SDIO bandwidth in Jetson Nano

Hi. We are planning to use the SDIO interface on the Nano for a peripheral. In the Jetson Nano Datasheet Chapter 4.5 we see the Max Bandwidth for SDIO is listed as “104 MBps”. We would like to confirm whether this speed is Mega Bytes per second or Mega Bits per second.


You can search the spec of “SDR104”.

The bus speed page (Bus Speed (Default Speed/High Speed/UHS/SD Express) | SD Association) mentions SDR104 to be 104MB/s without mentioning bits or bytes. However sdcards on the market claim around 90MB/s read speeds on UHS-I, so its got to be 104MBytes/sec.


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