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Technologies, Inc.
Revision 2.4, May 28, 2002
4 - 41
Hardware Interfaces & Interface Registers
VT1712 - PCI Multi-Channel Audio Controller
MT3C: Digital Mixer Monitor Routing Control
Address Offset: 3Ch
Default Value: 00h
Figure 4-7. Digital Mixer Functional Diagram
Bits
Attribute
Description
7:6
R0
-
0
R/W
1: Route digital mixer output to the Consumer AC’97 path by allocating Channel-A and B.
Σ
DMA Channel-10
DMA Channel-11
(Playback)
(Record)
slot 10slot 1.....
slot 1.....
slot 10
....
....
36b
36b
24b
24b
24b
0dB
-144dB
Left Monitor Output
(routingselection via MT30, MT32, MT3C)
0dB
-144dB
0dB
-144dB
0dB
-144dB
MT38
MT38
(Stream attenuator selection via MT3A)
Σ
DMA Channel-10
DMA Channel-11
(Playback)
(Record)
slot 10slot 1.....
slot 1.....
slot 10
....
....
36b
36b
24b
24b
24b
0dB
-144dB
Right Monitor Output
(routingselection via MT30, MT32, MT3C)
-144dB
0dB
-144dB
0dB
-144dB
MT39
MT39
(Stream attenuator selection via MT3A)
0dB
Peak
Peak Peak
Peak
Peak
Peak
Peak
Peak
Peak
Peak
Read peaks via MT3E, MT3F
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