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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： | 15/54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
21 of 53
Philips Semiconductors
ISP1520
Hi-Speed USB hub controller
9.
Hub controller description
Each USB device is composed of several independent logic endpoints. An endpoint acts
as a terminus of communication ow between the host and the device. At design time,
each endpoint is assigned a unique number (endpoint identier; see Table 13). The
combination of the device address (given by the host during enumeration), the endpoint
number, and the transfer direction allows each endpoint to be uniquely referenced.
The ISP1520 has two endpoints: endpoint 0 (control) and endpoint 1 (interrupt).
[1]
IN: input for the USB host; OUT: output from the USB host.
9.1 Endpoint 0
According to the USB specication, all devices must implement a default control endpoint.
This endpoint is used by the host to congure the USB device. It provides access to the
device conguration and allows generic USB status and control access.
The ISP1520 supports the following descriptor information through its control endpoint 0:
Device descriptor
Device_qualier descriptor
Conguration descriptor
Interface descriptor
Endpoint descriptor
Hub descriptor
Other_speed_conguration descriptor
The maximum packet size of this endpoint is 64 B.
9.2 Endpoint 1
Endpoint 1 can be accessed only after the hub has been congured by the host (by
sending the Set Conguration command). It is used by the ISP1520 to send the status
change information to the host.
Endpoint 1 is an interrupt endpoint. The host polls this endpoint once every 255 ms. After
the hub is congured, an IN token is sent by the host to request the port change status. If
the hub detects no change in the port status, it returns a NAK to this request, otherwise
the Status Change byte is sent. Table 14 shows the content of the change byte.
Table 13.
Hub endpoints
Function
Endpoint
identier
Transfer type
Maximum packet
size (bytes)
Hub ports 0 to 4
0
control
OUT
64
IN
64
1
interrupt
IN
1
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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