Table 147. Speed Class Code Field; Table 148. Performance Move Field - ST STM32F101 series Reference Manual

Secure digital input/output interface (SDIO)
00h
01h
02h
03h
04h – FFh
PERFORMANCE_MOVE
This 8-bit field indicates Pm (performance move) and the value can be set by 1 [MB/sec]
steps. If the card does not move used RUs (recording units), Pm should be considered as
infinity. Setting the field to FFh means infinity.
PERFORMANCE_MOVE
00h
01h
02h
---------
FEh
FFh
AU_SIZE
This 4-bit field indicates the AU size and the value can be selected in the power of 2 base
from 16 KB.
00h
01h
02h
03h
04h
05h
06h
07h
08h
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Table 147. Speed class code field

SPEED_CLASS

Table 148. Performance move field

AU_SIZE
DocID13902 Rev 15
Class 0
Class 2
Class 4
Class 6
Reserved
Not defined
1 [MB/sec]
02h 2 [MB/sec]
---------
254 [MB/sec]
Infinity
Table 149. AU_SIZE field
Not defined
16 KB
32 KB
64 KB
128 KB
256 KB
512 KB
1 MB
2 MB
Value definition
Value definition
Value definition
RM0008