I am designing Board with Vybrid VF6 and I have doubt about SDHC layout recommentaions appears in paragraph 188.8.131.52 SD Card interface requirements of ref. doc. VYBRIDHDUG_HW_UserGuide.
In this paragrap appears:
1. The clock trace should be longer than the longest trace in the Data /Command group (+5mils).
Is 5mils minimun distance or maximum ?
2. SD card interface layout requirements are very similar to those for the DDR one (see Section 3.5,
“DDR routing rules”).
But in this section appears DDR3 recommnedations?
I need to kown routing recomentadion to SDHC.
Can somebody help me?
Thank you in advance.