NVT4857UK of CLK_FB pin

[Rex4_Huang]

Hi Sir,

Because we will use the NXP LX2160A in the new project, and the LX2160A checklist recommends using NVT4857UK for SDHC signal voltage transfer,

my question is:

Can I disconnect CLK_FB to the LX2160A?

it means it can't support SDR50 and DDR50 modes, but supports other modes right?

Thanks.

[mrudangshelat-13 · Accepted solution]

Hi @Rex4_Huang,

Please refer to table 31 of AN5407 for the requirement of SDHCn_CLK_SYNC_IN, SDHCn_CLK_SYNC_OUT in SD card/eMMC modes. You can check for which modes this particular signal is mandatory and for the rest you can disconnect the CLK_FB.

Regards,
Mrudang