Altera cyclone V Technical Reference page 999

cv_5v4
2016.10.28
send_initialization
stop_abort_cmd
send_auto_stop
read_write
response_length
response_expect
Table 14-23: cmd Register Settings for Single-Block and Multiple-Block Reads (User Selectable)
wait_prvdata_complete
check_response_crc
cmd_index
Related Information
Auto-Stop
Refer to this table for information about setting the
Single-Block or Multiple-Block Write
The following steps comprise a single-block or multiple-block write:
SD/MMC Controller
Send Feedback
Parameter
Parameter
on page 14-29
Single-Block or Multiple-Block Write
Value
0
1 for a card reset command such as the SD/SDIO
GO_IDLE_STATE command
0 otherwise
0
1 for a command to stop data transfer such as the
SD/SDIO STOP_TRANSMISSION command
0 otherwise
0 or 1 Refer to Auto Stop for information about how to
set this parameter.
0 Read from card
0
1 for R2 (long) response
0 for short response
1 or 0
0 for commands with no response, such as SD/
SDIO GO_IDLE_STATE, SET_DSR, and GO_
INACTIVE_STATE.
1 otherwise
Value
1 or 0
0 - sends command to CIU immediately
1 - sends command after previous data transfer
ends
1 or 0
0 - Controller must not check response CRC
1 - Controller must check responce CRC
Comman Set this parameter to the command number. For
d Index example, set to 17 or 18 for SD/SDIO READ_
SINGLE_BLOCK (CMS17) or READ_
MULTIPLE_BLOCK (CMD18)
send_auto_stop
Comment
Comment
parameter.
Altera Corporation
14-53