Solutions to the challenges of SPI communication distance and maximum speed.
The Serial Peripheral Interface (SPI) is used as a means of communication between processors and peripheral devices in many applications. SPI was originally designed for short-distance communication between devices on the same board. However, with the development of various SPI devices today, there is an increasing demand for long-distance SPI communication beyond the confines of a single board. - It is a module that converts SPI signals into noise-resistant differential signals to extend communication distances. - It extends the communication data between the controller and the peripheral without altering it, only converting the physical signals. - The extension cable repurposes commercially available DisplayPort cables, making it highly versatile and cost-effective to implement. - The cable also includes a power line, so there is no need to provide a separate power source for the slave device. - In addition to the four SPI signals, one signal line can be used for interrupt requests from the slave to the master. - On the master side, the MISO signal becomes tri-state in response to the input of the CS signal, allowing it to be used in a multi-drop environment.
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basic information
Available signals: SCK, MOSI, MISO, CS, 1 general-purpose signal from the slave to the master Power supply voltage: 4.5V to 5.5V SPI logic voltage: 3.3V (absolute maximum rating 3.6V) CS signal logic: HIGH, LOW, or always output can be selected with an internal jumper (active LOW at the time of product shipment) Slave side output power: 5V and 3.3V, up to a total of 200mA can be drawn (5V voltage depends on the voltage input to the master) SPI signal connector: JST XH connector Master: XHP-7 Slave: XHP-8 Main body current consumption: approximately 70mA Product size: 50×50×25mm Operating temperature range: -10℃ to +60℃ (must not condense) Maximum clock frequency: Varies with extension distance and SPI device response speed, theoretical value of signal conversion element is 200MHz Maximum extension distance: Varies with clock frequency and SPI device response speed
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Applications/Examples of results
Extending the distance of SPI communication
Company information
Our company has been engaged in contract development in a wide range of fields, from digital and analog electronic circuit design to application software for personal computers, for 40 years in Kyoto. Leveraging this expertise, we specialize in: - Measurement instruments - Converters - Control boards We provide services tailored to your needs, from development and prototyping to mass production, so please feel free to contact us through our website. http://www.datatecno.co.jp/contact/ Additionally, we develop and sell our own unique products, including: - SD Logger - Analog Input Integrated SD Logger - Scan Converter.
