HGST Travelstar 7K500 BE, 320GB 0A79103 User Manual
Product codes
0A79103
7K500 OEM Specification
Page 72 of 176
Standby Immediate
Write Uncorrectable Ext
Write Uncorrectable Ext
Execution of these commands involves no data transfer.
13.4
13.4
13.4
13.4 DMA Data Transfer Commands
DMA Data Transfer Commands
DMA Data Transfer Commands
DMA Data Transfer Commands
These commands are:
Read DMA
Read DMA Ext
Write DMA
Write DMA Ext
Write DMA FUA Ext
Read DMA Ext
Write DMA
Write DMA Ext
Write DMA FUA Ext
Initiation of the DMA transfer commands is identical to the Read Sector or Write Sector commands
except that the host initializes the slave-DMA channel prior to issuing the command.
except that the host initializes the slave-DMA channel prior to issuing the command.
The DMA protocol allows high performance multi-tasking operating systems to eliminate processor
overhead associated with PIO transfers.
overhead associated with PIO transfers.
Refer Functional Specification part for further details.
13.5
13.5
13.5
13.5 First
First
First
First----parity DMA
parity DMA
parity DMA
parity DMA Commands
Commands
Commands
Commands
These commands are:
Read FPDMA Queued
Write FPDMA Queued
Write FPDMA Queued
Execution of this class of commands includes command queuing and the transfer of one or more
blocks of data between the device and the host. The protocol is described in the section 11.14
“FPDMA Queued command protocol” of “Serial ATA revision 2.6”.
blocks of data between the device and the host. The protocol is described in the section 11.14
“FPDMA Queued command protocol” of “Serial ATA revision 2.6”.