46
3. Details of hardware
MB86R11
Evaluation Board
MB86R11EVB Hardware Manual
3.3.6.
SDIO
The Option board has 2 channels of Ch1 (CN31) and Ch2 (CN32) as the SDIO interface. This interface is
connected to the SD card slot.
The power supply to the SD card is controlled with the pin of MB86R11 (see Figure 3-).
Table 3-51 SDIO
No.
Item
Model number
Manufacturer
Quantity
Remarks
1
SD card slot
DM1AA-SF-PEJ
HRS
2
No.
SD power supply control pin
SD card
Remarks
1
INT_A5 (GPIO19)
SD CH0
0: PWR ON
(It is mounted on the Base board.)
2
INT_A6 (GPIO20)
SD CH1
0: PWR ON
3
INT_A7 (GPIO21)
SD CH2
0: PWR ON
Figure 3-7 SDIO circuit of Option board