SDCFH-1024-388 SanDisk, SDCFH-1024-388 Datasheet - Page 55

• 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

© 2007 SanDisk Corporation
CHAPTER 5
5.1
This section defines the software requirements and the format of commands the host sends to
CompactFlash Memory cards. Commands are issued to the card by loading the required
registers in the command block with the supplied parameters, and then writing the command
code to the Command Register. The manner in which a command is accepted varies. There are
three classes (see Table 5-1) of command acceptance, all dependent on the host not issuing
commands unless the card is not busy. (The BUSY bit in the status and alternate status registers
is 0.)
•
•
•
ATA Command Set
Table 5-1 summarizes the ATA command set with the paragraphs that follow describing the
individual commands and the task file for each.
Table 5-1
Class
Upon receipt of a Class 1 command, the card sets the BUSY bit within 400 nsec.
Upon receipt of a Class 2 command, the card sets the BUSY bit within 400 nsec, sets up the
sector buffer for a write operation, sets DRQ within 700 µsec, and clears the BUSY bit
within 400 nsec of setting DRQ.
Upon receipt of a Class 3 command, the card sets the BUSY bit within 400 nsec, sets up the
sector buffer for a write operation, sets DRQ within 20 msec (assuming no re-assignments),
and clears the BUSY bit within 400 nsec of setting DRQ.
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Check Power Mode
Execute Drive Diagnostic
Erase Sector(s)
Format Track
Identify Device
Idle
Idle Immediate
Initialize Drive Parameters
Read Buffer
Read DMA
Read Multiple
Read Long Sector
Read Sector(s)
Read Verify Sector(s)
Recalibrate
Request Sense
Seek
Set Features
ATA Command Description
Primary and Secondary I/O Decoding
Command
b
a
5-1
22h or 23h
E5h or 98h
90h
C0h
50h
ECh
E3h or 97h
E1h or 95h
91h
E4h
C8 or C9
C4h
20h or 21h
40h or 41h
1Xh
03h
7Xh
EFh
Code
FR
Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SC
Y
Y
Y
Y
Y
Y
Y
Y
-
-
-
-
-
-
-
-
-
-
SN
Y
Y
Y
Y
Y
Y
Y
-
-
-
-
-
-
-
-
-
-
-
CY
Y
Y
Y
Y
Y
Y
Y
Y
-
-
-
-
-
-
-
-
-
-
Rev. 12.0, 02/07
DH
D
D
Y
Y
D
D
D
Y
D
Y
Y
Y
Y
Y
D
D
Y
D
LBA
Y
Y
Y
Y
Y
Y
Y
Y
-
-
-
-
-
-
-
-
-
-