TS256MBCF45I-D Transcend Information. Inc., TS256MBCF45I-D Datasheet - Page 40
![no-image](/images/no-image-200.jpg)
TS256MBCF45I-D
Manufacturer Part Number
TS256MBCF45I-D
Description
Transcend Industrial Cf Card
Manufacturer
Transcend Information. Inc.
Datasheet
1.TS256MBCF45I-D.pdf
(84 pages)
- Current page: 40 of 84
- Download datasheet (3Mb)
T
(
I/O Transfer Function
Transcend Information Inc.
(
T
(
T
r
1
r
1
r
1
a
a
a
2
2
2
The I/O transfer to or from the CompactFlash Storage or CF+ Card can be either 8 or 16 bits. When a 16 bit
accessible port is addressed, the signal -IOIS16 is asserted by the CompactFlash Storage or CF+ Card.
Otherwise, the -IOIS16 signal is de-asserted. When a 16 bit transfer is attempted, and the -IOIS16 signal is
not asserted by the CompactFlash Storage or CF+ Card, the system shall generate a pair of 8 bit references
to access the word‘s even byte and odd byte. The CompactFlash Storage Card permits both 8 and 16 bit
accesses to all of its I/O addresses, so -IOIS16 is asserted for all addresses to which the CompactFlash
Storage responds. CF+ cards may or may not allow 16 bit register accesses and thus shall assert -IOIS16 as
required. The CompactFlash Storage and CF+ Card may request the host to extend the length of an input
cycle until data is ready by asserting the -WAIT signal at the start of the cycle.
n
n
n
8
8
8
s
s
M
s
M
M
c
c
c
B
B
B
e
e
e
n
n
n
~
~
~
d
d
d
8
8
8
G
G
G
I
I
B
I
B
B
n
n
n
d
d
d
)
)
)
u
u
u
s
s
s
t
t
t
r
r
r
i
i
i
a
a
a
l
l
l
Table : PCMCIA Mode I/O Function
C
C
C
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F
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C
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40
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