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參數(shù)資料
| 型號： | DS2490S |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Bus Controller |
| 英文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PDSO24 |
| 封裝： | 0.300 INCH, SO-24 |
| 文件頁數(shù)： | 51/51頁 |
| 文件大小： | 444K |
| 代理商： | DS2490S |
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DS2490
9 of 50
STRONG PULLUP TO 5V, PRE-DEFINED DURATION Figure 8
12V PROGRAMMING PULSE, PRE-DEFINED DURATION Figure 9
USB COMMUNICATION
Communication with the DS2490 is performed using USB standard requests, also referred to as core
commands or requests in this document, and DS2490 vendor specific USB commands. All command
communication with the DS2490 is performed over the default control pipe. Non-command
communication, including 1-Wire device data I/O and DS2490 status information, occurs in a vendor-
specific fashion over bulk and interrupt pipes. Configuration of the DS2490 USB controller is shown in
Figure 10. As shown, a Dallas Semiconductor vendor-specific 1-Wire device exists with a single 1-Wire
interface. The USB vendor-specific 1-Wire function of the DS2490 will be implemented and controlled
by the device driver at the device level of the device class hierarchy, i.e, vendor-specific commands, will
be directed to the device level. Within the 1-Wire interface, four endpoints exist to control and
communicate with the device. Four alternate settings of the 1-Wire interface exist that correspond to
different operating modes for the endpoints. Endpoint and interface descriptions are summarized in the
following paragraphs.
The DS2490 provides USB remote wake-up capability. Per the USB specification, if a device supports
remote wake-up, it must also provide the ability to enable or disable the remote wake-up function. In
addition, the remote wake-up feature must be disabled as the power up default or device reset state. When
the remote wake-up feature is enabled, the DS2490 will send USB resume signaling to a suspended host
system upon detecting a 1-Wire device attachment. It then becomes the responsibility of host system
software to resume operation and to determine what servicing is required for the 1-Wire device.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2502P | 128 X 8 OTPROM, PDSO6 |
| DS2502S | 128 X 8 OTPROM, PDSO8 |
| DS2502 | 128 X 8 OTPROM, PBCY3 |
| DS2505/T&R | 16K X 1 OTPROM, PBCY3 |
| DS2505P | 16K X 1 OTPROM, PDSO6 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2490S+ | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Rail/Tube 制造商:Maxim Integrated Products 功能描述:USB 1-W BRIDGE CHIP 24-SO LF 制造商:Maxim Integrated Products 功能描述:Bulk |
| DS2490S+T&R | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Tape and Reel |
| DS2490S+TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:USB to 1-Wire Bridge Chip |
| DS2490X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:USB to 1-Wire Bridge Chip(468.41 k) |
| DS2490X/T&R | 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
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