ADSP-219x/2192 DSP Hardware Reference B-41
ADSP-2192 DSP Peripheral Registers
AC’97 Controller Registers
These control registers for the serial port are used for audio (sound) and
modem, specifically V.90 modems under codec control.
Table B-17. AC’97 Control Registers
Register
Name
Description
PCI
Address
USB Address
DSP
I/O
Page
DSP
I/O
Address
AC97LCTL
AC’97 Link
Control
Setup control for
AC’97 interface
0x0C1-0x0C0
0x00C1-0x00C0
0x00
0xC0
AC97STAT
AC’97 Link
Status
Setup control for
AC’97 interface
0x0C3-0x0C2
0x00C3-0x00C2
0x00
0xC2
AC97SEN
AC’97 Slot
Enable Register
Setup control for
AC’97 interface
0x0C5-0x0C4
0x00C5-0x00C4
0x00
0xC4
AC97SVAL
AC’97 Input Slot
Valid
Current status of
valid frame from
AC’97 link
0x0C7-0x0C6
0x00C7-0x00C6
0x00
0xC6
AC97SREQ
AC’97 Slot
Request
Current status of
AC’97 slot
requests
0x0C9-0x0C8
0x00C9-0x00C8
0x00
0xC8