82443MX Datasheet, PDF (89/173 Pages) Intel Corporation – PCIset

82443MX PCIset
Table 49. SMRAM Range Decode
SMRAM Decode H_SMRAME
TSEG_EN
A Range
H Range
Disable
x
x
Disable
Disable
Enable
0
0
Enable
Disable
Enable
0
1
Enable
Disable
Enable
1
0
Enable
Enable
Enable
1
1
Enable
Enable
T Range
Disable
Disable
Enable
Disable
Enable
G_SMRAME D_LCK
0
x
1
0
1
0
1
0
1
0
1
0
1
1
1
1
1
1
Table 50. SMRAM Decode Control
D_CLS
D_OPEN
SMM Mode SMM Code
Fetch
SMM Data
Fetch
x
x
x
Disable
Disable
x
0
0
Disable
Disable
0
0
1
Enable
Enable
0
1
x
Enable
Enable
1
0
1
Enable
Disable
1
1
x
Invalid
Invalid
x
x
0
Disable
Disable
0
x
1
Enable
Enable
1
x
1
Enable
Disable
7.4 AC’97 Audio and Modem Controller
7.4.1 AC’97 AUDIO CONTROLLER
This section is based on the AC’97 Rev 2.0 specification (draft rev. 0.96).
AC'97 includes the following audio features:

Independent (FDX) channels for stereo PCM in, stereo PCM out, and mono Mic in

Supports 16-bit samples for stereo PCM out

Supports multiple sample rate AC'97 2.0 codecs (48 KHz and below)

Supports dual codec implementations for audio in mobile

Supports read/write access to all Primary and Secondary AC'97 registers
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