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SH7261 Datasheet(PDF) 309 Page - Renesas Technology Corp

Part # SH7261
Description  32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series
PDF  1348 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7261 Datasheet(HTML) 309 Page - Renesas Technology Corp

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Section 9 Bus State Controller (BSC)
Rev. 2.00 Sep. 07, 2007 Page 277 of 1312
REJ09B0320-0200
CKIO
ACT: Row and bank activation command
RD:
Read command
DSL: Deselect command
PRA: Precharge-all command
SDRAM command
Data bus
Single read
Note: If the interval set in DRAS ends before RD, PRA is issued in the table
size after RD.
ACT
DSL
RD
PRA
DSL
DRCD
(ACT-RD)
DRAS
(ACT-PRA)
DCL
(RD-d)
DPCG
(PRA-next)
d
Figure 9.37 Single Read Timing Example 2
CKIO
ACT: Row and bank activation command
RD:
Read command
PRA: Precharge-all command
SDRAM command
Data bus
Single read
ACT
DSL
RD
PRA
DSL
DRCD
(ACT-RD)
DRAS
(ACT-PRA)
DCL
(RD-d)
DPCG
(PRA-next)
d
Figure 9.38 Single Read Timing Example 3



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