
[3] For open-drain pins Vesd(max) = ±2000 V.
ISP1122 Features
· High performance USB hub device with integrated hub repeater, hub controller,Serial Interface Engine (SIE), data transceivers and 3.3 V voltage regulator
· Complies with Universal Serial Bus Specification Rev. 1.1 and ACPI, OnNow and USB power management requirements
· Configurable from 2 to 5 downstream ports with automatic speed detection
· Internal power-on reset and low voltage reset circuit
· Supports bus-powered, hybrid-powered and self-powered application
· Individual or ganged power switching for downstream ports
· Individual or global port overcurrent protection with built-in sense circuits
· 6 MHz crystal oscillator with on-chip PLL for low EMI
· Visual USB traffic monitoring (GoodLink™) for hub and downstream ports
· I2C-bus interface to read vendor ID, product ID and configuration bits from external EEPROM
· Operation over the extended USB bus voltage range (4.0 to 5.5 V)
· Operating temperature range -40 to +85 °C
· 8 kV in-circuit ESD protection for lower cost of external components
· Full-scan design with high test coverage
· Available in 32-pin SDIP, SO and LQFP packages.
· Complies with Universal Serial Bus Specification Rev. 1.1 and ACPI, OnNow and USB power management requirements
· Configurable from 2 to 5 downstream ports with automatic speed detection
· Internal power-on reset and low voltage reset circuit
· Supports bus-powered, hybrid-powered and self-powered application
· Individual or ganged power switching for downstream ports
· Individual or global port overcurrent protection with built-in sense circuits
· 6 MHz crystal oscillator with on-chip PLL for low EMI
· Visual USB traffic monitoring (GoodLink™) for hub and downstream ports
· I2C-bus interface to read vendor ID, product ID and configuration bits from external EEPROM
· Operation over the extended USB bus voltage range (4.0 to 5.5 V)
· Operating temperature range -40 to +85 °C
· 8 kV in-circuit ESD protection for lower cost of external components
· Full-scan design with high test coverage
· Available in 32-pin SDIP, SO and LQFP packages.
ISP1122 Connection Diagram
ISP1122
PDF/DataSheet Download
- Datasheet: ISP1122
- File Size: 1187306 KB
- Manufacturer: PHILIPS [Philips Semiconductors]
- Click here to Download
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