Intel® HD Audio (D27:F0)
10.3.8
GSTS—Global Status Register
Memory Address:
Default Value:
LBAR + 10h
0000h
Attribute:
Size:
R/WC, RO
16 bits
Default
Bit
and
Description
Access
000h
RO
15:4
Reserved
Dock Mated Interrupt Status (DMIS): A 1 indicates that the dock
mating or unmating process has completed. For the docking process it
indicates that dock is electrically connected and that software may detect
and enumerate the docked codecs. For the undocking process it indicates
that the dock is electrically isolated and that software may report to the
user that physical undocking may commence. This bit gets set to a 1 by
hardware when the DM bit transitions from a 0 to a 1 (docking) or from a
1 to a 0 (undocking). Note that this bit is set regardless of the state of the
DMIE bit.
0
3
R/WC
Software clears this bit by writing a 1 to it. Writing a 0 to this bit has no
effect.
Dock Mated (DM): This bit effectively communicates to software that an
Intel HD Audio docked codec is physically and electrically attached.
Controller hardware sets this bit to 1 after the docking sequence triggered
by writing a 1 to the Dock Attach (GCTL.DA) bit is completed
(HDA_DOCKRST# deassertion). This bit indicates to software that the
docked codec(s) may be discovered by the STATESTS register and then
enumerated.
0
RO
2
Controller hardware sets this bit to 0 after the undocking sequence
triggered by writing a 0 to the Dock Attach (GCTL.DA) bit is completed
(DOCK_EN# deasserted). This bit indicates to software that the docked
codec(s) may be physically undocked.
This bit is Read Only. Writes to this bit have no effect.
Flush Status: This bit is set to 1 by hardware to indicate that the flush
cycle initiated when the Flush Control bit (LBAR + 08h, Bit 1) was set has
completed. Software must write a 1 to clear this bit before the next time
the Flush Control bit is set to clear the bit.
0
1
0
R/WC
0
RO
Reserved
Datasheet
149
INTEL [ INTEL ]
