SMCXXXAF Datasheet, PDF (37/82 Pages) Numonyx B.V – 32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte and 512 Mbyte 3.3 V / 5 V supply CompactFlash™ card

SMCxxxAF
Card configuration
6.7
Common memory transfer function
The common memory transfer to or from the card permits both 8 or 16 bit access to all of the
common memory addresses. (see Table 33).
Table 33. Common memory function
Function code
–REG –CE2 –CE1 A0 –OE
Standby mode
X
H
H
XX
Byte Read access
H
H
L
LL
(8 bits)
H
H
L
HL
Byte Write access
H
H
L
LH
(8 bits)
H
H
L
HH
Word Read access
H
L
L
XL
(16 bits)
Word Write access
H
L
L
XH
(16 bits)
Odd byte read only
H
L
(8 bits)
Odd byte write only
H
L
(8 bits)
H
XL
H
XH
–WE
X
H
H
L
L
H
L
H
L
D15 to D8
High Z
High Z
High Z
Don’t care
Don’t care
D7 to D0
High Z
Even byte
Odd byte
Even byte
Odd byte
Odd byte
Even byte
Odd byte
Even byte
Odd byte
High Z
Odd byte
Don’t care
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