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SDP3B FlashDisk Product Manual
4.6
Common Memory Transfer Function
4.6.1
Common Memory Function
The Common Memory transfer to or from the
SDP3B FlashDisk can be either 8 or 16 bits.
The SDP3B FlashDisk permits both 8 and 16 bit
accesses to all of its Common Memory addresses.
Table 4-16 Common Memory Function
Function Code
Standby Mode
Byte ReadAccess
(8 bits)
Byte Write Access
(8 bits)
Word Read Access
(16 bits)
Word Write Access
(16 bits)
Odd Byte Read Only
(8 bits)
Odd Byte Write Only
(8 bits)
44
-REG
-CE2
-CE1
X
H
H
H
H
L
H
H
L
H
H
L
H
H
L
H
L
L
H
L
L
H
L
H
H
L
H
SanDisk SDP3B FlashDisk Product Manual © 1998 SANDISK CORPORATION
The SDP3B FlashDisk may request the host to
extend the length of a memory write cycle or
extend the length of a memory read cycle until
data is ready by asserting the -WAIT signal at
the start of the cycle.
A0
- O E
-WE
X
X
X
L
L
H
H
L
H
L
H
L
H
H
L
X
L
H
X
H
L
X
L
H
X
H
L
D15-D8
D7-D0
High Z
High Z
High Z
Even-Byte
High Z
Odd-Byte
Don't Care
Even-Byte
Don't Care
Odd-Byte
Odd-Byte
Even-Byte
Odd-Byte
Even-Byte
Odd-Byte
High Z
Odd-Byte
Don't Care
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