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The SPI is a high-speedsynchronous serial input/output port that allows a serial bit stream of programmed length (1 to 16 bits) to be shifted into and out of the device at a programmed bit-transferrate.
The most common serial interface used in precision data converters is a standard known as Serial Peripheral Interface abbreviated as SPI. There are two control lines for SPI. The controller, usually a microcontroller or DSP, controls a peripheral select and the serial clock used for data synchronization.
The SPI bus interface is widely used for synchronous data transmission because this interface allows relatively high transmission rates with versatile configurations.
This article provides a brief description of the SPI interface followed by an introduction to Analog Devices’ SPI enabled switches and muxes, and how they help reduce the number of digital GPIOs in system board design. SPI is a synchronous, full duplex main-subnode-based interface.
Serial Peripheral Interface (SPI) is an interface bus commonly used to send data between microcontrollers and small peripherals such as shift registers, sensors, and SD cards. It uses separate clock and data lines, along with a select line to choose the device you wish to talk to.
converters. In this video, we describe the timing requirements and switching characteristics between digital lines associated with Serial Peripheral Interface or SPI communication. We'll discuss timing and switching specifications that you may see in a datasheet. Then we'll describe an example of the timing diagram for one of TI’s
The simplified SPI block diagram shows the basic control mechanisms and functions. There are 4 I/O signals associated with the SPI peripheral. All of the data passes through receive and transmit buffers via their specific interfaces. The control block features are enabled or disabled depending on the configuration.
