FW82801EB Intel, FW82801EB Datasheet - Page 569
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FW82801EB
Manufacturer Part Number
FW82801EB
Description
Manufacturer
Intel
Datasheet
1.FW82801EB.pdf
(671 pages)
Specifications of FW82801EB
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Intel
®
Table 173. Modem Registers
82801EB ICH5 / 82801ER ICH5R Datasheet
Note: Internal reset as a result of D3
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 used is as follows:
MI = Modem in channel
MO = Modem out channel
NOTE:
registers shared with the AC ’97 audio controller (GCR, GSR, CASR). All resume well registers
will not be reset by the D3
Core well registers and bits not reset by the D3
Resume well registers and bits will not be reset by the D3
1. MI = Modem in channel; MO = Modem out channel
3Ch–3Fh
00h–03h
06h–07h
08h–09h
10h–13h
16h–17h
18h–19h
40h–43h
•
•
•
•
Offset
0Ah
0Bh
1Ah
1Bh
04h
05h
14h
15h
44h
offset 3Ch
offset 40h
offset 44h – Codec Access Semaphore Register (CAS)
offset 40h
MO_BDBAR
GLOB_CNT
GLOB_STA
Mnemonic
MI_BDBAR
–
–
MI_PICB
MI_PICB
MO_CIV
–
MO_PIV
MO_LVI
MO_SR
MO_CR
MI_CIV
MI_PIV
MI_LVI
MI_CR
43h – bits [29,15,11:10] Global Status (GLOB_STA)
43h – bits [17:16] Global Status (GLOB_STA)
MI_SR
3Fh – bits [6:0] Global Control (GLOB_CNT)
CAS
HOT
Modem In Buffer Descriptor List Base
Address
Modem In Current Index Value
Modem In Last Valid Index
Modem In Status
Modem In Position In Current Buffer
Modem In Prefetch Index Value
Modem In Control
Modem Out Buffer Descriptor List Base
Address
Modem Out Current Index Value
Modem Out Last Valid
Modem Out Status
Modem In Position In Current Buffer
Modem Out Prefetched Index
Modem Out Control
Global Control
Global Status
Codec Access Semaphore
HOT
to D0 transition.
to D0 transition will reset all the core well registers except the
Name
AC ’97 Modem Controller Registers (D31:F6)
HOT
to D0 transition:
HOT
to D0 transition:
00000000h
00000000h
00000000h
00300000h
Default
0001h
0000h
0001h
0000h
00h
00h
00h
00h
00h
00h
00h
00h
00h
R/W (special)
R/W (special)
R/W (special)
R/W (special)
R/WC, RO
R/WC, RO
RO, R/W,
Access
R/WC
R/W,
R/W,
R/W,
R/W
R/W
R/W
R/W
RO
RO
RO
RO
RO
RO
569
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