Card bus width configuration register
CARD_WIDTH4 | One bit per card indicates if card is 1-bit or 4-bit mode. 0: 1-bit mode; 1: 4-bit mode. Bit[1:0] correspond to card[1:0] respectively. |
CARD_WIDTH8 | One bit per card indicates if card is in 8-bit mode. 0: Non 8-bit mode; 1: 8-bit mode. Bit[17:16] correspond to card[1:0] respectively. |