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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： | 54/54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
8 of 53
Philips Semiconductors
ISP1520
Hi-Speed USB hub controller
7.
Functional description
7.1 Analog transceivers
The integrated transceivers directly interface to USB lines. They can transmit and receive
serial data at high-speed (480 Mbit/s), full-speed (12 Mbit/s) and low-speed (1.5 Mbit/s).
7.2 Hub controller core
The main components of the hub core are:
Philips Serial Interface Engine (SIE)
Routing logic
Transaction Translator (TT)
Mini-Host Controller
Hub repeater
Hub controller
Port controller
Bit clock recovery
7.2.1 Philips serial interface engine
The Philips Serial Interface Engine (SIE) implements the full USB protocol layer. It is
completely hardwired for speed and needs no rmware intervention. The functions of this
block include: synchronization, pattern recognition, parallel or serial conversion, bit
(de-)stufng, CRC checking and generation, Packet IDentier (PID) verication and
generation, address recognition, and handshake evaluation and generation.
7.2.2 Routing logic
The routing logic directs signaling to appropriate modules (mini-Host Controller, Original
USB repeater and Hi-Speed USB repeater) according to the topology in which the hub is
placed.
7.2.3 Transaction translator
The Transaction Translator (TT) acts as a go-between mechanism that links devices
operating in Original USB mode and Hi-Speed USB upstream mode. For the ‘IN’ direction,
data is concatenated in TT buffers till the proper length is reached, before the host takes
the transaction. In the reverse direction (OUT), the mini-host dispenses the data
contained in TT buffers over a period that ts into the Original USB bandwidth. This
continues until all outgoing data is emptied. TT buffers are used only on split transactions.
7.2.4 Mini-Host Controller
The internal mini-host generates all the Original USB IN, OUT or SETUP tokens for the
downstream facing ports, while the upstream facing port is in high-speed mode. The
responses from Original USB devices are collected in TT buffers, until the end of the
complete split transaction clears TT buffers.
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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