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Ethernet Tap is an affordable sniffer for monitoring Ethernet traffic flowing through a single Ethernet connection. The Tap passes the Ethernet traffic through with a delay equal to about 5.2uS.
The I2C/SPI Tap for IO Ninja is an affordable sniffer for monitoring I2C
and SPI
communications. Our sniffer allows you to tap into the lines of I2C
and SPI
links and immediately view the captured data bytes in IO Ninja software — in real time and using our innovative dual-hex view tailor-suited for the inherently full-duplex SPI
data.
All inputs of the I2C/SPI Tap are available on a convenient quick-release terminal block. The board also features LEDs for the I2C
and SPI
line status indication (SCL
, SDA
, CLK
, MOSI
, MISO
, SS
), which helps with quick troubleshooting of wiring issues.
This sniffer device must be used with the I2C/SPI Tap plugin.
I2C
and SPI
firmware (FPGA configurations) for this Tap include test generators producing sustained test traffic at 400KHz and 24MHz respectively.
Test I2C
signals are generated on D14
(SDA
) and D15
(SCL
).
Test SPI
signals are generated on D12
(SS
), D13
(MISO
), D14
(MOSI
), and D15
(SCLK
).
To receive the test traffic, connect two or four wires as shown on the diagram below:
USB-C
cable;I2C
and SPI
test sequence generator for self-testing the Tap;D0
..D15
connected to a quick-release terminal block;READY
LED;M0
and M1
for mode and status indication;D0
..D3
(sufficient for I2C and SPI);POWER
LED;Quad-SPI
;SDIO
;Parameter | Value |
---|---|
USB: | USB 2.0, high-speed (480MHz), USB-C connector |
Maximum I2C speed: | Up to 700KHz |
Maximum SPI speed: | Up to 24MHz |
Operating temperature: | 0 to +60 degrees C |
Operating relative humidity: | 10% to 90% |
Mechanical dimensions: | 82 x 74 x 30 mm |
This number depends on the host PC's performance and its workload. Captured data may be lost if 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.
Resource | Description |
---|---|
Hardware Manual (HTML) |
This is the I2C/SPI Tap chapter in the IO Ninja hardware manual. |
Hardware Manual (PDF) |
This is a PDF rendition of the above online HTML manual for downloading and printing. |
Manufacturer | Tibbo |
---|
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