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Pls reading the spec. of controller carefully! : `! M1 W* S$ J& d
Maybe you can get some useful info. from the spec. as following ：
: ]! v6 g3 O% y8 I3 x! s1、FCE= Flash Chip Enable , they're output pins....
0 x0 K* Q8 Z# z9 [& b" V2、FCE[0-4] means your controller can drive 5 pcs of flash max.
' A& A1 @$ j0 W9 ~! W* s6 N( `) ?6 c3、FRB = Flash Read Busy, they're input pins...（output from Flash）" N( |" L' b/ V/ P4 O
So ,we can know:
7 ~3 s5 W( U* J1- if use only one Flash, the other FCEs can be NC. (Not Connected)
. }, g: h% i: p2- 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/down% H2 Q) ]4 H0 u& o2 o" ?$ D5 B
6 n( o2 h3 O5 J; |0 B* p9 {nnd，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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