smc256bf Numonyx, smc256bf Datasheet - Page 16

• Manufacturer Part Number: smc256bf
• Description: 32-mbyte, 64-mbyte, 128-mbyte, 256-mbyte, 512-mbyte, 1-gbyte, 2-gbyte And 4-gbyte 3.3/5 V Supply Compactflash? Card
• Manufacturer: Numonyx

Electrical interface
Table 8.
1. For True IDE mode, pin 9 is grounded.
2. The signal should be grounded by the host.
3. These signals are required only for 16-bit accesses and not required when installed in 8-bit systems. Devices should allow
4. The signal should be tied to V
5. The -CSEL signal is ignored by the card in PC card modes. However, because it is not pulled up on the card in these
6. When the device does not operate in DMA mode, the signal should be held High or tied to V
Table 9.
16/90
A10 to A0
(PC card memory mode)
A10 to A0
(PC card I/O mode)
A2 to A0
(True IDE mode)
BVD1
(PC card memory mode)
–STSCHG
(PC card I/O mode)
–PDIAG
(True IDE mode)
BVD2
(PC card memory mode)
–SPKR
(PC card I/O mode)
–DASP
(True IDE mode)
Num
Pin
49
50
for 3-state signals not to consume current.
modes it should not be left floating by the host in PC card modes. In these modes, the pin is normally connected by the host
to PC card A25 or grounded by the host.
proper operation with older hosts when DMA mode is disabled, the card should ignore the –DMACK signal.
Signal name
Signal
D10
name
GND
PC card memory mode
Pin assignment and pin type (continued)
Signal descriptions
(3)
type
Pin
I/O
CC
Dir.
I/O
I/O
by the host.
I1Z,OZ3
I
Ground
In, Out
type
14,15,16,17,
8,10,11,12,
18,19,20
Pin
46
45
Signal
D10
name
GND
PC card I/O mode
(3)
Used (with –REG) to select: the I/O port address registers,
the memory mapped port address registers, a byte in the
card information structure and its configuration control and
status registers.
Same as PC card memory mode
Only A2 to A0 are used to select the one of eight registers in
the task file, the remaining lines should be grounded.
The battery voltage status of the card, as no battery is
required it is asserted High.
Alerts the host to changes in the ready and write protect
states. Its use is controlled by the card configuration and
status register.
The Pass Diagnostic signal in the master/slave handshake
protocol.
The battery voltage status of the card, as no battery is
required it is asserted High.
The Binary Audio output from the card. It is asserted High
as audio functions are not supported.
This input/output is the Disk Active/Slave Present signal in
the master/slave handshake protocol.
type
Pin
I/O
I1Z,OZ3
Ground
In, Out
type
Signal
D10
Description
name
GND
(3)
CC
True IDE mode
by the host. To ensure
type
Pin
I/O
SMCxxxBF
I1Z,OZ3
Ground
In, Out
type