Renesas SH7709S Stereo System User Manual


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Rev. 5.00, 09/03, page 734 of 760
Table A.8 Pin States (Synchronous DRAM/Big Endian)
32-Bit Bus Width
Pin
Byte
Access
(Address
4n)
Byte
Access
(Address
4n + 1)
Byte
Access
(Address
4n + 2)
Byte
Access
(Address
4n + 3)
Word
Access
(Address
4n)
Word
Access
(Address
4n + 2)
Longword
Access
CS6 to CS2, CS0 Enabled Enabled Enabled Enabled Enabled Enabled Enabled
R High High High High High High HighRD
W High High High High High High High
R High High High High High High HighRD/WR
W Low Low Low Low Low Low Low
BS Enabled Enabled Enabled Enabled Enabled Enabled Enabled
RAS3U/PTE[2] High/Low
*
1
High/Low
*
1
High/Low
*
1
High/Low
*
1
High/Low
*
1
High/Low
*
1
High/Low
*
1
RAS3L/PTJ[0] Low/High
*
1
Low/High
*
1
Low/High
*
1
Low/High
*
1
Low/High
*
1
Low/High
*
1
Low/High
*
1
CASL/PTJ[2] Low Low Low Low Low Low Low
CASU/PTJ[3] High High High High High High High
R High High High Low High Low LowWE0/DQMLL
W High High High Low High Low Low
R High High Low High High Low LowWE1/DQMLU/WE
W High High Low High High Low Low
R High Low High High Low High LowWE2/DQMUL/
ICIORD/PTK[6]
W High Low High High Low High Low
R Low High High High Low High LowWE3/DQMUU/
ICIOWR/PTK[7]
W Low High High High Low High Low
CE2A/PTE[4] High High High High High High High
CE2B/PTE[5] High High High High High High High
CKE/PTK[5] High
*
2
High
*
2
High
*
2
High
*
2
High
*
2
High
*
2
High
*
2
WAIT Disabled Disabled Disabled Disabled Disabled Disabled Disabled
IOIS16/PTG[7] Disabled Disabled Disabled Disabled Disabled Disabled Disabled
A25 to A0 Address
command
Address
command
Address
command
Address
command
Address
command
Address
command
Address
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
Invalid
data
Valid
data
Notes: 1. Lower 32-MB access/ Upper 32-MB access/64-MB access
2. Normally high. Low in self-refreshing.
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