Am Fr 25. Juli 2008 schrieb BlueStar88: > What about fixing the rate on the sd-card side to far lower level, not > only while ideling, even if accessing? Lets say 5MHz. Would it make any > sense and would it decrase the clock noise significally enough, to be > able to just ignore the hardware patch?
To add to Andy's prev comment, the noise isn't exactly relating to clock-*speed* but rather to signal rise- and fall-time of the low-high-low transitions. Those aren't affected by mere closck-speed, but actually are by adding caps or changing drive-power. Think of it like hitting a bell once a second or every 3 seconds doesn't change the frequency or amplitude of the bell's tone itself. Anyway fiddling with sd-clock-freq won't hurt, just report your results. Maybe we find something unexpected ;-) cheers jOERG
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