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ISP1122ABD PDF预览

ISP1122ABD

更新时间： 2024-11-05 22:05:11
品牌 Logo 应用领域
恩智浦 - NXP 总线控制器微控制器和处理器外围集成电路时钟
页数 文件大小 规格书
48页 1047K
描述
Universal Serial Bus stand-alone hub

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中文翻译

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ISP1122ABD 技术参数

生命周期：Obsolete零件包装代码：QFP
包装说明：LQFP,针数：32
Reach Compliance Code：unknown风险等级：5.84
Is Samacsys：N地址总线宽度：
最大时钟频率：6 MHz外部数据总线宽度：
JESD-30 代码：S-PQFP-G32长度：7 mm
端子数量：32最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：LQFP封装形状：SQUARE
封装形式：FLATPACK, LOW PROFILE认证状态：Not Qualified
座面最大高度：1.6 mm最大供电电压：5.5 V
最小供电电压：4 V标称供电电压：5 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：0.8 mm端子位置：QUAD
宽度：7 mmuPs/uCs/外围集成电路类型：BUS CONTROLLER, UNIVERSAL SERIAL BUS
Base Number Matches：1

ISP1122ABD 数据手册

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ISP1122A  
Universal Serial Bus stand-alone hub  
Rev. 01 — 27 March 2000  
Preliminary specification  
1. General description  
The ISP1122A 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 ISP1122A 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 ISP1122A 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 ISP1122A  
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.  
2. Features  
c
c
■ 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  
 
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