Preliminary
www.ti.com
Registers
Table 16-4. HBA Capabilities Register (CAP) Field Descriptions (continued)
Bit
Field
Value
Description
4-0
NP
Number of Ports. 0’s based value indicating the number of Ports supported by the SATSS.
0
1 Port
1
2 Ports
2h - Fh
Reserved
16.4.2 Global HBA Control Register (GHC)
The global HBA control register (GHC) provides various global functions for the SATASS.
The GHC register is shown in
and described in
Figure 16-3. Global HBA Control Register (GHC)
31
30
16
AE
Reserved
R-1
R-0
15
2
1
0
Reserved
IE
HR
R-0
R/W-0
W-0
LEGEND: R/W = Read/Write; R = Read only; W = Write only; -n = value after reset
Table 16-5. Global HBA Control Register (GHC) Field Descriptions
Bit
Field
Value
Description
31
AE
1
AHCI Enable. This bit is always set since SATASS supports only AHCI mode as indicated by the SAM
bit in the HBA capabilities register (CAP) = 1.
30-2
Reserved
0
Reserved.
1
IE
Interrupt Enable. This global bit enables interrupts from the SATASS. This field is reset on Global reset
(GHC.HR = 1).
0
All interrupt sources from all the Ports are disabled (masked).
1
Interrupts are enabled and any SATASS interrupt event causes interrupt output assertion.
0
HR
0
HBA Reset. When set by the software, this bit causes an internal Global reset of the SATASS. All state
machines that relate to data transfers and queuing return to an idle state, and all the Ports are
reinitialized by sending COMRESET if staggered spin-up is not supported. If staggered spin-up is
supported, then it is the responsibility of the software to spin-up each Port after this reset has
completed. The SATASS clears this bit when the reset action is done. A software write of 0 has no
effect.
1595
SPRUGX9 – 15 April 2011
Serial ATA (SATA) Controller
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
Страница 2: ...Preliminary 2 SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 92: ...92 Read This First SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1122: ...1122 Multichannel Audio Serial Port McASP SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1562: ...1562 Real Time Clock RTC SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1658: ...1658 Timers SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1750: ...1750 UART IrDA CIR Module SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
Страница 1984: ...1984 Universal Serial Bus USB SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...