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Registers
Table 16-27. Port Command Register (P#CMD) Field Descriptions (continued)
Bit
Field
Value
0
ST
0-1
1616
Serial ATA (SATA) Controller
Preliminary
Description
Start. When set to 1, the Port processes the command list. When cleared, the Port does not process the
command list. Whenever this bit is changed from a 0 to a 1, the Port starts processing the command list
at entry 0. Whenever this bit is changed from a 1 to a 0, the P0CI register is cleared by the Port upon
transition into an idle state. Refer to the AHCI specification for important restrictions on when this bit can
be set to 1.
© 2011, Texas Instruments Incorporated
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SPRUGX9 – 15 April 2011
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