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Pls reading the spec. of controller carefully!
" o5 p/ G9 e& N8 ?; mMaybe you can get some useful info. from the spec. as following ：
$ K0 e- ~0 ?* X' u$ T! Q1、FCE= Flash Chip Enable , they're output pins....
' n0 G7 g# T2 b2、FCE[0-4] means your controller can drive 5 pcs of flash max.. u6 t; B6 Z, y* H. j
3、FRB = Flash Read Busy, they're input pins...（output from Flash）
]# L/ ]6 s. @& X, ySo ,we can know:
* l' g$ s0 L* p1- if use only one Flash, the other FCEs can be NC. (Not Connected)9 q- q$ ?5 k8 g% O
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
; Q; y0 z4 d; C8 S. D! b9 u5 Q* v* H% O3 z$ G: S, [$ z2 W6 o
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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