Sd Card Interface - Renesas RTK79210**B00000BE User Manual

RZ/A2M SUB Board RTK79210XXB00000BE
2.12

SD Card Interface

RTK79210XXB00000BE is equipped with 4-bit SD card slot, and it connects to the channel 1 of the RZ/A2M on-chip
SD/MMC host interface (SDHI).
Figure 2.12.1 shows the SD card interface block diagram.
RZ/A2M (U1)
SD1_CLK
SD1_CMD
SD1_DAT[3:0]
P5_4 / SD1_CD
P5_5 / SD1_WP
Note: Red text indicates a function used .
：Indicates a function not implemented .
：Indicates a SUB board.
Figure 2.12.1 SD Card Interface Block Diagram
R20UT4398EJ0100 Rev.1.00
2018.10.11
8
3.3V
CLK CLK
3.3V
CMD CMD
D[3:0] D[3:0]
CD CD
WP WP
2. Function specifications
3.3V
SD card slot（CN10）
CLK
CMD
3.3V
DAT[3:0]
3.3V
Card_Detect
CD=0 : Card Inserted
W_Protect
WP=0 : Unlock
3.3V
VDD
2-35