Hitachi SH7709S Hardware Manual page 761

Table A.8 Pin States (Synchronous DRAM/Big Endian)
Pin
CS6 to CS2, CS0
RD
R
W
RD/WR R
W
BS
RAS3U/PTE[2]
RAS3L/PTJ[0]
CASL/PTJ[2]
CASU/PTJ[3]
WE0/DQMLL
R
W
WE1/DQMLU/WE
R
W
WE2/DQMUL/ICIORD/
R
PTK[6]
W
WE3/DQMUU/ICIOWR/ R
PTK[7]
W
CE2A/PTE[4]
CE2B/PTE[5]
CKE/PTK[5]
WAIT
IOIS16/PTG[7]
A25 to A0
D7 to D0
D15 to D8
D23 to D16
D31 to D24
Notes: *1 Lower 32-MB access/ Upper 32-MB access/64-MB access
*2 Normally high. Low in self-refreshing.
742
Byte Byte Byte
Access Access Access
(Address (Address (Address
4n) 4n + 1) 4n + 2)
Enabled Enabled Enabled
High High High
High High High
High High High
Low Low Low
Enabled Enabled Enabled
*1 *1
High/Low High/Low High/Low
*1 *1
Low/High Low/High Low/High
Low Low Low
High High High
High High High
High High High
High High Low
High High Low
High Low High
High Low High
Low High High
Low High High
High High High
High High High
*2 *2
High High High
Disabled Disabled Disabled
Disabled Disabled Disabled
Address Address Address
command command command
Valid Invalid Invalid
data data data
Invalid Valid Invalid
data data data
Invalid Invalid Valid
data data data
Invalid Invalid Invalid
data data data
32-Bit Bus Width
Byte Word
Access Access
(Address (Address
4n + 3) 4n)
Enabled Enabled
High High
High High
High High
Low Low
Enabled Enabled
*1 *1
High/Low High/Low
*1 *1
Low/High Low/High
Low Low
High High
Low High
Low High
High High
High High
High Low
High Low
High Low
High Low
High High
High High
*2 *2 *2
High High
Disabled Disabled
Disabled Disabled
Address Address
command command
Invalid Valid
data data
Invalid Valid
data data
Invalid Invalid
data data
Valid Invalid
data data
Word
Access
(Address Longword
4n + 2) Access
Enabled Enabled
High High
High High
High High
Low Low
Enabled Enabled
*1 *1 *1
High/Low High/Low
*1 *1 *1
Low/High Low/High
Low Low
High High
Low Low
Low Low
Low Low
Low Low
High Low
High Low
High Low
High Low
High High
High High
*2 *2
High High
Disabled Disabled
Disabled Disabled
Address Address
command command
Invalid Valid
data data
Invalid Valid
data data
Valid Valid
data data
Valid Valid
data data