Hello, I am trying to to use a WIZ820io with a w5200 from a custom device, where I have generated the following lines for nSS, SCLK and MOSI: [20190319_134555] [20190319_134613] Signals from top to bottom: SS, SCLK, MOSI, MISO In this case, I am trying to read the SIPR register (0x000F - 0x0012…

Hi~aripod The value of SIPR register is empty after reset operation or Initial version. Therefore the value of SIPR register may not be. I recommend reading W5200 version register(0x001F). If you read version register(0x001F), you see the 0x03 through MISO. thanks, BR irina

No valid signal from MISO

TCP/IP Chip W5200

aripod March 26, 2019, 4:45pm 13

That is actually a very good point. In fact, if we check the screenshots from the other post, we can see that MISO is low.

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No valid signal from MISO

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