Information
Enhanced Secure Digital Host Controller
MPC8308 PowerQUICC II Pro Processor Reference Manual, Rev. 1
Freescale Semiconductor 11-63
CMD38 ac [31–0] stuff bits R1b ERASE Erase all previously selected sectors.
CMD39 ac [31–16] RCA
[15] register write flag
[14–8] register
address
[7–0] register data
R4 FAST_IO Used to write and read 8-bit (register)
data fields. The command address a
card and a register and provides the
data for writing if the write flag is set.
The R4 response contains data read
from the address register. This
command accesses application
dependent registers which are not
defined in the MMC standard.
CMD40 bcr [31–0] stuff bits R5 GO_IRQ_STATE Sets the system into interrupt mode.
CMD41 Reserved
CDM42 adtc [31–0] stuff bits R1b LOCK_UNLOCK Used to set/reset the password or
lock/unlock the card. The size of the
data block is set by the
SET_BLOCK_LEN command.
CMD43–51 Reserved
CMD52 ac [31–0] stuff bits R5 IO_RW_DIRECT Access a single register within the
total 128 Kbytes of register space in
any I/O function.
CMD53 ac [31–0] stuff bits R5 IO_RW_EXTENDED Access a multiple I/O register with a
single command, it allows the reading
or writing of a large number of I/O
registers.
CMD54 Reserved
CMD55 ac [31–16] RCA
[15–0] stuff bits
R1 APP_CMD Indicates to the card that the next
command is an application specific
command rather that a standard
command.
CMD56 adtc [31–1] stuff bits
[0]– RD/WR
R1b GEN_CMD Used either to transfer a data block to
the card or to get a data block from the
card for general-purpose or
application-specific commands. The
size of the data block is set by the
SET_BLOCK_LEN command.
ACMDs should be preceded with the APP_CMD command
(Commands listed below are for SD cards only. Other SD commands not listed below are not supported by this module)
ACMD6 ac [31–2] stuff bits
[1–0] bus width
R1 SET_BUS_WIDTH Defines the data bus width (00 = 1 bit
or 10 = 4 bit bus) to be used for data
transfer. The allowed data bus widths
are given in DCR register.
ACMD13 adtc [31–0] stuff bits R1 SD_STATUS Send the SD memory card status.
Table 11-26. Commands for MMC/SD/SDIO (continued)
CMD
INDEX
Type Argument Resp Abbreviation Description
1