Datasheet

Default Number of Cylinders
This field contains the number of translated cylinders in the default translation mode. This value will be
the same as the number of cylinders.
Default Number of Heads
This field contains the number of translated heads in the default translation mode.
Default Number of Sectors per Track
This field contains the number of sectors per track in the default translation mode.
Number of Sectors per Card
This field contains the number of sectors per card. This double word value is also the first invalid address
in LBA translation mode.
Memory Card Serial Number
The contents of this field are right justified and padded with spaces (20h).
ECC Count
This field defines the number of ECC bytes used on each sector in the Read and Write Long commands.
Firmware Revision
This field contains the revision of the firmware for the Hitachi Microdrive.
Model Number
This field contains the model number for this product and is left justified and padded with spaces (20h).
Read/Write Multiple Sector Count
The even byte value of this field contains the maximum number of sectors that can be read or written per
interrupt using the Read Multiple or Write Multiple commands.
Capabilities
Bit 13 = 0 : Standby timer operation is IBM specific
Bit 11 = 1 : IORDY supported
Bit 10 = 1 : IORDY can be disabled
Bit 9 = 1 : LBA mode supported
Bit 8 = 1 : DMA transfer supported (True IDE mode ONLY)
PIO Data Transfer Cycle Timing Mode
This field defines the mode for PIO data transfer.
DMA Data Transfer Cycle Timing Mode
This field defines the mode for DMA data transfer.
Translation Parameters are Valid
This field contains the value 0003h indicating that words 54 to 58 are valid and reflect the current number
of cylinders, heads and sectors.
Current Number of Cylinders, Heads, Sectors/Track
These fields contains the current number of user addressable Cylinders, Heads, and Sectors/Track in the
current translation mode.
Current Capacity
This field contains the product of the current cylinders times heads times sectors.
Multiple Sector Setting
This field contains a validity flag in the odd byte and the current number of sectors that can be transferred
per interrupt for R/W Multiple in the even byte. The odd byte is always 01h, which indicates that the even
byte is always valid.
The even byte value depends on the value set by the Set Multiple command. The even byte of this word
by default contains a 00h, which indicates that R/W Multiple commands are not valid.
Hard disk drive specification for DSCM-11000/-10512/-10340
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