Partial truth table for read/write, Truth table for read/write – Cypress CY7C1361C User Manual
Page 11
CY7C1361C
CY7C1363C
Document #: 38-05541 Rev. *F
Page 11 of 31
Partial Truth Table for Read/Write
[3, 8]
Function (CY7C1361C)
GW
BWE
BW
D
BW
C
BW
B
BW
A
Read
H
H
X
X
X
X
Read
H
L
H
H
H
H
Write Byte (A, DQP
A
)
H
L
H
H
H
L
Write Byte (B, DQP
B
)
H
L
H
H
L
H
Write Bytes (B, A, DQP
A
, DQP
B
)
H
L
H
H
L
L
Write Byte (C, DQP
C
)
H
L
H
L
H
H
Write Bytes (C, A, DQP
C
, DQP
A
)
H
L
H
L
H
L
Write Bytes (C, B, DQP
C
, DQP
B
)
H
L
H
L
L
H
Write Bytes (C, B, A, DQP
C
, DQP
B
, DQP
A
)
H
L
H
L
L
L
Write Byte (D, DQP
D
)
H
L
L
H
H
H
Write Bytes (D, A, DQP
D
, DQP
A
)
H
L
L
H
H
L
Write Bytes (D, B, DQP
D
, DQP
A
)
H
L
L
H
L
H
Write Bytes (D, B, A, DQP
D
, DQP
B
, DQP
A
)
H
L
L
H
L
L
Write Bytes (D, B, DQP
D
, DQP
B
)
H
L
L
L
H
H
Write Bytes (D, B, A, DQP
D
, DQP
C
, DQP
A
)
H
L
L
L
H
L
Write Bytes (D, C, A, DQP
D
, DQP
B
, DQP
A
)
H
L
L
L
L
H
Write All Bytes
H
L
L
L
L
L
Write All Bytes
L
X
X
X
X
X
Truth Table for Read/Write
[3, 8]
Function (CY7C1363C)
GW
BWE
BW
B
BW
A
Read
H
H
X
X
Read
H
L
H
H
Write Byte A – (DQ
A
and DQP
A
)
H
L
H
L
Write Byte B – (DQ
B
and DQP
B
)
H
L
L
H
Write All Bytes
H
L
L
L
Write All Bytes
L
X
X
X
Note:
8. Table only lists a partial listing of the byte write combinations. Any Combination of BW
X
is valid Appropriate write will be done based on which byte write is active.