Other Parts Discussed in Thread: TXS0206A
Hi,
We are facing sd card interface issue with TXS0108EPWR level translator, Issue is unable to initialize the SD card from FPGA. Then I probed the SD card interface signals and found that the response for from SD card is wrong and then there is no further transactions on the interface.Finally identified the issue at TXS0108EPWR level translator as some glitches at 3.3V level (SD card side), but interface connectivity is staight forward as below.
captured waveforms of level translator (both 3.3V and 1.8V level signals); Channel2 - 1.8V and Channel1- 3.3V level signals
It seems glitch comes after sd_cmd command so sdcard controller (FPGA) consider as response and no transaction if CRC not matched
We are not expecting glitch at one side of level translator, please suggest us to slove this issue.
Regards
Shiva