876784 Intel, 876784 Datasheet - Page 640
876784
Manufacturer Part Number
876784
Description
Manufacturer
Intel
Datasheet
1.876784.pdf
(848 pages)
Specifications of 876784
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16.2.8
640
GLOB_CNT—Global Control Register (Audio—D30:F2)
I/O Address:
Default Value:
Lockable:
31:30
29:24
23:22
21:20
19:7
Bit
6
5
4
S/PDIF Slot Map (SSM) — R/W. If the run/pause bus master bit (bit 0 of offset 2Bh)
is set, then the value in these bits indicate which slots S/PDIF data is transmitted on.
Software must ensure that the programming here does not conflict with the PCM
channels being used. If there is a conflict, unpredictable behavior will result — the
hardware will not check for a conflict.
00 = Reserved
01 = Slots 7 and 8
10 = Slots 6 and 9
11 = Slots 10 and 11
Reserved.
PCM Out Mode (POM) — R/W. Enables the PCM out channel to use 16- or 20-bit audio
on PCM out. This does not affect the microphone of S/PDIF DMA. When greater than
16-bit audio is used, the data structures are aligned as 32-bits per sample, with the
highest order bits representing the data, and the lower order bits as don’t care.
00 = 16 bit audio (default)
01 = 20 bit audio
10 = Reserved. If set, indeterminate behavior will result.
11 = Reserved. If set, indeterminate behavior will result.
PCM 4/6 Enable — R/W. This field configures PCM Output for 2-, 4- or 6-channel
mode.
00 = 2-channel mode (default)
01 = 4-channel mode
10 = 6-channel mode
11 = Reserved
Reserved.
ACZ_SDIN2 Interrupt Enable — R/W.
0 = Disable.
1 = Enable an interrupt to occur when the codec on the ACZ_SDIN2 causes a resume
NOTE: This bit is not affected by AC ‘97 Audio Function D3
ACZ_SDIN1 Interrupt Enable — R/W.
0 = Disable.
1 = Enable an interrupt to occur when the codec on the ACZ_SDIN1 causes a resume
NOTE: This bit is not affected by AC ‘97 Audio Function D3
ACZ_SDIN0 Interrupt Enable — R/W.
0 = Disable.
1 = Enable an interrupt to occur when the codec on ACZ_SDIN0 causes a resume event
NOTE: This bit is not affected by AC ‘97 Audio Function D3
event on the AC-link.
event on the AC-link.
on the AC-link.
NABMBAR + 2Ch
00000000h
No
AC ’97 Audio Controller Registers (D30:F2) (Desktop and Mobile Only)
Description
Attribute:
Size:
Power Well:
Intel
HOT
HOT
HOT
R/W, R/W (special)
32 bits
Core
to D0 reset.
to D0 reset.
to D0 reset.
®
ICH7 Family Datasheet
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