Table 234. Erase Size Field; Table 235. Erase Timeout Field; Table 236. Erase Offset Field - ST STM32L4x6 Reference Manual

SD/SDIO/MMC card host interface (SDMMC)
ERASE_SIZE
0000h
0001h
0002h
0003h
---------
FFFFh
ERASE_TIMEOUT
This 6-bit field indicates T
multiple AUs are being erased as specified by ERASE_SIZE. The range of
ERASE_TIMEOUT can be defined as up to 63 seconds and the card manufacturer can
choose any combination of ERASE_SIZE and ERASE_TIMEOUT depending on the
implementation. Determining ERASE_TIMEOUT determines the ERASE_SIZE.
ERASE_TIMEOUT
00
01
02
03
---------
63
ERASE_OFFSET
This 2-bit field indicates T
meaningless if the ERASE_SIZE and ERASE_TIMEOUT fields are set to 0.
0h
1h
2h
3h
1424/1693

Table 234. Erase size field

Erase timeout calculation is not supported.
1 AU
2 AU
3 AU
---------
65535 AU
and the value indicates the erase timeout from offset when
ERASE

Table 235. Erase timeout field

Erase timeout calculation is not supported.
1 [sec]
2 [sec]
3 [sec]
---------
63 [sec]
and one of four values can be selected. This field is
OFFSET

Table 236. Erase offset field

ERASE_OFFSET
DocID024597 Rev 3
Value definition
Value definition
Value definition
0 [sec]
1 [sec]
2 [sec]
3 [sec]
RM0351