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DS2401+T&R 产品设计参考手册 - Maxim Integrated（美信）
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Maxim Integrated（美信）
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接口芯片
封装:
TO-226-3
描述:
MAXIM INTEGRATED PRODUCTS DS2401+T&R 芯片, 特殊功能
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DS2401+T&R数据手册
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若手册格式错乱，请下载阅览PDF原文件
Figure 3. API usage flow.
The nature of i
Button communication is inherently 'touch.' This means that contact with the device is not
always reliable. The i
Button might be inserted into the reader and have intermittent contact during the read.
Consequently a consistent methodology of error recovery must be rigorously followed. This usually entails
doing retries when a spurious error is detected and utilizing CRC checks in data communication. The file I/O
functions in the APIs use a standard file structure detailed in the 1-Wire File Structure section of application
note 114, "1-Wire File Structure." This structure uses a CRC16 on every page of data to quickly verify the
validity of the data being read. Most of the 1-Wire API functions have little or no automatic retries. The retries
are under application control. See the application note 159, "Software Methods to Achieve Robust 1-Wire®
Communication in i
Button® Applications," for methodology of error recovery and risk assessment in doing
1-Wire communication.
API Selection
There are principally five different APIs that are considered in this document. The APIs operate on different
platforms, use different languages, and have different capabilities. Table 2 displays these five APIs with a
brief description, and Table 3 maps the operating system with the available APIs divided by language.
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