Deskstar 7K80 Hard Disk Drive Specification
111
•
Write Multiple Ext
•
Write Sector(s)
•
Write Sector(s) Ext
Execution includes the transfer of one or more 512 byte (> 512 bytes on Write Long) sectors of data from the host
to the device.
1. The host writes any required parameters to the Features, Sector Count, Sector Number, Cylinder, and
Device/Head Registers.
2. The host writes the command code to the Command Register.
3. The device sets BSY = 1.
4. For each sector (or block) of data to be transferred:
a. The devics BSY = 0 and DRQ = 1 when it is ready to receive a sector (or block).
b. The host writes one sector (or block) of data via the Data Register.
c. The device sets BSY = 1 after it has received the sector (or block).
d. When the device has finished processing the sector (or block), it sets BSY = 0 and interrupts the host.
e. In response to the interrupt, the host reads the Status Register.
f. The device clears the interrupt in response to the Status Register being read.
5. For the Write Long command:
a. The device sets BSY = 0 and DRQ = 1 when it is ready to receive a sector.
b. The host writes one sector of data including ECC bytes via the Data Register.
c. The device sets BSY = 1 after it has received the sector.
d. After processing the sector of data, the device sets BSY = 0 and interrupts the host.
e. In response to the interrupt the host reads the Status Register.
f. The device clears the interrupt in response to the Status Register being read.
The Write Multiple command transfers one block of data for each interrupt. The other commands transfer one sec-
tor of data for each interrupt.
If the device detects an invalid parameter, it will abort the command by setting BSY = 0, ERR = 1, ABT = 1, and
interrupting the host.
If an uncorrectable error occurs, the device will set BSY = 0 and ERR = 1, store the error status in the Error Regis-
ter, and interrupt the host. The registers will contain the location of the sector in error. The errored location will be
reported with CHS mode or LBA mode. The mode is decided by the mode select bit (bit 6) of the Device/Head reg-
ister on issuing the command.
All data transfers to the device through the Data Register are 16 bits except for the ECC bytes which are 8 bits.
Содержание Deskstar 7K80
Страница 2: ......
Страница 18: ...Deskstar 7K80 Hard Disk Drive Specification 14 ...
Страница 20: ...Deskstar 7K80 Hard Disk Drive Specification 16 ...
Страница 21: ...Deskstar 7K80 Hard Disk Drive specification 17 Part 1 Functional specification ...
Страница 22: ...Deskstar 7K80 Hard Disk Drive Specification 18 ...
Страница 24: ...Deskstar 7K80 Hard Disk Drive Specification 20 ...
Страница 34: ...Deskstar 7K80 Hard Disk Drive Specification 30 ...
Страница 36: ...Deskstar 7K80 Hard Disk Drive Specification 32 ...
Страница 55: ...Deskstar 7K80 Hard Disk Drive Specification 51 Part 2 Interface specification ...
Страница 56: ...Deskstar 7K80 Hard Disk Drive Specification 52 ...
Страница 76: ...Deskstar 7K80 Hard Disk Drive Specification 72 ...
Страница 84: ...Deskstar 7K80 Hard Disk Drive Specification 80 ...
Страница 118: ...Deskstar 7K80 Hard Disk Drive Specification 114 ...
Страница 250: ...Deskstar 7K80 Hard Disk Drive Specification 246 ...