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

• Manufacturer Part Number: SDCFH-1024-388
• Description: COMPACT FLASH 1GB ULTRA II
• Manufacturer: SanDisk

Specifications of SDCFH-1024-388

• Memory Size: 1GB
• Memory Type: CompactFLASH
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

02/07, Rev. 12.0
Interface Description
3.4.4
Card Configuration and Status Register (con’t)
Pin Replacement Register (Address 204h in Attribute Memory)
The Pin Replacement Register information is described below.
Operation
Bit
Bit
D7
D6
D5
D2
D1
D5
D4
D1
D0
Read
Write
MRdy/-Bsy
CRdy/-Bsy
RRdy/-Bsy
Changed
PwrDwn
MWProt
CWProt
RWProt
SigChg
D7
Name
Name
IOis8
0
0
Int
D6
0
0
Indicates that one or both of the Pin Replacement Register CRdy, or
CWProt bits are set to "1". When the Changed bit is set, -STSCHG Pin 46
is held low if the SigChg bit is a "1" and the 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
card is configured for I/O
The host sets this bit to a one "1" if the card is to be configured in an 8-bit
I/O mode. The 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 card to be in the power
saving or active mode. When the bit is "1", the card enters a power down
mode. When "0", the host is requesting the 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 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 "0".
This bit is set to "1" when the bit RRdy/-Bsy changes state. This bit can also
be written by the host.
This bit is set to "1" when the RWprot changes state. This bit may also be
written by the host.
This bit is used to determine the internal state of the Rdy/-Bsy signal. This
bit may be used to determine the state of the Ready/-Busy as this pin has
been reallocated for use as Interrupt Request on an I/O card. When written,
this bit acts as a mask for writing the corresponding bit CRdy/-Bsy.
This bit acts as a mask for writing the corresponding bit CRdy/-Bsy.
This bit is always "0" because the card does not have a write-protect
switch. When written, this bit acts as a mask for writing the corresponding
bit CWProt.
This bit when written acts as a mask for writing the corresponding bit
CWProt.
CRdy/-Bsy
CRdy/-Bsy
3-24
D5
CWProt
CWProt
D4
SanDisk CompactFlash Card OEM Product Manual
Description
Description
D3
1
0
D2
1
0
© 2007 SanDisk Corporation
RRdy/-Bsy
MRdy/-Bsy
D1
RWProt
MWProt
D0