Datasheet

13.5 CF-ATA Command Description
This section defines the format of the commands the host sends to the drive. 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 below) of command acceptance, all dependent on the host not
issuing commands unless the card is not busy (BSY=0).
y Upon receipt of a Class 1 command, the card sets BSY within 400 ns.
y Upon receipt of a Class 2 command, the card sets BSY within 400 ns, sets up the sector buffer for a
write operation, sets DRQ within 700 us, and clears BSY within 400 ns of setting DRQ.
y Upon receipt of a Class 3 command, the card sets BSY within 400 ns, sets up the sector buffer for a
write operation, sets DRQ within 20 ms (assuming no reassignments), and clears BSY within 400 ns
of setting DRQ.
-D----E6h or 99hSet Sleep Mode1
-D--Y-C6hSet Multiple Mode1
-D---YEFhSet Features1
-D---YF0hSense Condition1
YYYY--7XhSeek1
-D----03hRequest Sense1
-D----1XhRecalibrate1
YYYYY-40h or 41hRead Verify Sector(s)1
YYYYY-20h or 21hRead Sector(s)1
YYYYY-C4hRead Multiple1
YYYY--22h or 23h Read Long Sector1
YYYYY-C8h or C9hRead DMA1
-D----E4hRead Buffer1
-Y--Y-91h
Initialize Device
Parameters
1
-D----E1h or 95hIdle Immediate1
-D--Y-E3h or 97hIdle1
-D----EChIdentify Device1
YYYYY-50hFormat Track2
YYYYY-C0hErase Sector(s)1
-D----90h
Execute Device
Diagnostic
1
-D----E5h or 98hCheck Power Mode1
-D--YYB8h
Access Metadata
Storage
1
LBADHCYSNSCFRCodeCOMMANDClass
Figure 68. CF-ATA Command Description (part 1 of 2)
Hard disk drive specification for DSCM-11000/-10512/-10340
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