Datasheet

Table Of Contents
Value Description
1
High Speed mode.
Note: 1. This bit is effective only if MC1R.DDR is set to 0.
2. The clock divider (DIV) in CCR must be set to a value different from 0 when HSEN is 1.
Bit 1 – DW Data Width
This bit selects the data width of the peripheral. It must be set to match the data width of the card.
Note:  If the Extended Data Transfer Width is 1, this bit has no effect and the data width is 8-bit mode.
Value Name Description
0
1_BIT 1-bit mode
1
4_BIT 4-bit mode
Bit 0 – LEDCTRL LED Control
Note: 
This register entry is specific to the SD/SDIO operation mode.
This bit is used to caution the user not to remove the card while it is being accessed. If the software is
going to issue multiple commands, this bit is set to 1 during all transactions.
Value Name Description
0
OFF LED off
1
ON LED on
SAM D5x/E5x Family Data Sheet
SD/MMC Host Controller ...
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1336