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