TS32M~1GCF80
80X CompactFlash Card
-VS1
O
33
40
Voltage Sense Signals. -VS1 is grounded on the Card and sensed by the Host
so that the CompactFlash Storage Card CIS can be read at 3.3 volts and -VS2 is
reserved by PCMCIA for a secondary voltage and is not connected on the Card.
-VS2
(PC Card Memory Mode)
-VS1
This signal is the same for all modes.
-VS2
(PC Card I/O Mode)
-VS1
This signal is the same for all modes.
-VS2
(True IDE Mode)
-WAIT
(PC Card Memory Mode)
O
42
The -WAIT signal is driven low by the CompactFlash Storage Card to signal the
host to delay completion of a memory or I/O cycle that is in progress.
-WAIT
(PC Card I/O Mode)
This signal is the same as the PC Card Memory Mode signal.
IORDY
(True IDE Mode)
In True IDE Mode, except in Ultra DMA modes, this output signal may be used
as IORDY.
Signal Name
Dir.
I
Pin
Description
-WE
36
This is a signal driven by the host and used for strobing memory write data to the
registers of the CompactFlash Storage Card when the card is configured in the
memory interface mode. It is also used for writing the configuration registers.
(PC Card Memory Mode)
-WE
In PC Card I/O Mode, this signal is used for writing the configuration registers.
(PC Card I/O Mode)
-WE
In True IDE Mode, this input signal is not used and should be connected to VCC
(True IDE Mode)
WP
(PC Card Memory Mode)
Write Protect
by the host.
Memory Mode – The CompactFlash Storage Card does not have a write protect
switch. This signal is held low after the completion of the reset initialization
sequence.
O
24
-IOIS16
(PC Card I/O Mode)
I/O Operation – When the CompactFlash Storage Card is configured for I/O
Operation Pin 24 is used for the -I/O Selected is 16 Bit Port (-IOIS16) function. A
Low signal indicates that a 16 bit or odd byte only operation can be performed at
the addressed port.
In True IDE Mode this output signal is asserted low when this device is expecting
a word data transfer cycle.
-IOCS16
(True IDE Mode)
Transcend Information Inc.
12
TRANSCEND [ TRANSCEND INFORMATION. INC. ]
