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Pls reading the spec. of controller carefully! , \) p/ Y5 b3 f7 l0 m
Maybe you can get some useful info. from the spec. as following ：& m- ~- {$ @9 k" l+ m
1、FCE= Flash Chip Enable , they're output pins....
" h7 p: C3 d y7 i0 _6 F3 y2、FCE[0-4] means your controller can drive 5 pcs of flash max.
$ y n9 @3 z8 D) q, m3、FRB = Flash Read Busy, they're input pins...（output from Flash）# k: O M- @1 F' V9 E8 l+ t
So ,we can know:. J* Z3 y/ I. w( V9 I
1- if use only one Flash, the other FCEs can be NC. (Not Connected)
" ?0 H: l8 |* l! T& y2- maybe you can't left the FRB1 float, if you're not sure,you can phone the FAE of the controller or put some NC.RES to pull-up/down6 }$ g8 R* K% \5 B" s Q( l
' {0 L; o2 E) \7 _# S% j annd，好痛苦英语，太郁闷了。。。。 |
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发表于 2008-7-5 01:37
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