V2EX slave select

Slave Select

释义 Definition(中文)

Slave select(常缩写为 SS)是电子与嵌入式系统中常见术语,指用于选通/启用某个从设备的控制信号线(例如在 SPI 总线中,由主控通过该信号选择某一片从设备进行通信)。在很多现代文档中也常用更中性的替代说法,如 Chip Select (CS)Device Select

发音 Pronunciation(IPA)

/slev slkt/

例句 Examples

The slave select pin is low, so the sensor is active.
从设备选择引脚为低电平,因此传感器处于被选通(可通信)状态。

In a multi-device SPI setup, the microcontroller toggles each slave select line to communicate with the correct peripheral without bus conflicts.
在多设备的 SPI 配置中,微控制器切换各个从设备选择线,以便与正确的外设通信并避免总线冲突。

词源 Etymology(中文)

该短语由 slave(从属设备)select(选择) 组合而成,源于早期数字通信/总线架构中的 masterslave(主从) 描述方式,强调由主控“选择”某个从设备参与通信。由于“slave”一词在社会文化语境中可能引发不适,工程领域近年来逐步采用 CS(chip select)SS(slave select)nCS(低有效片选) 等更偏中性的写法或替代术语。

相关词 Related Words

文学/著作中的用例 Literary Works(出现作品)

  • The AVR Microcontroller and Embedded Systems: Using Assembly and C(Mazidi 等)
  • *Programming Embedded Systems in C and C++*(Michael Barr)
  • Serial Peripheral Interface (SPI) Block Guide / Reference Manuals(多家 MCU 厂商参考手册中常见,如 NXP、Microchip、ST 等)
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