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Pls reading the spec. of controller carefully! ( N* J- k4 J. U7 I% k7 i
Maybe you can get some useful info. from the spec. as following ：3 U- j$ D. k! y/ e* R" J; `
1、FCE= Flash Chip Enable , they're output pins....
% M; V5 Q# Y- h: P* V3 C2、FCE[0-4] means your controller can drive 5 pcs of flash max.5 i; ? H/ A, K; L% D3 m& T" \
3、FRB = Flash Read Busy, they're input pins...（output from Flash）
' j+ c6 J* B: @- Q( }So ,we can know:
( D5 @" z2 M3 ~" ~' O" n D1- if use only one Flash, the other FCEs can be NC. (Not Connected)6 z; ]" u$ n* O1 M# H: N' P
2- 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
& M3 m/ W2 b) K6 z% W5 [3 {2 B& @/ D, C$ M( ]% B& [! L
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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淘帖
支持！
反对！
楼主