Intel ® 6300Esb I/O Controller Hub Modem Mixer Register Configuration - Intel 6300ESB Datasheet

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14—Intel 6300ESB ICH
14.2 AC'97 Modem I/O Space (D31:F6)
In the case of split codec implementation, accesses to the modem mixer registers in
different codecs are differentiated by the controller by using address offsets 00h - 7Fh
for the primary codec and address offsets 80h - FEh for the secondary codec.
shows the register addresses for the modem mixer registers.
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Table 516. Intel 6300ESB I/O Controller Hub Modem Mixer Register
Configuration
Primary
00h:38h
3Ch
3Eh
40h
42h
44h
46h
48h
4Ah
4Ch
4Eh
50h
52h
54h
56h
58h
5Ah
7Ch
7Eh
NOTES:
1. Registers in italics are for functions not supported by the Intel
2. Software should not try to access reserved registers.
3. The Intel
Codec ID is 00 or 01. However, the Intel
modem codec. For a complete list of topologies, see the Intel
Platform Design Guide.
The Global Control (GLOB_CNT) and Global Status (GLOB_STA) registers are aliased to
the same global registers in the audio and modem I/O space. Therefore a read/write to
these registers in either audio or modem I/O space affects the same physical register.
S/W could access these registers as bytes, word, or dWord quantities, but reads must
not cross dWord boundaries.
These registers exist in I/O space and reside in the AC '97 controller. The two channels,
Modem in and Modem out, each have their own set of Bus Mastering registers. The
following register descriptions apply to both channels. The naming prefix convention
November 2007
Order Number: 300641-004US
Register
Secondary
80h:B8h Intel Reserved
BCh Extended Modem ID
BEh Extended Modem Stat/Ctrl
C0h Line 1 DAC/ADC Rate
C2h Line 2 DAC/ADC Rate
C4h Handset DAC/ADC Rate
C6h Line 1 DAC/ADC Level Mute
C8h Line 2 DAC/ADC Level Mute
CAh Handset DAC/ADC Level Mute
CCh GPIO Pin Config
CEh GPIO Polarity/Type
D0h GPIO Pin Sticky
D2h GPIO Pin Wake Up
D4h GPIO Pin Status
D6h Misc. Modem AFE Stat/Ctrl
D8h AC'97 Reserved
DAh Vendor Reserved
FCh Vendor ID1
FEh Vendor ID2
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6300ESB ICH supports a modem codec connected to AC_SDIN[2:0] as long as the
MMBAR Exposed Registers (D31:F6)
Name
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6300ESB ICH.
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6300ESB ICH does not support more than one
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875P/E7210/6300ESB Chipset
Intel
Table 516
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6300ESB I/O Controller Hub
DS
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