THNCF008MAA Datasheet, PDF (12/52 Pages) Toshiba Semiconductor – CompactFlash Card

Preliminary version
THNCFxxxMAA Series
Signal Name
-VS1
-VS2
(PC Card Memory Mode)
-VS1
-VS2
(PC Card I/O Mode)
-VS1
-VS2
(True IDE Mode)
-WAIT
(PC Card Memory Mode)
-WAIT
(PC Card I/O Mode)
IORDY
(True IDE Mode)
-WE
(PC Card Memory Mode)
-WE
(PC Card I/O Mode)
-WE
(True IDE Mode)
Dir. Pin Description
O 33 Voltage Sense Signals. –VS1 is grounded so that the CompactFlash
40 Storage Card or CF+Card CIS can be read at 3.3 volts and –VS2 is reserved
by PCMCIA for a secondary voltage.
This signal is the same for all modes.
This signal is the same for all modes.
O 42 The –WAIT signal is driven low by the CompactFlash Storage Card or
CF+Card to signal the host to delay completion of a memory or I/O cycle that
is in progress.
This signal is the same as the PC Card Memory Mode signal.
In True IDE Mode this output signal may be used as IORDY.
I
36 This is a signal driven by the host and used for strobing memory write data
to the registers of the CompactFlash Storage Card Storage Card or CF+Card
when the card is configured in the memory interfacce mode. It is also used
for writing the configuration registers.
In PC Card I/O Mode, this signal is used for writing the configuration
registers.
In True IDE Mode this input signal is not used and should be connected to
VCC by the host.
WP
(PC Card Memory Mode)
Write Protect
-IOIS16
(PC Card I/O Mode)
-IOIS 16
(True IDE Mode)
O 24 Memory Mode – The CompactFlash Storage Card or CF+Card does not
have a write protect switch. This signal is held low after the completion of
the reset initialization sequence.
I/O Operation – When the CompactFlash Storage Card or CF+Card is
configured for I/O Operation Pin 24 is used for the –I/O Selected is 16Bit
Port (-IOIS16) function. A Low signal indicates that a 16bit 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.
2001-09-05 12/52