ADSP-219x/2192 DSP Hardware Reference B-45
ADSP-2192 DSP Peripheral Registers
AC’97 Codec Registers
These register spaces are used to access registers in external codecs that are
connected to the AC’97 port. Refer to the standard list provided in docu-
mentation for your codec. The IDs associated with primary, secondary,
and tertiary registers report addressing information available for accessing
the codecs.
AC’97 Codec Register Space-Primary Codec 0 (AC97EXT0)
Register
AC’97 Codec Register Space, Secondary Codec 1
(AC97EXT1) Register
Table B-18. AC’97 External Codec Space 0 Registers
Register
Name
Description
PCI
Address
USB Address
DSP
I/O
Page
DSP I/O
Address
AC97EXT0
AC’97 External
Codec Space 0.
External Primary
Codec 0 Register
0x47F-0x400
0x047F-0x0400
0x04
0x7F-0x00
Table B-19. AC’97 External Codec Space 1 Registers
Register
Name
Description
PCI
Address
USB Address
DSP
I/O
Page
DSP
I/O
Address
AC97EXT1
AC’97 External
Codec Space 1.
External Second-
ary Codec 1 Reg-
ister
0x57F-0x500
0x057F-0x0500
0x05
0x7F-0x00
