Hitachi IC25N010ATCS04, Specifications

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10.0 Registers
Invalid address Invalid address x x x A A
Command Status 1 1 1 N A
* LBA bits 24-27 * LBA bits 24-27 0 1 1 N A
Device/Head Device/Head. 0 1 1 N A
* LBA bits 16-23 * LBA bits 16-23 1 0 1 N A
Cylinder High Cylinder High 1 0 1 N A
* LBA bits 8-15 * LBA bits 8-15 0 0 1 N A
Cylinder Low Cylinder Low 0 0 1 N A
* LBA bits 0-7 * LBA bits 0-7 1 1 0 N A
Sector Number Sector Number 1 1 0 N A
Sector Count Sector Count 0 1 0 N A
Features Error Register 1 0 0 N A
Data Data 0 0 0 N A
Command block registers
Not used Device Address 1 1 1 A N
Device Control Alternate Status 0 1 1 A N
Not used
Data bus high
impedance
x 0 1 A N
Not used
Data bus high
impedance
x x 0 A N
Control block registers
Not used
Data bus high
impedance
x x x N N
WRITE (DIOW-) READ (DIOR-) DA0 DA1 DA2 CS1- CS0-
Functions Addresses
x = either A or N
N = signal not asserted
A = signal asserted Logic conventions:
* = Mapping of registers in LBA mode
Figure 50. Register Set
Communication to or from the device is through an I/O Register that routes the input or output data to or
from the registers addressed by the signals from the host (CS0-, CS1-, DA2, DA1, DA0, DIOR- and
DIOW-).
The Command Block Registers are used for sending commands to the device or posting status from the
device.
The Control Block Registers are used for device control and to post alternate status.
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
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