SH7014 Datasheet, PDF (168/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

8. Bus State Controller (BSC)
DRAM access
Tp
Tr Tc1 Tc2
CS space
access
T1 T2
DRAM access
Tp Tr Tc1 Tc2
CK
Address
Row Column
CS space
Row Column
RAS
CASx
Data
Figure 8.13 DRAM Access Normal Operation (RAS Up Mode)
DRAM access
Tp
Tr Tc1 Tc2
CS space
access
T1 T2
DRAM
access
Tc1 Tc2
CK
Address
RAS
Row Column
CS space
Column
CASx
Data
Figure 8.14 RAS Down Mode
Rev.5.00 Sep. 27, 2007 Page 134 of 716
REJ09B0398-0500