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ISP1123NB PDF预览

ISP1123NB

更新时间： 2024-09-15 22:47:59
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光电二极管数据传输时钟
页数 文件大小 规格书
49页 1057K
描述
Universal Serial Bus compound hub

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中文翻译

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ISP1123NB 技术参数

生命周期：Obsolete零件包装代码：DIP
包装说明：SDIP,针数：32
Reach Compliance Code：unknown风险等级：5.84
Is Samacsys：N地址总线宽度：
总线兼容性：I2C最大时钟频率：6 MHz
最大数据传输速率：1.5 MBps外部数据总线宽度：
JESD-30 代码：R-PDIP-T32长度：28.95 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：SDIP封装形状：RECTANGULAR
封装形式：IN-LINE, SHRINK PITCH认证状态：Not Qualified
座面最大高度：4.7 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：NO技术：CMOS
温度等级：INDUSTRIAL端子形式：THROUGH-HOLE
端子节距：1.778 mm端子位置：DUAL
宽度：10.16 mmuPs/uCs/外围集成电路类型：BUS CONTROLLER, UNIVERSAL SERIAL BUS
Base Number Matches：1

ISP1123NB 数据手册

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ISP1123  
Universal Serial Bus compound hub  
Rev. 01 — 5 October 1999  
Preliminary specification  
1. General description  
The ISP1123 is a compound 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, 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 traffic. The ISP1123  
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.  
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2. 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  
■ Downstream port 1 dedicated to a non-removable function, correctly reported in  
the related descriptors  
■ 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 global power switching for downstream ports  
■ Individual or ganged 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  
 
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