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參數(shù)資料
| 型號： | ISP1520BD,557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線控制器 |
| 英文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQFP64 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64 |
| 文件頁數(shù)： | 15/54頁 |
| 文件大?。?/td> | 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
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| ISP1520BD,557 | UNIVERSAL SERIAL BUS CONTROLLER, PQFP64 |
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| ISP1561BM,557 | UNIVERSAL SERIAL BUS CONTROLLER, PQFP128 |
| ISP1563BM | UNIVERSAL SERIAL BUS CONTROLLER, PQFP100 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISP1520BDGA | 功能描述:IC USB HUB CONTROLLER HS 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 應(yīng)用:PDA，便攜式音頻/視頻，智能電話 接口:I²C，2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱: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 接口集成電路 USB2 4 PORT HUB RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1520BDUM | 功能描述:IC USB HUB CONTROLLER HS 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 應(yīng)用:PDA，便攜式音頻/視頻，智能電話 接口:I²C，2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2 |
| ISP1521 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:IC USB HUB CONTROLLER HS 80-LQFP |
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