
SDP3B FlashDisk Product Manual
SanDisk SDP3B FlashDisk Product Manual © 1998 SANDISK CORPORATION
26
Table 4-2 Signal Description (continued)
Signal Name
Dir.
Pin
Description
RESET
(PC Card Memory Mode)
I
58
When the pin is high, this signal resets the SDP3B FlashDisk.
The card is Reset only at power up if this pin is left high or open
from power-up. The card is also reset when the Soft Reset bit in
the Card Configuration Option Register is set.
RESET
(PC Card I/O Mode)
This signal is the same as the PC Card Memory Mode signal.
-RESET
(True IDE Mode)
In the True IDE Mode this input pin is the active low hardware
reset from the host.
VCC
(PC Card Memory Mode)
--
17, 51
+5 V, +3.3 V power.
VCC
(PC Card I/O Mode)
This signal is the same for all modes.
VCC
(True IDE Mode)
This signal is the same for all modes.
VPP
(PC Card Memory Mode)
18, 52
Programming Voltage power supply is not connected on the
SDP3B FlashDisk products.
VPP
(PC Card I/O Mode)
This signal is the same for all modes.
VPP
(True IDE Mode)
This signal is the same for all modes.
-VS1
-VS2
(PC Card Memory Mode)
O
43
57
Voltage Sense Signals. -VS1 is grounded so that the SDP3B
FlashDisk CIS can be read at 3.3 volts and -VS2 is open and
reserved by PCMCIA for a secondary voltage.
-VS1
-VS2
(PC Card I/O Mode)
This signal is the same for all modes.
-VS1
-VS2
(True IDE Mode)
This signal is the same for all modes.
-WAIT
(PC Card Memory Mode)
O
59
The -WAIT signal is driven low by the SDP3B FlashDisk 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 this output signal may be used as IORDY.
-WE
(PC Card Memory Mode)
I
15
This is a signal driven by the host and used for strobing memory
write data to the registers of the SDP3B FlashDisk when the
card is configured in the memory interface mode. It is also used
for writing the configuration registers.
-WE
(PC Card I/O Mode)
In PC Card I/O Mode, this signal is used for writing the
configuration registers.
-WE
(True IDE Mode)
In True IDE Mode this input signal is not used and should be
connected to VCC by the host.