欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數(shù)資料
型號(hào)： ISP1122ABD
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 總線控制器
英文描述： Universal Serial Bus stand-alone hub
中文描述： UNIVERSAL SERIAL BUS CONTROLLER, PQFP32
封裝： 7 X 7 X 1.40 MM, PLASTIC, LQFP-32
文件頁(yè)數(shù)： 11/48頁(yè)
文件大小： 1150K
代理商： ISP1122ABD
Philips Semiconductors
ISP1122A
USB stand-alone hub
Preliminary specification
Rev. 01 — 27 March 2000
11 of 48
9397 750 06986
Philips Electronics N.V. 2000. All rights reserved.
8.
Endpoint descriptions
Each USB device is logically composed of several independent endpoints. An
endpoint acts as a terminus of a communication flow between the host and the
device. At design time each endpoint is assigned a unique number (endpoint
identifier, see
Table 5
). 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 ISP1122A has two endpoints, endpoint 0 (control) and endpoint 1 (interrupt).
[1]
IN: input for the USB host; OUT: output from the USB host.
8.1 Hub endpoint 0 (control)
All USB devices and functions must implement a default control endpoint (ID = 0).
This endpoint is used by the host to configure the device and to perform generic USB
status and control access.
The ISP1122A hub supports the following USB descriptor information through its
control endpoint 0, which can handle transfers of 64 bytes maximum:
Device descriptor
Configuration descriptor
Interface descriptor
Endpoint descriptor
Hub descriptor
String descriptor.
8.2 Hub endpoint 1 (interrupt)
Endpoint 1 is used by the ISP1122A hub to provide status change information to the
host. This endpoint can be accessed only after the hub has been configured by the
host (by sending the Set Configuration command).
Endpoint 1 is an interrupt endpoint: the host polls it once every 255 ms by sending an
IN token. If the hub has detected no change in the port status it returns a NAK (Not
AcKnowledge) response to this request, otherwise it sends the Status Change byte
(see
Table 6
).
Table 5:
Function
Hub endpoints
Ports
Endpoint
identifier
Transfer
type
Direction
[1]
Max. packet
size (bytes)
64
64
1
Hub
0: upstream
1 to 5: downstream
0
control
OUT
IN
IN
1
interrupt
相關(guān)PDF資料
PDF描述
ISP1122AD Universal Serial Bus stand-alone hub
ISP1122ANB Universal Serial Bus stand-alone hub
ISP1122 Universal Serial Bus stand-alone hub
ISP1122BD Universal Serial Bus stand-alone hub
ISP1122D Universal Serial Bus stand-alone hub
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISP1122AD 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub
ISP1122ANB 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub
ISP1122BD 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub
ISP1122D 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub
ISP1122NB 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Universal Serial Bus stand-alone hub
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*
主站蜘蛛池模板： 高阳县| 息烽县| 四子王旗| 嘉黎县| 武平县| 徐水县| 宿迁市| 黑河市| 东辽县| 会泽县| 建宁县| 白朗县| 横峰县| 皋兰县| 尚志市| 濮阳县| 连山| 灵川县| 石河子市| 双峰县| 桑日县| 安徽省| 上饶市| 远安县| 江北区| 梧州市| 长宁县| 梓潼县| 库车县| 阿合奇县| 墨竹工卡县| 安阳县| 信阳市| 富裕县| 离岛区| 驻马店市| 汾西县| 自贡市| 营口市| 会泽县| 张家川|