Altera cyclone V Technical Reference page 1065

cv_5v4
2016.10.28
Bit
8
data_3_status
7:4
command_fsm_states
3
fifo_full
SD/MMC Controller
Send Feedback
Name
Raw selected card_data[3]; checks whether card is
present. The default can be cardpresent or not present
depend on cdata_in.
Value
0x1
0x0
The command FSM state.
Value
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xa
0xb
0xc
0xd
0xe
0xf
FIFO is full status.
Value
0x0
0x1
Description
Description
Card Present
Card Not Present
Description
Idle, Wait for CCS, Send CCSD, or Boot
Mode
Send init sequence
Tx cmd start bit
Tx cmd tx bit
Tx cmd index + arg
Tx cmd crc7
Tx cmd end bit
Rx resp start bit
Rx resp IRQ response
Rx resp tx bit
Rx resp cmd idx
Rx resp data
Rx resp crc7
Rx resp end bit
Cmd path wait NCC
Wait: CMD-to-reponse turnaround
Description
FIFO is full
FIFO is not full
14-119
status
Access Reset
RO 0x1
RO 0x0
RO 0x0
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