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4.14 MMC Argument Register (MMCARGHL)
Registers
Note:
Do not modify the MMC argument register (MMCARGHL) while it is being used for an
operation.
operation.
The MMC argument register (MMCARGHL) specifies the arguments to be sent with the command
specified in the MMC command register (MMCCMD). Writing to MMCCMD causes the MMC controller to
send a command; therefore, MMCARGHL must be configured before writing to MMCCMD. The content of
MMCARGHL is kept after the transfer to the shift register; however, modification to MMCARGHL is not
allowed during a sending operation. For the format of a command, see
specified in the MMC command register (MMCCMD). Writing to MMCCMD causes the MMC controller to
send a command; therefore, MMCARGHL must be configured before writing to MMCCMD. The content of
MMCARGHL is kept after the transfer to the shift register; however, modification to MMCARGHL is not
allowed during a sending operation. For the format of a command, see
and
.
The MMC argument register (MMCARGHL) is shown in
and described in
.
Figure 32. MMC Argument Register (MMCARGHL)
31
16
ARGH
R/W-0
15
0
ARGL
R/W-0
LEGEND: R/W = Read/Write; -n = value after reset
Table 20. MMC Argument Register (MMCARGHL) Field Descriptions
Bit
Field
Value
Description
31-16
ARGH
0-FFFFh
Argument, high part.
15-0
ARGL
0-FFFFh
Argument, low part.
Multimedia Card (MMC)/Secure Digital (SD) Card Controller
54
SPRUE30B – September 2006