I2C/SPI Tap is an affordable sniffer that can monitor I2C and SPI communications. The Tap connects to your PC via a USB cable and is compatible with IO Ninja terminal/sniffer software.
Features
•Designed for use with IO Ninja software (http://ioninja.com/).
•Reliably captures I2C traffic at clock speeds of up to 700KHz and SPI traffic at clock speeds of up to 24MHz [Note 1]; all four SPI modes are supported.
•Incorporates an I2C and SPI test sequence generator for self-testing the Tap.
•Based on Intel MAX10 FPGA.
•Has 16 buffered IO lines D0~15 connected to a quick-release terminal block.
•All buffers act as level shifters allowing the Tap to work with logical signals in the 1.8V-5V range.
•Eight LEDs onboard:
oGreen Ready LED;
oTwo general-purpose green LEDs M0 and M1 for mode indication;
oFour yellow LEDs for indicating the state of IO lines D0~3 (sufficient for monitoring I2C and SPI communications);
oBlue Power LED.
•Built-in test generator outputs fixed I2C and SPI data sequences.
•High-speed (480Mbps) USB2.0 interface on a USB-C connector.
•Supplied with a USB-C cable.
•USB-powered, no additional external power necessary.
•Compact, outside dimensions only 82 x 74 x 30 mm.
•Product functionality may be expanded in the future:
oOnboard FPGA is reconfigurable via the USB interface;
oSixteen IO lines provide ample room to grow;
oIt is envisioned that the product's abilities may be expanded to handle such protocols as...
▪Quad-SPI;
▪SDIO;
▪Single-wire bus;
▪and more!
Note 1
This number depends on the host PC's performance and its "workload." Captured data may be lost if a PC's USB channel is unable to receive it in a timely manner. Our tests have shown that an average i7-based desktop PC (that is not performing other time-critical tasks) easily captures sustained SPI traffic with clock speeds up to 24MHz.