4 PINS
S1C38000 TECHNICAL MANUAL
EPSON
19
CFWAIT# /
GBIRQ#
I
CIGP1
151
N2
This input pin has the following functions:
WAIT signal from the CompactFlash
interface.
It is input isolated under any of the following
conditions: during RESET#; when CARDEN
= 0; when CFCD2# is high; when CFCD1# is
high.
IRQ signal from the Generic Bus interface.
This pin is pulled high by an internal 60k ohm
resistor.
Non-inverting 3.3V Input
with AND Type Gated Input
and Pull-Up.
CFRST /
GBA23
O
OB1
150
R3
This output pin has the following functions:
Reset signal to the CompactFlash interface.
Asserted high for card reset. Low for normal
card operation.
It drives low under any of the following
conditions: during RESET#; when CARDEN
= 0; when CFCD2# is high; when CFCD1# is
high.
Generic Bus interface address bus bit 23.
Output Buffer (IOL=3mA)
CFWP
I
CIGP1
148
R4
This input pin has the following functions:
WP (Write Protect) input from the
CompactFlash interface in Memory Only
mode.
It is input isolated under any of the following
conditions: during RESET#; when CARDEN
= 0; when CFCD2# is high; when CFCD1# is
high.
IOIS16 input from the CompactFlash
interface in I/O and Memory mode.
This pin is pulled high by an internal 60k ohm
resistor.
Non-inverting 3.3V Input
with AND Type Gated Input
and Pull-Up.
CFREADY
I
CIGP1
147
K3
READY input from the CompactFlash
interface.
This pin is input isolated under any of the
following conditions: during RESET#; when
CARDEN = 0; when CFCD2# is high; when
CFCD1# is high.
This pin is pulled high by an internal 60k ohm
resistor.
Non-inverting 3.3V Input
with AND Type Gated Input
and Pull-Up.
CFBVD[2:1]
I
CIGP1
146, 145
R6, T3
Battery Voltage Detect (BVD2, BVD1) inputs
from the CompactFlash interface.
These pins are input isolated under any of the
following conditions: during RESET#; when
CARDEN = 0; when CFCD2# is high; when
CFCD1# is high.
These pins are pulled high by an internal 60k
ohm resistor.
Non-inverting 3.3V Input
with AND Type Gated Input
and Pull-Up.
CFCD[2:1]# /
GBCD[2:1]#
I
CIG
142, 141
T4, T5
These input pins have the following functions:
Card Detect inputs (CD2#, CD1#) inputs
from the CompactFlash interface.
These pins are input isolated under any of
the following conditions: during RESET#;
when CARDCDEN = 0. Changes on the
inputs must be stable for 4 IOCLK periods
before they are recognized.
Card Detect inputs (CD2#, CD1#) from the
Generic Bus interface. Changes on the
inputs must be stable for 4 IOCLK periods
before they are recognized.
These pins can be programmed to cause
interrupts.
Non-inverting 3.3V Input
with OR Type Gated Input.
CFVS[2:1]#
I
CIG
140, 139
M5, R8
Voltage Sense inputs (VS2#, VS1#) from the
CompactFlash interface.
These pins are input isolated under any of the
following conditions: during RESET#; when
CARDCDEN = 0.
Non-inverting 3.3V Input
with OR Type Gated Input.
Table 4-3 CompactFlash / Generic Bus (Continued)
Pin Names
Type
Cell
QFP
Pin #
CFLGA
Pin #
Description
Selection