Design of a Digital Voltmeter Based on FPGA and LTC2308 – Implementing SPI Protocol Communication with FPGA

Design of a Digital Voltmeter Based on FPGA and LTC2308 - Implementing SPI Protocol Communication with FPGA

Code Analysis The LTC2308 communicates via a standard 4-wire SPI digital interface. The LTC2308 analog-to-digital converter (ADC) chip has 8 ADC channels and a resolution of 12 bits, with an input signal clock frequency range not exceeding 500 KHz. According to the Nyquist sampling theorem, it is recommended that the input signal be below 250 … Read more

Do You Know That the SPI Protocol Has 4-Wire and 7-Wire Versions?

Do You Know That the SPI Protocol Has 4-Wire and 7-Wire Versions?

Hello everyone, today I want to talk about a very common communication protocol in embedded development—the SPI protocol. However, we will not discuss its basic principles today, but rather explore a detail that many people may not have noticed: the 4-wire and 7-wire versions of the SPI protocol. You might wonder, isn’t SPI just that … Read more