CTYPE
Card Type Register
| Module Instance | Base Address | Register Address |
|---|---|---|
| i_sdmmc_sdmmc_block_1 | 0xFF8D1000 | 0xFF8D1018 |
Size: 32
Offset: 0x18
Access: RW
Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.
| Bit Fields | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
|
Reserved |
CARD0_WIDTH1 RW 0x0 |
||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|
Reserved |
CARD0_WIDTH2 RW 0x0 |
||||||||||||||
CTYPE Fields
| Bit | Name | Description | Access | Reset | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 16 | CARD0_WIDTH1 |
One bit per card indicates if card is 8-bit:
0-Non 8-bit mode
1-8-bit mode
Bit[31] corresponds to card[15]; bit[16] corresponds to card[0].
|
RW | 0x0 | ||||||
| 0 | CARD0_WIDTH2 |
One bit per card indicates if card is 1-bit or 4-bit:
0-1-bit mode
1-4-bit mode
Bit[15] corresponds to card[15], bit[0] corresponds to card[0].
Only NUM_CARDS*2 number of bits are implemented.
|
RW | 0x0 |