Hitachi IC25N010ATCS04, Технические характеристики

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13.15 Read Multiple (C4h)
see below Status 1 1 0 0 0 1 0 0 Command
- - - - H H H H Device/Head 1 L 1 D H H H H Device/Head
V V V V V V V V Cylinder High V V V V V V V V Cylinder High
V V V V V V V V Cylinder Low V V V V V V V V Cylinder Low
V V V V V V V V Sector Number V V V V V V V V Sector Number
V V V V V V V V Sector Count V V V V V V V V Sector Count
see below Error - - - - - - - - Feature
- - - - - - - - Data - - - - - - - - Data
7 6 5 4 3 2 1 0 Register 7 6 5 4 3 2 1 0 Register
Command Block Input Registers Command Block Output Registers
V - 0 - V 0 V 0 V 0 V 0 V 0 V 0
ERR IDX COR DRQ DSC DF RDY BSY AMN T0N ABT 0 IDN 0 UNC CRC
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
Status Register Error Register
Figure 100. Read Multiple command (C4h)
The Read Multiple command reads one or more sectors of data from disk media and then transfers the
data from the device to the host.
The sectors are transferred through the Data Register 16 bits at a time. The command execution is
identical to the Read Sectors command with one exception: an interrupt is generated for each block—as
defined by the Set Multiple command—instead of for each sector.
Output parameters to the device
Sector Count This indicates the number of continuous sectors to be transferred. If zero is
specified, 256 sectors will be transferred.
Sector Number This indicates the sector number of the first sector to be transferred. (L = 0) In
LBA mode, this register contains LBA bits 0–7. (L = 1)
Cylinder High/Low This indicates the cylinder number of the first sector to be transferred. (L = 0) In
LBA mode this register contains LBA bits 8–15 (Low) and bits 16–23 (High).
(L = 1)
H This indicates the head number of the first sector to be transferred. (L = 0) In LBA
mode this register contains LBA bits 24–27. (L = 1)
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
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