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The Essential Guide to Serial ATA and SATA Express
book

The Essential Guide to Serial ATA and SATA Express

by David A. Deming
October 2014
Intermediate to advanced content levelIntermediate to advanced
496 pages
15h 38m
English
Auerbach Publications
Content preview from The Essential Guide to Serial ATA and SATA Express
SATA Transport Layer 253
queuing of the commands, the device returns a Register – Device to Host FIS, which clears the BSY bit
in the host, thus allowing it to send another command.
Command 5 Executes
In Figure 4.2, the device reorders the two commands based on Rotational Positional Ordering and
determines that the command with the TAG of 5 should be executed first. The device initiates the
command by issuing a DMA Setup FIS to the Host. When the host receives the DMA Setup FIS, it
determines the TAG value and activates the DMA control logic, which in turn programs the proper
Data Pointers. Now the First-party DMA transfer can commence. The De ...
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Publisher Resources

ISBN: 9781482243314