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參數(shù)資料
| 型號(hào)： | DLP-USB1 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | USB to FIFO Parallel Interface Module |
| 中文描述： | USB轉(zhuǎn)先進(jìn)先出并行接口模塊 |
| 文件頁(yè)數(shù)： | 2/6頁(yè) |
| 文件大?。?/td> | 67K |
| 代理商： | DLP-USB1 |
Revision 1.4
- 2 -
Application Notes
USB devices transfer data in packets. If data is to be sent from the PC, a packet is built up by the application
program and is sent via the device driver to the USB scheduler. This scheduler puts a request onto the list of tasks
for the USB host controller to perform. This will typically take at least 1 millisecond to execute because it will not
pick up the new request until the next ' USB Frame' (the frame period is 1 millisecond).
There is therefore a sizeable overhead (depending on your required throughput) associated with moving the data
from the application to the USB device. If data is sent 'byte at a time' by an application, this will severely limit the
overall throughput of the system as a whole.
It must be stressed that in order to achieve maximum throughput, application programs should send or receive data
using buffers and not individual characters.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DLP-USB1232H | 功能描述:界面模塊 H-Spd FT2232H Sngle- Chnl USB-UART/FIFO RoHS:否 制造商:4D Systems 產(chǎn)品:Serial Converters 通道/端口數(shù)量: 數(shù)據(jù)速率: 接口類型:USB, UART 工作電源電壓:3.3 V, 5 V 最大工作溫度: |
| DLP-USB232M | 功能描述:界面模塊 USB-UART Adapter RoHS:否 制造商:4D Systems 產(chǎn)品:Serial Converters 通道/端口數(shù)量: 數(shù)據(jù)速率: 接口類型:USB, UART 工作電源電壓:3.3 V, 5 V 最大工作溫度: |
| DLP-USB232M-G | 功能描述:界面模塊 USB-UART Adapter RoHS:否 制造商:4D Systems 產(chǎn)品:Serial Converters 通道/端口數(shù)量: 數(shù)據(jù)速率: 接口類型:USB, UART 工作電源電壓:3.3 V, 5 V 最大工作溫度: |
| DLP-USB232M-G2 | 功能描述:MODULE USB-TO-TTL SRL UART CONV 制造商:dlp design inc. 系列:- 零件狀態(tài):在售 類型:USB 至串行 轉(zhuǎn)換自（適配器端）:USB - B 2.0 母頭 轉(zhuǎn)換至（適配器端）:DIL（Dual Inline） 接口:UART 特性:- 包括:- 標(biāo)準(zhǔn)包裝:1 |
| DLP-USB232R | 功能描述:界面模塊 USB-TO-SERIAL UART INTERFACE MODULE RoHS:否 制造商:4D Systems 產(chǎn)品:Serial Converters 通道/端口數(shù)量: 數(shù)據(jù)速率: 接口類型:USB, UART 工作電源電壓:3.3 V, 5 V 最大工作溫度: |
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