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82801AA and 82801AB
Datasheet
xvii
12.1.13 SID—Subsystem ID Register (Audio—D31:F5).............................12-6
12.1.14 INTR_LN—Interrupt Line Register (Audio—D31:F5).....................12-6
12.1.15 INTR_PN—Interrupt Pin Register (Audio—D31:F5)......................12-7
AC’97 Audio I/O Space (D31:F5)................................................................12-7
12.2.1 x_BDBAR—Buffer Descriptor Base Address Register ................12-10
12.2.2 x_CIV—Current Index Value Register .........................................12-10
12.2.3 x_LVI—Last Valid Index Register................................................12-10
12.2.4 x_SR—Status Register................................................................12-11
12.2.5 x_PICB—Position In Current Buffer Register ..............................12-12
12.2.6 x_PIV—Prefetched Index Value Register....................................12-12
12.2.7 x_CR—Control Register ..............................................................12-13
12.2.8 GLOB_CNT—Global Control Register.........................................12-14
12.2.9 GLOB_STA—Global Status Register ..........................................12-14
12.2.10 CAS—Codec Access Semaphore Register.................................12-16
12.2
13
AC ’97 Modem Controller Registers (D31:F6).........................................................13-1
13.1
AC ’97 Modem PCI Configuration Space (D31:F6) ....................................13-1
13.1.1 VID—Vendor Identification Register (Modem—D31:F6) ...............13-2
13.1.2 DID—Device Identification Register (Modem—D31:F6)................13-2
13.1.3 PCICMD—PCI Command Register (Modem—D31:F6) ................13-2
13.1.4 PCISTA—Device Status Register (Modem—D31:F6)...................13-3
13.1.5 RID—Revision Identification Register (Modem—D31:F6).............13-3
13.1.6 PI—Programming Interface Register (Modem—D31:F6) ..............13-3
13.1.7 SCC—Sub Class Code Register (Modem—D31:F6).....................13-4
13.1.8 BCC—Base Class Code Register (Modem—D31:F6)...................13-4
13.1.9 HEDTYP—Header Type Register (Modem—D31:F6)...................13-4
13.1.10 MMBAR—Modem Mixer Base Address Register
(Modem—D31:F6) .........................................................................13-5
13.1.11 MBAR—Modem Base Address Register (Modem—D31:F6) ........13-5
13.1.12 SVID—Subsystem Vendor ID (Modem—D31:F6) .........................13-6
13.1.13 SID—Subsystem ID (Modem—D31:F6) ........................................13-6
13.1.14 INTR_LN—Interrupt Line Register (Modem—D31:F6)..................13-7
13.1.15 INT_PIN—Interrupt Pin (Modem—D31:F6) ...................................13-7
13.2
AC’97 Modem I/O Space (D31:F6).............................................................13-8
13.2.1 x_BDBAR—Buffer Descriptor List Base Address Register..........13-10
13.2.2 x_CIV—Current Index Value Register .........................................13-10
13.2.3 x_LVI—Last Valid Index Register................................................13-10
13.2.4 x_SR—Status Register................................................................13-11
13.2.5 x_PICB—Position In Current Buffer Register ..............................13-12
13.2.6 x_PIV—Prefetch Index Value Register........................................13-12
13.2.7 x_CR—Control Register ..............................................................13-13
13.2.8 GLOB_CNT—Global Control Register.........................................13-14
13.2.9 GLOB_STA—Global Status Register ..........................................13-14
13.2.10 CAS—Codec Access Semaphore Register.................................13-15
14
Electrical Characteristics..........................................................................................14-1
14.1
Absolute Maximum Ratings ........................................................................14-1
14.2
Thermal Characteristics..............................................................................14-1
14.3
D.C. Characteristics....................................................................................14-1
14.4
A.C. Characteristics ....................................................................................14-6
14.5
Timing Diagrams.......................................................................................14-16