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Pls reading the spec. of controller carefully! , I. y" J9 j* i8 B2 j* d0 K4 B
Maybe you can get some useful info. from the spec. as following ：3 [9 @$ {$ r, Z
1、FCE= Flash Chip Enable , they're output pins....
+ ?+ r- _% {; R5 Y# a2、FCE[0-4] means your controller can drive 5 pcs of flash max.
1 L4 L% C$ P! I' x+ G& L" I- r3、FRB = Flash Read Busy, they're input pins...（output from Flash）
# S9 R# u3 m1 R. f9 GSo ,we can know:
5 C" _, i0 n( F. t1 [( U- }* V1- if use only one Flash, the other FCEs can be NC. (Not Connected)8 }9 _; h0 s7 n3 S
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! D: c, J3 J J) L. M* t3 [
) {$ t5 J$ ]1 V( H& xnnd，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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