Sir,
My application is using WL1835MOD. The SDIO interface of this module has VI/O 1.8V, & my processor's SD interface has VI/O for SD at 3.3V, therefore I needed level translator. For this I consulted Application report with literature no. SWRA448. In this document, level translator for sdio interface with part no. TXS0108E is recommended & it is mentioned in the same document that this translator satisfies timing needs for SD interface.
As I was performing DC analysis, I found Following mismatches:
1.Voh(VCCB) 2.211V of TXS0108E should be > Vih 2.31V of i.MX 6 processor, but it is actually comming smaller.
2.Voh 1.35v of Wl1835MOD should be > Vih(VCCA) 1.6V of TXS0108E, but it is lesser
3.Vol 0.45V of Wl1835MOD should be < Vil(VCCA) 0.15v of TXS0108E, but it is greater
Also I have attached pics of my analysis in this document itself.
Please, help me in sorting out this problem & tell me whether am I still able to use this translator or I have to go for another.
If i have to go for another, then what is the alternative translator that is compatible to SD interface timings ?
DC Mismatch Faced, Implemented Formulas
