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參數(shù)資料
| 型號： | SDM-USB-QS-S_ |
| 廠商： | Linx Technologies Inc |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | MODULE USB LOW SPEED |
| 產品目錄繪圖： | SDM-USB-QS-S Top SDM-USB-QS-S Side |
| 標準包裝： | 25 |
| 系列： | QS |
| 應用： | USB，外設 |
| 接口： | 并行/串行 |
| 電源電壓： | 4.35 V ~ 5.25 V |
| 封裝/外殼： | 16-SMD 模塊 |
| 供應商設備封裝： | 模塊 |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
| 其它名稱： | SDM-USB-QS-S SDM-USB-QS-S_-ND SDM-USB-QS1-S |
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16
Serial Number Considerations
The VID and PID are used by Windows to determine what devices are
attached to the bus and which drivers to load in order to communicate
with each device. A unique serial number is used to distinguish between
different devices of the same type so that the operating system can be
sure that it is communicating with the correct one. Windows will view every
different combination of VID, PID and serial number as a new device and
will start the “Found New Hardware” wizard for each one. This is an issue in
a mass production environment, so the QS modules are shipped with the
“Enable Serial Number” option disabled in the EEPROM. This prevents the
serial number from being used during ennumeration.
With the serial number disabled, Windows will track each device by
connection and assign a USB port to a particular device. If the device
is moved to another port, it will need to be reinstalled. The problem that
arises is that the device will be installed on the same PC multiple times,
once for each USB port into which it has been plugged.
It is recommended to set the “Enable Serial Number” option and to use
a unique serial number as a part of the final testing procedure of your
product. The QS EEPROM Programmer can be downloaded from the
Linx website and the EEPROM programming functions can be found in
Application Note AN-00200. These can be used as a part of an automated
test program at the end of the production line to program custom
descriptors and a unique serial number into the product.
Note: Avoid using the same serial number for multiple devices, as
it can cause a conflict in the operating system. Windows XP has a
particular problem with this and may crash if it sees two of the same
type of device with the same serial number on the same bus.
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相關代理商/技術參數(shù) |
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|---|---|
| SDM-USB-QS-S_ | 功能描述:MODULE USB LOW SPEED RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:QS 特色產品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
| SDMX-10TR | 制造商:BOURNS 制造商全稱:Bourns Electronic Solutions 功能描述:Surface Mount DIP Switch |
| SDMX-10-X | 功能描述:DIP 開關/ SIP 開關 10Pos SMT DIP RoHS:否 制造商:Omron Electronics 位置數(shù)量:10 開關類型:DIP 執(zhí)行器:Rotary 端子節(jié)距:2.54 mm 觸點形式: 端接類型:Solder Pin 電流額定值:100 mA 電壓額定值 DC: 工作溫度范圍: 安裝:Through Hole |
| SDMX-10XR | 制造商:BOURNS 制造商全稱:Bourns Electronic Solutions 功能描述:Surface Mount DIP Switch |
| SDMX-12TR | 制造商:BOURNS 制造商全稱:Bourns Electronic Solutions 功能描述:Surface Mount DIP Switch |
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