USB2507-ADT中文资料Integrated USB 2.0 Compatible 7-Port Hub数据手册Microchip规格书

描述 Description

General Description
The SMSC 7-Port Hub is fully compliant with the USB 2.0 Specification and will attach to a USB host as a Full-Speed Hub or as a Full-/High-Speed Hub. The 7-Port Hub supports Low-Speed, Full-Speed, and High-Speed (if operating as a High-Speed Hub) downstream devices on all of the enabled downstream ports.
A dedicated Transaction Translator (TT) is available for each downstream facing port. This architecture ensures maximum USB throughput for each connected device when operating with mixed-speed peripherals.
The Hub works with an external USB power distribution switch device to control VBUS switching to downstream ports, and to limit current and sense over-current conditions.
All required resistors on the USB ports are integrated into the Hub. This includes all series termination resistors on D+ and D– pins and all required pull-down and pull-up resistors on D+ and D– pins. The over-current sense inputs for the downstream facing ports have internal pull-up resistors.
Throughout this document the upstream facing port of the hub will be referred to as the upstream port, and the downstream facing ports will be called the downstream ports.PRODUCT FEATURES
■ Integrated USB 2.0 Compatible 7-Port Hub
   — 7 Transaction Translators for highest performance
   — High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and Low-Speed (1.5Mbits/s) compatible
   — Full power management with per port or ganged, selectable power control
   — Detects Bus-Power/Self-Power source and changes mode automatically
■ Complete USB Specification 2.0 Compatibility
   — Includes USB 2.0 Transceivers
■ VID/PID/DID, and Port Configuration for Hub via:
   — Single Serial I2C EEPROM
   — SMBus Slave Port
■ Default VID/PID/DID, allows functionality when configuration EEPROM is absent
■ Hardware Strapping options allow for configuration without an external EEPROM or SMBus Host
■ 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
■ 80-Pin TQFP lead-free RoHS compliant package

特性 Features

■ Integrated USB 2.0 Compatible 7-Port Hub
   — 7 Transaction Translators for highest performance
   — High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and Low-Speed (1.5Mbits/s) compatible
   — Full power management with per port or ganged, selectable power control
   — Detects Bus-Power/Self-Power source and changes mode automatically
■ Complete USB Specification 2.0 Compatibility
   — Includes USB 2.0 Transceivers
■ VID/PID/DID, and Port Configuration for Hub via:
   — Single Serial I2C EEPROM
   — SMBus Slave Port
■ Default VID/PID/DID, allows functionality when configuration EEPROM is absent
■ Hardware Strapping options allow for configuration without an external EEPROM or SMBus Host
■ 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
■ 80-Pin TQFP lead-free RoHS compliant package

简介

USB2507-ADT属于集成电路（IC）的控制器。由制造生产的USB2507-ADT控制器该系列产品主要用于在采用不同通信协议和/或信令方法的端点之间提供信息连接。示例包括将 I2C 总线连接到 UART，将 USB 连接到 I2C、SPI、以太网或 UART、以太网 MAC 和 PHY 等的器件。此外，还包括用于通过为点对点通信设计的接口建立多路连接的器件，例如 USB 集线器控制器。