NH82801DB S L8DE Intel, NH82801DB S L8DE Datasheet - Page 490
NH82801DB S L8DE
Manufacturer Part Number
NH82801DB S L8DE
Description
Manufacturer
Intel
Datasheet
1.NH82801DB_S_L8DE.pdf
(587 pages)
Specifications of NH82801DB S L8DE
Lead Free Status / RoHS Status
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AC ’97 Audio Controller Registers (D31:F5)
14.2.10
490
CAS—Codec Access Semaphore Register
I/O Address:
Default Value:
Lockable:
Reads across DWord boundaries are not supported.
Bit
4:3
Bit
7:1
8
7
6
5
2
1
0
0
AC_SDIN0 Codec Ready (S0CR) — RO. This bit reflects the state of the codec ready bit in
AC_SDIN [0]. Bus masters ignore the condition of the codec ready bits, so software must check this
bit before starting the bus masters. Once the codec is “ready”, it must never go “not ready”
spontaneously.
0 = Not Ready.
1 = Ready.
Mic In Interrupt (MINT) — RO.
0 = When the specific status bit is cleared, this bit will be cleared.
1 = This bit indicates that one of the Mic in channel interrupts status bits has been set.
PCM Out Interrupt (POINT) — RO.
0 = When the specific status bit is cleared, this bit will be cleared.
1 = This bit indicates that one of the PCM out channel interrupts status bits has been set.
PCM In Interrupt (PIINT) — RO.
0 = When the specific status bit is cleared, this bit will be cleared.
1 = This bit indicates that one of the PCM in channel interrupts status bits has been set.
Reserved
Modem Out Interrupt (MOINT) — RO.
0 = When the specific status bit is cleared, this bit will be cleared.
1 = This bit indicates that one of the modem out channel interrupts status bits has been set.
Modem In Interrupt (MIINT) — RO.
0 = When the specific status bit is cleared, this bit will be cleared.
1 = This bit indicates that one of the modem in channel interrupts status bits has been set.
GPI Status Change Interrupt (GSCI) — R/WC.
0 = The bit is cleared by software writing a 1 to this bit location.
1 = This bit reflects the state of bit 0 in slot 12, and is set when bit 0 of slot 12 is set. This indicates
This bit is not affected by D3
Reserved.
Codec Access Semaphore (CAS) — R/W-Special. This bit is read by software to check whether a
codec access is currently in progress.
0 = No access in progress.
1 = The act of reading this register sets this bit to 1. The driver that read this bit can then perform
that one of the GPIs changed state, and that the new values are available in slot 12.
an I/O access. Once the access is completed, hardware automatically clears this bit.
NABMBAR + 34h
00h
No
HOT
to D0 Reset.
Description
Description
Attribute:
Size:
Power Well:
Intel
R/W
8 bits
Core
®
82801DB ICH4 Datasheet
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