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USB2524 数据表(PDF) 1 Page - Microchip Technology |
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USB2524 数据表(HTML) 1 Page - Microchip Technology |
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1 / 58 page  2013 - 2016 Microchip Technology Inc. DS00001588B-page 1 Highlights • USB 2.0 Compatible 4-Port Hub with two upstream host port connections - Provides electronic reconfiguration and re- assignment of any of its 4 downstream ports to either of two upstream host ports (“on-the- fly”) - Allows multiple USB hosts to share peripher- als and enables a user to dynamically assign host ownership - Embedded Mode - 8 (predefined, OEM programmable) configurations for port assignment are selectable via three external control signals - Peripheral Mode - Dedicated select pin for every downstream port (total of 4), selectable edge or level triggered in order to support a wide range of possible switch configurations and styles - Each host has a dedicated Single Transac- tion Translator (Single-TT) for supporting FS/ LS devices, or can also operate in Multi-TT mode where each downstream port has a dedicated Transaction Translator. • Downstream ports can be disabled or defined as non-removable • Switching hub can be configured as compound device for support of ‘embedded’ USB peripherals • Multiple LED modes for maximum implementation flexibility - USB Mode - 2 Single-color LEDs for each downstream port (total of 8 LEDs) - Host Ownership Mode - 8 Single-Color LEDs indicate which upstream host each of the downstream ports are assigned to. - Host Ownership & Port Speed Mode - 8 Dual- Color LEDs are used to indicate which upstream host each of the downstream ports are assigned to, while simultaneously indicat- ing downstream port connection speed. • Enhanced configuration options available through either a Single Serial I2C EEPROM, or SMBus Slave Port - VID/PID/DID - Port Configuration - String Descriptors (each can support a maxi- mum length of 31 characters) - Custom Manufacturer String - Custom Product String - Custom Serial String - Assignment of downstream ports to upstream hosts - Switching mechanism selection • Hardware Strapping options allow for configura- tion without an external EEPROM or SMBus Host - Default VID/PID/DID, allows functionality when configuration EEPROM is absent • Complete USB Specification 2.0 Compatibility - Includes USB 2.0 Hi-Speed Transceivers - High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and Low-Speed (1.5Mbits/s) compatible - Full power management with choice of Indi- vidual or Ganged power control • On-Board 24MHz Crystal Driver Circuit or 24 MHz external clock driver • Internal PLL for 480MHz USB 2.0 Sampling • Internal 1.8V Linear Voltage Regulator • Integrated USB termination and Pull-up/Pull-down resistors • Internal Short Circuit protection of USB differential signal pins • 1.8 Volt Low Power Core Operation • 3.3 Volt I/O with 5V Input Tolerance • 56-Pin QFN RoHS Compliant Package USB2524 USB MultiSwitch Hub |
类似零件编号 - USB2524 |
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类似说明 - USB2524 |
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