Hi all,
I'd like to confirm about i.MX7D boot from uSDHC.
Q1.
If I don't need to detect whether SD card is attached or not, I only connect following signals to socket and i.MX7.
SD1_CLK
SD1_CMD
SD1_DATA0-3
Am I correct ?
Q2.
If Q1 is yes, you recommended to tie low the SDx_CD_B.
Am I correct ?
Ko-hey
Solved! Go to Solution.
Look at the following:
"Should SD1_CD_B be pulled low for Wi-Fi over SDIO (i.mx6ULL)?"
https://community.nxp.com/message/940212
~Yuri.
Hello,
according to Table 6-45 (SD/MMC IOMUX pin configuration) in "System Boot" chapter of i.MX 7Dual Reference Manual,
Rev. 1, 01/2018, CD_B signal is used only for the uSDHC1.
Regards,
Yuri.
Hi Yuri Muhin ,
Okay, I understand SD1_CD_B need for booting.
So is the following correct ?
Need card detection: SD1_CD_B connect SD card socket
No need card detection: SD1_CD_B tied low.
Ko-hey
Look at the following:
"Should SD1_CD_B be pulled low for Wi-Fi over SDIO (i.mx6ULL)?"
https://community.nxp.com/message/940212
~Yuri.