Product manual

CompactFlash Memory Card Product Manual Preliminary
SanDisk CompactFlash Memory Card Product Manual Rev. 8 © 2001 SANDISK CORPORATION
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Table 4-2 Signal Description (continued)
Signal Name Dir. Pin Description
-CSEL
(PC Card Memory Mode)
I 39 This signal is not used for this mode.
-CSEL
(PC Card I/O Mode)
This signal is not used for this mode.
-CSEL
(True IDE Mode)
This internally pulled up signal is used to configure this device as a
Master or a Slave when configured in the True IDE Mode. When this
pin is grounded, this device is configured as a Master. When the pin is
open, this device is configured as a Slave.
D15 - D00
(PC Card Memory Mode)
I/O 31, 30, 29, 28,
27, 49, 48, 47, 6,
5, 4, 3, 2, 23,
22, 21
These lines carry the Data, Commands and Status information between
the host and the controller. D00 is the LSB of the Even Byte of the
Word. D08 is the LSB of the Odd Byte of the Word.
D15 - D00
(PC Card I/O Mode)
This signal is the same as the PC Card Memory Mode signal.
D15 - D00
(True IDE Mode)
In True IDE Mode, all Task File operations occur in byte mode on the
low order bus D00-D07 while all data transfers are 16 bit using D00-
D15.
GND
(PC Card Memory Mode)
-- 1, 50 Ground.
GND
(PC Card I/O Mode)
This signal is the same for all modes.
GND
(True IDE Mode)
This signal is the same for all modes.
-INPACK
( PC Card Memory Mode)
O 43 This signal is not used in this mode.
-INPACK
( PC Card I/O Mode)
Input Acknowledge
The Input Acknowledge signal is asserted by the CompactFlash Card
when the card is selected and responding to an I/O read cycle at the
address that is on the address bus. This signal is used by the host to
control the enable of any input data buffers between the card and the
CPU.
-INPACK
(True IDE Mode)
In True IDE Mode this output signal is not used and should not be
connected at the host.
-IORD
(PC Card Memory Mode)
I 34 This signal is not used in this mode.
-IORD
(PC Card I/O Mode)
This is an I/O Read strobe generated by the host. This signal gates I/O
data onto the bus from the CompactFlash Card when the card is
configured to use the I/O interface.
-IORD
(True IDE Mode)
In True IDE Mode, this signal has the same function as in PC Card I/O
Mode.