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參數(shù)資料
| 型號： | DS2490Y |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 2/50頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC BRIDGE CLIP USB TO 1-W 24SOIC |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 應(yīng)用： | USB |
| 接口： | 1 線 |
| 電源電壓： | 3 V ~ 5.5 V |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SOIC W |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
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DS2490
10 of 50
USB CONFIGURATION Figure 9
1-WIRE
CLIENT
USB HOST
SYSTEM
SW
DS2490 USB 1-WIRE DEVICE
1-WIRE INTERFACE
TOUCH DETECTION
DEVICE STATE
USB ENUMERATION
USB CONTROL
1-WIRE CONTROL
1-WIRE
DATA I/O
EP2
EP3
EP1
EP0
default pipe
interrupt pipe
bulk pipe
USB PHYSICAL I/F
1-WIRE COMMUNICATION
1-WIRE MODE
Endpoint (EP) Summary Description
EP0 is the endpoint for the bi-directional default control pipe. It is used for the USB enumeration process,
USB core request communication, and all DS2490 specific command communication.
EP1 is the endpoint for an interrupt pipe (device to host) and is used to relay DS2490 status register data
and specific command execution completion and/or error information to the host. It is also used to inform
the host of 1-Wire device-attach detection. The polling period requested for EP1 is either 10ms or 1ms,
depending on the alternate interface setting of the 1-Wire interface. The default polling period for EP1 is
10ms.
EP2 is an endpoint for a bulk data out pipe (data from host) and is used to transmit 1-Wire device data
from the host to the DS2490. The information received at this endpoint will be transmitted as data on the
1-Wire bus.
EP3 is an endpoint for a bulk data in pipe (data to host) and is used to send data received by the DS2490
from the 1-Wire bus back to the host for processing.
1-Wire Interface Summary Description
The interface is the USB collection point for the four endpoints. Four alternate settings exist for the 1-
Wire interface which correspond to different operational modes for the pipes to EP1, EP2, and EP3. As
shown in Table 2, the alternate settings specify different polling periods for the interrupt pipe and
different maximum packet sizes for the two bulk pipes.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2490Y+ | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Tape and Reel |
| DS24B33 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
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