SDCFJ-1024-388 SanDisk, SDCFJ-1024-388 Datasheet - Page 42

• Manufacturer Part Number: SDCFJ-1024-388
• Description: COMPACT FLASH 1GB
• Manufacturer: SanDisk
• Type: CompactFlashr

Specifications of SDCFJ-1024-388

• Memory Size: 1GB
• Memory Type: CompactFLASH
• Density: 1GByte
• Operating Supply Voltage (typ): 3.3/5V
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Package Type: Not Required
• Mounting: Socket
• Pin Count: 50
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3.135/4.5V
• Operating Supply Voltage (max): 3.465/5.5V
• Programmable: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.4.3. Card Configuration and Status Register (Address 202h in Attribute Memory)
The Card Configuration and Status Register contain information about the Card’s condition.
Changed
SigChg
IOis8
PwrDwn
Int
3.4.4. Pin Replacement Register (Address 204h in Attribute Memory)
CRdy/-Bsy
CWProt
CompactFlash
Operation
Operation
Read
Write
Read
Write
Conf5
0
0
0
0
®
Memory Card Product Manual, Rev. 11.0 ©2006 SanDisk Corporation
Conf4
Changed
Indicates that one or both of the Pin Replacement register CRdy, or CWProt bits are set to one (1). When the
Changed bit is set, -STSCHG Pin 46 is held low if the SigChg bit is a One (1) and the CompactFlash Memory
Card is configured for the I/O interface.
This bit is set and reset by the host to enable and disable a state-change “signal” from the Status Register, the
Changed bit control pin 46 the Changed Status signal. If no state change signal is desired, this bit should be
set to zero (0) and pin 46 (-STSCHG) signal will be held high while the CompactFlash Memory Card is
configured for I/O.
The host sets this bit to a one (1) if the CompactFlash Memory Card is to be configured in an 8 bit I/O mode.
The CompactFlash Card is always configured for both 8- and 16-bit I/O, so this bit is ignored.
This bit indicates whether the host requests the CompactFlash Memory Card to be in the power saving or
active mode. When the bit is one (1), the CompactFlash Card enters a power down mode. When zero (0), the
host is requesting the CompactFlash Card to enter the active mode. The PCMCIA Rdy/-Bsy value becomes
BUSY when this bit is changed. Rdy/-Bsy will not become Ready until the power state requested has been
entered. The CompactFlash Card automatically powers down when it is idle and powers back up when it
receives a command.
This bit represents the internal state of the interrupt request. This value is available whether or not I/O
interface has been configured. This signal remains true until the condition that caused the interrupt request
has been serviced. If interrupts are disabled by the -IEN bit in the Device Control Register, this bit is a zero
(0).
This bit is set to one (1) when the bit RRdy/-Bsy changes state. This bit can also be written by the host.
This bit is set to one (1) when the RWprot changes state. This bit may also be written by the host.
0
0
0
0
D7
D7
0
0
0
Table 3-19. Card Configuration and Status Register Organization
Conf3
0
0
0
0
SigChg
SigChg
D6
0
0
D6
Conf2
Table 3-20. Pin Replacement Register
0
0
0
0
Table 3-18. Card Configurations
CRdy/-Bsy
CRdy/-Bsy
D5
IOis8
IOis8
D5
Conf1
0
0
1
1
CWProt
CWProt
D4
D4
0
0
Conf0
0
1
0
1
Memory Mapped
I/O Mapped, Any 16 byte system decoded boundary
I/O Mapped, 1F0-1F7/3F6-3F7
I/O Mapped, 170-177/376-377
D3
D3
1
0
0
0
CompactFlash Memory Card Interface Description
PwrDwn
PwrDwn
D2
Disk Card Mode
1
0
D2
MRdy/-Bsy
RRdy/-Bsy
D1
D1
Int
0
RWProt
MWProt
D0
D0
0
0
3-23