82801BA Datasheet, PDF (488/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

I/O Register Index
Table A-2. ICH2 Variable I/O Registers (Continued)
Register Name
Offset
EDS Section and Location
Global Control
Global Status
Codec Access Semaphore Register
2Ch
Section 13.2.8, “GLOB_CNT—Global Control
Register” on page 13-14
30h
Section 13.2.9, “GLOB_STA—Global Status Register”
on page 13-15
34h
Section 13.2.10, “CAS—Codec Access Semaphore
Register” on page 13-16
AC’97 Modem I/O Registers at MBAR + Offset
MBAR is set in Section 14.1.11, “MBAR—Modem Base Address Register (Modem—D31:F6)” on
page 14-5
Modem In Buffer Descriptor List Base
Address Register
Modem In Current Index Value
Register
Modem In Last Valid Index Register
Modem In Status Register
Modem In Position In Current Buffer
Register
Modem In Prefetch Index Value
Register
Modem In Control Register
Modem Out Buffer Descriptor List
Base Address Register
Modem Out Current Index Value
Register
Modem Out Last Valid Register
Modem Out Status Register
Modem In Position In Current Buffer
Register
Modem Out Prefetched Index
Register
Modem Out Control Register
Global Control
Global Status
Codec Access Semaphore Register
00h
Section 14.2.1, “x_BDBAR—Buffer Descriptor List
Base Address Register” on page 14-8
04h
Section 14.2.2, “x_CIV—Current Index Value
Register” on page 14-9
05h
Section 14.2.3, “x_LVI—Last Valid Index Register” on
page 14-9
06h
Section 14.2.4, “x_SR—Status Register” on
page 14-10
08h
Section 14.2.5, “x_PICB—Position In Current Buffer
Register” on page 14-11
0Ah
Section 14.2.6, “x_PIV—Prefetch Index Value
Register” on page 14-11
0Bh
Section 14.2.7, “x_CR—Control Register” on
page 14-11
10h
Section 14.2.1, “x_BDBAR—Buffer Descriptor List
Base Address Register” on page 14-8
14h
Section 14.2.2, “x_CIV—Current Index Value
Register” on page 14-9
15h
Section 14.2.3, “x_LVI—Last Valid Index Register” on
page 14-9
16h
Section 14.2.4, “x_SR—Status Register” on
page 14-10
18h
Section 14.2.5, “x_PICB—Position In Current Buffer
Register” on page 14-11
1Ah
Section 14.2.6, “x_PIV—Prefetch Index Value
Register” on page 14-11
1Bh
Section 14.2.7, “x_CR—Control Register” on
page 14-11
3Ch
Section 14.2.8, “GLOB_CNT—Global Control
Register” on page 14-12
40h
Section 14.2.9, “GLOB_STA—Global Status Register”
on page 14-13
44h
Section 14.2.10, “CAS—Codec Access Semaphore
Register” on page 14-14
A-10
82801BA ICH2 and 82801BAM ICH2-M Datasheet