SH7706 Datasheet, PDF (735/749 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7700 Series

Appendix
Table B.8 Pin States (Synchronous DRAM/Big Endian)
32-Bit Bus Width
Byte
Byte
Byte
Byte
Word
Word
Pin
Access Access Access Access Access Access Longword
(Address (Address (Address (Address (Address (Address Access
4n)
4n + 1)
4n + 2)
4n + 3)
4n)
4n + 2)
CS6 to CS2, CS0
Enabled Enabled Enabled Enabled Enabled Enabled Enabled
RD
R High
High
High
High
High
High
High
W High
High
High
High
High
High
High
RD/WR
R High
High
High
High
High
High
High
W Low
Low
Low
Low
Low
Low
Low
BS
RASU/PTD[1]
Enabled Enabled Enabled Enabled Enabled Enabled Enabled
High/Low^*1 High/Low^*1 High/Low^*1 High/Low^*1 High/Low^*1 High/Low^*1 High/Low^*1
RASL/PTD[0]
Low/High^*1 Low/High^*1 Low/High^*1 Low/High^*1 Low/High^*1 Low/High^*1 Low/High^*1
CASL/PTD[2]
High/Low^*1 High/Low^*1 High/Low^*1 High/Low^*1 High/Low^*1 High/Low^*1 High/Low^*1
CASU/PTD[3]
Low/High^*1 Low/High^*1 Low/High^*1 Low/High^*1 Low/High^*1 Low/High^*1 Low/High^*1
DQMLL/WE0
R High
High
High
Low
High
Low
Low
W High
High
High
Low
High
Low
Low
DQMLU/WE1
R High
High
Low
High
High
Low
Low
W High
High
Low
High
High
Low
Low
DQMUL/WE2/ICIORD
R High
Low
High
High
Low
High
Low
W High
Low
High
High
Low
DQMUU/WE3/ICIOWR
R Low
High
High
High
Low
High
High
Low
Low^*1
W Low
High
High
High
Low
High
Low
CE2A/PTD[6]
High
High
High
High
High
High
High
CE2B/PTD[7]
High
High
High
High
High
High
High
CKE
High^*2
High^*2
High^*2
High^*2
High^*2
High^*2
High^*2
WAIT
Disabled Disabled Disabled Disabled Disabled Disabled Disabled
IOIS16
Disabled Disabled Disabled Disabled Disabled Disabled Disabled
A25 to A0
Address Address Address Address Address Address Address
command command command command command command command
D7 to D0
Invalid data Invalid data Invalid data Valid data Invalid data Valid data Valid data
D15 to D8
Invalid data Invalid data Valid data Invalid data Invalid data Valid data Valid data
D23 to D16
Invalid data Valid data Invalid data Invalid data Valid data Invalid data Valid data
D31 to D24
Valid data Invalid data Invalid data Invalid data Valid data
Notes: 1. Lower 32-Mbyte access/Upper 32-Mbyte access
2. Normally high. Low in self-refreshing.
Invalid data Valid data
Rev. 5.00 May 29, 2006 page 687 of 698
REJ09B0146-0500