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ROM/RAM characteristics and performance benchmarks of the SD/MMC driver can be found in section Driver Characterization. The SD/MMC driver also provides interface functions to get low-level card information and read the Card ID and Card-Specific Data registers (see section FAT System Driver Functions).
If the SD/MMC initialization succeeds, the file system will produce the trace output as shown in (if a sufficiently high trace level is configured). See section See Trace Configuration about configuring the trace level.