Manual

220 Series Commercial Grade CF Product Manual v2.0Cactus Technologies
®
11
Signal Name Dir. Description
-CE1, -CE2
(CF Card Memory Mode)
Card Enable
I
These input signals are used both to select the card and to indicate
to the card whether a byte or a word operation is being performed.
-CE2 always accesses the odd byte of the word. -CE1 accesses the
even byte or the Odd byte of the word depending on A0 and -CE2. A
multiplexing scheme based on A0, -CE1, and -CE2 allows 8 bit hosts
to access all data on D0-D7. See Tables 3-11, 3-12, 3-15, and 3-16.
-CE1, -CE2
(CF Card I/O Mode)
Card Enable
This signal is the same as the CF Card Memory Mode signal.
-CS0, -CS1
(True IDE Mode)
In the True IDE Mode -CS0 is the chip select for the task le registers
while -CS1 is used to select the Alternate Status Register and the
Device Control Register.
-CSEL
(CF Card Memory Mode)
I
This signal is not used for this mode.
-CSEL
(CF Card I/O Mode)
This signal is not used for this mode.
-CSEL
(True IDE Mode)
This internally pulled up signal is used to congure this device as a
Master or a Slave when congured in the True IDE Mode. When this
pin is grounded, this device is congured as a Master. When the pin is
open, this device is congured as a Slave.
D15—D00
(CF Card Memory Mode)
I/O
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
(CF Card I/O Mode)
These signals are the same as the CF 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 bits using
D00-D15.
GND
(CF Card Memory Mode)
--
Ground.
GND
(CF Card I/O Mode)
This signal is the same for all modes.
GND
(True IDE Mode)
This signal is the same for all modes.