Table 175. Erase Size Field; Table 176. Erase Timeout Field; Table 177. Erase Offset Field - ST STM32F412 Reference Manual

Secure digital input/output interface (SDIO)
ERASE_SIZE
This 16-bit field indicates N
value is specified by ERASE_TIMEOUT (Refer to ERASE_TIMEOUT). The host should
determine the proper number of AUs to be erased in one operation so that the host can
show the progress of the erase operation. If this field is set to 0, the erase timeout
calculation is not supported.
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
894/1163
. When N
ERASE

Table 175. 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 176. 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 177. Erase offset field

ERASE_OFFSET
RM0402 Rev 6
numbers of AUs are erased, the timeout
ERASE
Value definition
Value definition
Value definition
0 [sec]
1 [sec]
RM0402