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Prelminary
2004.11.12
(Continued)
Pin name
Pin no.
CFCD1X
58
CFVS1X
230
CFRDY
60
(CFIREQ)
CFWAITX
125
CFVCC3EX
234
CFRESET
184
CFOEX
127
CFWEX
62
CFIORDX
64
CFIOWRX
129
I/O
Polarity
Circuit
Card connection detect input pin : CFCD1X
Nega-
Checking connection pin of the socket and CompactFlash
IN
E
tive
card. It is shown that the CompactFlash card was connected
when this signal and CFCD2X are both input by "0".
CF side GND input pin
GND level detection pin from CompactFlash side.
Nega-
IN
E
The "0" input to the pin assumes that the CompactFlash
tive
card can operate at 3.3 V, setting the CFVCC3EX pin to the
"L" level.
CF ready input pin : memory card
Ready input pin from CompactFlash memory card side
Posi-
"1" : Ready
tive
"0" : Busy
IN
E
(Nega-
(CF interrupt : I/O card)
tive)
Interrupt request pin of CompactFlash I/O card. It is shown
the interrupt request was done from the I/O card when input
to this signal by "0".
Cycle wait input pin during CF execution
Cycle wait input pin from CompactFlash card side
Nega-
"0" : It is shown that there is a wait demand at the cycle
IN
E
tive
"1" : It is shown that there is no wait demand at the cycle
CF3.3 V power enable output pin
Outputs "L" level when the CompactFlash card is operable
Nega-
at 3.3 V.
OUT
B
tive
The output signal enables 3.3-volt power supply to the
CompactFlash card. The pin outputs "L" level only when the
CFVS1X pin detects "0"; otherwise, the pin outputs "H".
CF reset output pin
Posi-
OUT
A
Reset output pin to CompactFlash card side.
tive
CompactFlash is reset at "H" output.
CF read strobe output pin
Nega-
OUT
B
Read strove output pin to CompactFlash card (memory
tive
mode and Attribute memory area)
CF register write output pin
Write clock output pin to CompactFlash card (register write
Nega-
OUT
B
and Card Configuration Register area).
tive
The register write is executed at the rising edge from "L" to
"H".
Nega-
CFIO read strobing output pin
OUT
B
tive
Read strove output pin to CompactFlash card (I/O mode)
Nega-
CFIO write strobing output pin
OUT
B
tive
Write strove output pin to CompactFlash card (I/O mode)
Function/application
under execution.
under execution.
MB91401
15
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