Section 8 Bus State Controller (BSC)
Rev. 5.00 May 29, 2006 page 228 of 698
REJ09B0146-0500
CKIO
CS2
or
CS3
RASx
CASx
RD/
WR
DQMxx
D31 to D0
BS
Tp
Tr
Tc1
Tc2
Tc3
Td4
Address
upper bits
A12 or A11
*
1
Address
lower bits
*
2
Notes: 1.
2.
Command bit
Column address
Figure 8.23 Burst Write Timing (Different Row Addresses)
Refreshing
The bus state controller is provided with a function for controlling synchronous DRAM
refreshing. Auto-refreshing can be performed by clearing the RMODE bit to 0 and setting the
RFSH bit to 1 in MCR. If synchronous DRAM is not accessed for a long period, self-refresh
mode, in which the power consumption for data retention is low, can be activated by setting both
the RMODE bit and the RFSH bit to 1.
Summary of Contents for SH7706 Series
Page 8: ...Rev 5 00 May 29 2006 page viii of xlviii ...
Page 160: ...Section 5 Cache Rev 5 00 May 29 2006 page 112 of 698 REJ09B0146 0500 ...
Page 370: ...Section 11 Watchdog Timer WDT Rev 5 00 May 29 2006 page 322 of 698 REJ09B0146 0500 ...
Page 554: ...Section 17 Pin Function Controller PFC Rev 5 00 May 29 2006 page 506 of 698 REJ09B0146 0500 ...
Page 576: ...Section 18 I O Ports Rev 5 00 May 29 2006 page 528 of 698 REJ09B0146 0500 ...
Page 746: ...Index Rev 5 00 May 29 2006 page 698 of 698 REJ09B0146 0500 ...
Page 749: ...SH7706 Group Hardware Manual ...