DMP Electronics eBOX-3350MX-AP Manual de usuario Pagina 21

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386SX Single Chip PC Jan Yin Chan Electronics Co.,LTD.
DM&P M6117D : System on a chip
Page 20
Jan Yin Chan Electronics Co,. LTD. M6117D 386SX Single Chip PC
8F-1,No.22,Wuchyuan 2RD.,Hsin Chuang city Taipei Hsien, Taiwan, R.O.C. Tel: 886-(02) 2298-0770 Fax: (02) 2299-1883
(c) CAS precharge time insert wait
Whatever memory read or write, it will insert 1T wait between the falling edges of both RASJ and CASJ, if D[4] of index
11h is set to high.
BCLK2
MA
RASJ
CASJ
COL addr
ROW addr
COL address
Insert wait 1T
(d) RAS active time insert wait
If RAS is originally in miss state, that is RASJ = 1. We are able to prolong the inactive state of RAS for an extra 1T,
before its falling edge, if D[3] of index 11h is set to high.
BCLK2
MA
RASJ
CASJ
COL addr ROW address COL address
Insert wait 1T
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