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SMC032AF 데이터시트(PDF) 18 Page - Numonyx B.V

부품명 SMC032AF
상세설명  32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte and 512 Mbyte 3.3 V / 5 V supply CompactFlash??card
PDF  82 Pages
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제조업체  NUMONYX [Numonyx B.V]
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SMC032AF 데이터시트(HTML) 18 Page - Numonyx B.V

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Electrical interface
SMCxxxAF
18/82
READY
(PC card memory mode)
O37
Indicates whether the card is busy (Low), or ready to
accept a new data transfer operation (High). The Host
socket must provide a pull-up resistor. At power-up and
reset, the READY signal is held Low until the commands
are completed. No access should be made during this
time. The READY signal is held High whenever the card
has been powered up with RESET continuously
disconnected or asserted.
–IREQ
(PC card I/O mode)
Interrupt request. It is strobed Low to generate a pulse
mode interrupt or held Low for a level mode interrupt.
INTRQ
(True IDE mode)
Active High Interrupt request to the host.
–REG
(PC card memory mode)
I44
Used to distinguish between common memory and
register (attribute) memory accesses. High for common
memory, Low for attribute memory.
–REG
(PC card I/O mode)
Must be Low during I/O cycles when the I/O address is on
the bus.
Reserved
(True IDE mode)
Not used, should be connected to VCC by the host.
RESET
(PC card memory mode)
I41
Resets the card (active High). The card is reset at power-
up only if this pin is left High or unconnected.
RESET
(PC card I/O mode)
Same as PC card memory mode.
–RESET
(True IDE mode)
Hardware Reset from the host (active Low).
VCC
(PC card memory mode)
13,38
+5 V, +3.3 V power.
VCC
(PC card I/O mode)
Same for all modes.
VCC
(True IDE mode)
Same for all modes.
–VS1, –VS2
(PC card memory mode)
O33,40
Voltage sense signals.–VS1 is grounded so that the CIS
can be read at 3.3 volts and –VS2 is reserved by PCMCIA
for a secondary voltage.
–VS1, –VS2
(PC card I/O mode)
Same for all modes.
–VS1, –VS2
(True IDE mode)
Same for all modes.
–WAIT
(PC card memory mode)
O
42
ST CF does not assert the WAIT (IORDY) signal.
–WAIT
(PC card I/O mode)
IORDY
(True IDE mode)
Table 9.
Signal description (continued)
Signal name
Direction
Pin
Description



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