CCID descriptor statistics: dwDataRate

Article from the serie "CCID descriptor statistics"

The dwDataRate field is a number value from the CCID USB descriptor:
Default ICC I/O data rate in bps. This is an integer value

Example: 9600 bps is encoded as the integer value 9600. (00002580h)

dwDataRate#%
10752 bps9938.98 %
9600 bps6224.41 %
12903 bps249.45 %
10753 bps197.48 %
9946 bps103.94 %
9909 bps83.15 %
12407 bps51.97 %
4032 bps41.57 %
10080 bps31.18 %
106000 bps31.18 %
12902 bps31.18 %
2688 bps20.79 %
5376 bps20.79 %
8065 bps20.79 %
9924 bps20.79 %
10573 bps10.39 %
12672 bps10.39 %
13440 bps10.39 %
20112 bps10.39 %
9677 bps10.39 %
9910 bps10.39 %


The default data rate is the data rate used before a new data rate is selected by the reader and/or the driver.


Most of the values are around 9600 bps which is the historical data rate value.

The 3 readers with dwDataRate = 106000 bauds are contactless readers.
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