Altera cyclone V Technical Reference page 1052

14-106
cmd
Bit
12
send_auto_stop
11
transfer_mode
10
read_write
9
data_expected
Altera Corporation
Name
When set, SD/MMC sends stop command to SD_
MMC_CEATA cards at end of data transfer.
Determine the following: *-when send_auto_stop bit
should be set, since some data transfers do not need
explicit stop commands. *-open-ended transfers that
software should explicitly send to stop command.
Additionally, when resume is sent to resume-
suspended memory access of SD-Combo card, bit
should be set correctly if suspended data transfer
needs send_auto_stop. Don't care if no data expected
from card.
Value
0x0
0x1
Block transfer command. Don't care if no data
expected
Value
0x0
0x1
Read/Write from card. Don't care if no data transfer
expected.
Value
0x0
0x1
Set decision on data transfer expecetd or not.
Value
0x0
0x1
Description
Description
No stop command sent at end of data transfer
Send stop command at end of data transfer
Description
Block data transfer command
Stream data transfer command
Description
Read from card
Write to card
Description
No data transfer expected (read/write)
Data transfer expected (read/write)
cv_5v4
2016.10.28
Access Reset
RW 0x0
RW 0x0
RW 0x0
RW 0x0
SD/MMC Controller
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