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参数资料
| 型号： | ISP1520BD,557 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 总线控制器 |
| 英文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQFP64 |
| 封装： | 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64 |
| 文件页数： | 2/54页 |
| 文件大小： | 288K |
| 代理商： | ISP1520BD,557 |
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ISP1520_4
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 04 — 28 April 2006
9 of 53
Philips Semiconductors
ISP1520
Hi-Speed USB hub controller
7.2.5 Hub repeater
A hub repeater manages connectivity on a per packet basis. It implements packet
signaling connectivity and resume connectivity. There are two repeaters in the ISP1520: a
Hi-Speed USB repeater and an Original USB repeater. The only major difference between
these two repeaters is the speed at which they operate. When the hub is connected to an
Original USB system, it automatically switches itself to function as an Original USB hub.
7.2.6 Hub and port controllers
The hub controller provides status report. The port controller provides control for
individual downstream facing ports; it controls the port routing module. Any port status
change will be reported to the host using the hub status change (interrupt) endpoint.
7.2.7 Bit clock recovery
The bit clock recovery circuit extracts the clock from the incoming USB data stream.
7.3 Phase-locked loop clock multiplier
A 12 MHz-to-480 MHz clock multiplier Phase-Locked Loop (PLL) is integrated on-chip.
This allows the use of low-cost 12 MHz crystals. The low crystal frequency also minimizes
EMI. No external components are required for the operation of the PLL.
7.4 I2C-bus controller
A simple serial I2C-bus interface is provided to transfer vendor ID, product ID and string
descriptor from an external I2C-bus EEPROM or microcontroller. A master/slave I2C-bus
protocol is implemented according to the timing requirements as mentioned in I2C-bus
standard specications. The maximum data count during I2C-bus transfers for the
ISP1520 is 256 B.
7.5 Overcurrent detection circuit
An overcurrent detection circuit is integrated on-chip. The main features of this circuit are:
self reporting, automatic resetting, low-trip time and low cost. This circuit offers an easy
solution at no extra hardware cost on the board.
7.6 GoodLink
Indication of a good USB connection is provided through the GoodLink technology. An
LED can be directly connected to pin HUBGL_N through an external 330
resistor.
During enumeration, the LED momentarily blinks on. After successful conguration, the
LED blinks off for 100 ms upon each transaction.
This feature provides a user-friendly indication of the status of the hub, the connected
downstream devices, and the USB trafc. It is a useful diagnostics tool to isolate faulty
USB equipment, and helps to reduce eld support and hotline costs.
7.7 Power-on reset
The ISP1520 has an internal Power-On Reset (POR) circuit.
相关PDF资料 |
PDF描述 |
|---|---|
| ISP1520BD,557 | UNIVERSAL SERIAL BUS CONTROLLER, PQFP64 |
| ISP1561BM,557 | UNIVERSAL SERIAL BUS CONTROLLER, PQFP128 |
| ISP1561BM,557 | UNIVERSAL SERIAL BUS CONTROLLER, PQFP128 |
| ISP1563BM | UNIVERSAL SERIAL BUS CONTROLLER, PQFP100 |
| ISP1563BM,557 | UNIVERSAL SERIAL BUS CONTROLLER, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISP1520BDGA | 功能描述:IC USB HUB CONTROLLER HS 64-LQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:- 标准包装:3,000 系列:- 应用:PDA，便携式音频/视频，智能电话 接口:I²C，2 线串口 电源电压:1.65 V ~ 3.6 V 封装/外壳:24-WQFN 裸露焊盘 供应商设备封装:24-QFN 裸露焊盘（4x4） 包装:带卷 (TR) 安装类型:表面贴装 产品目录页面:1015 (CN2011-ZH PDF) 其它名称:296-25223-2 |
| ISP1520BD-S | 制造商:ST-Ericsson 功能描述:Universal Serial Bus Hub Controller 64-Pin LQFP |
| ISP1520BD-T | 功能描述:USB 接口集成电路 USB2 4 PORT HUB RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| ISP1520BDUM | 功能描述:IC USB HUB CONTROLLER HS 64-LQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:- 标准包装:3,000 系列:- 应用:PDA，便携式音频/视频，智能电话 接口:I²C，2 线串口 电源电压:1.65 V ~ 3.6 V 封装/外壳:24-WQFN 裸露焊盘 供应商设备封装:24-QFN 裸露焊盘（4x4） 包装:带卷 (TR) 安装类型:表面贴装 产品目录页面:1015 (CN2011-ZH PDF) 其它名称:296-25223-2 |
| ISP1521 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:IC USB HUB CONTROLLER HS 80-LQFP |
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