- 您現在的位置：買賣IC網 > PDF目錄360999 > ISP1521 (NXP Semiconductors N.V.) Hi-Speed Universal Serial Bus hub controller PDF資料下載
參數資料
| 型號： | ISP1521 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Hi-Speed Universal Serial Bus hub controller |
| 中文描述： | 高速通用串行總線控制器樞紐 |
| 文件頁數： | 24/53頁 |
| 文件大小： | 270K |
| 代理商： | ISP1521 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁
Philips Semiconductors
ISP1521
Hi-Speed USB hub controller
Product data
Rev. 03 — 24 November 2004
24 of 53
9397 750 13702
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
10. Hub controller description
Each USB device is composed of several independent logic endpoints. An endpoint
acts as a terminus of communication flow between the host and the device. At design
time, each endpoint is assigned a unique number (endpoint identifier; 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 ISP1521 has two endpoints: endpoint 0 (control) and endpoint 1 (interrupt).
[1]
IN: input for the USB host; OUT: output from the USB host.
10.1 Endpoint 0
According to the USB specification, all devices must implement a default control
endpoint. This endpoint is used by the host to configure the USB device. It provides
access to the device configuration and allows generic USB status and control access.
The ISP1521 supports the following descriptor information through its control
endpoint 0:
Device descriptor
Device_qualifier descriptor
Configuration descriptor
Interface descriptor
Endpoint descriptor
Hub descriptor
Other_speed_configuration descriptor.
The maximum packet size of this endpoint is 64 bytes.
10.2 Endpoint 1
Endpoint 1 can be accessed only after the hub has been configured by the host (by
sending the Set Configuration command). It is used by the ISP1521 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 configured, 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:
Function
Hub endpoints
Endpoint
identifier
0
Transfer type
Direction
[1]
Maximum packet
size (bytes)
64
64
1
Hub ports 0 to 7
control
OUT
IN
IN
1
interrupt
相關PDF資料 |
PDF描述 |
|---|---|
| ISP1521BE | Hi-Speed Universal Serial Bus hub controller |
| ISP1561 | ISP1561BM |
| ISP1561BM | ISP1561BM |
| ISP1562 | Hi-Speed Universal Serial Bus PCI Host Controller |
| ISP1562BE | Hi-Speed Universal Serial Bus PCI Host Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISP1521BE | 功能描述:IC USB HUB CONTROLLER HS 80-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標準包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應商設備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
| ISP1521BE,518 | 功能描述:USB 接口集成電路 USB2 7-PORT HUB CTRLR RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1521BE,551 | 功能描述:USB 接口集成電路 USB2 7 PORT HUB RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1521BE,557 | 功能描述:USB 接口集成電路 DO NOT USE ORDER -S OR -T PART RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數據速率: 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 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| ISP1521BE518 | 制造商:ST-Ericsson 功能描述:IC CONTROLLER USB HUB 80LQFP |
發布緊急采購，3分鐘左右您將得到回復。