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Introduction
Figure 1-2. AC'97 with Audio and Modem Codec Connections
1.3.4
Low Pin Count (LPC) Interface
In the Intel
Count (LPC) interface. Migration to the LPC interface allows for lower cost Super I/O designs.
The LPC Super I/O component requires the same feature set as traditional Super I/O components.
It should include a keyboard and mouse controller, floppy disk controller and serial and parallel
ports. In addition to the Super I/O features, an integrated game port is recommended because the
AC'97 interface does not provide support for a game port. In a system with ISA audio, the game
port typically existed on the audio card. The fifteen pin game port connector provides for two
joysticks and a two-wire MPU-401 MIDI interface. Consult your preferred Super I/O vendor for a
comprehensive list of devices offered and features supported.
In addition, depending on system requirements, a device bay controller and USB hub could be
integrated into the LPC Super I/O component. For systems requiring ISA support, an ISA-IRQ to
serial-IRQ converter is required. Potentially, this converter could be integrated into the Super I/O.
1-12
a) AC'97 With Audio Codec
AC'97 Digital
I C H
( 2 4 1 m B G A )
b) AC'97 With Modem Codec
AC'97 Digital
I C H
( 2 4 1 m B G A )
c) AC'97 With Audio/Modem Codec
AC'97 Digital
I C H
( 2 4 1 m B G A )
d) AC'97 With Audio and Modem Codec
A C ' 9 7
Digital Link
I C H
( 2 4 1 m B G A )
810A3 chipset platform, the Super I/O (SIO) component has migrated to the Low Pin
A C ' 9 7
Link
A u d i o
C o d e c
A C ' 9 7
Link
M o d e m
C o d e c
A C ' 9 7
Link
Audio/
M o d e m
C o d e c
A C ' 9 7
M o d e m
C o d e c
A C ' 9 7
A u d i o
C o d e c
Audio Ports
M o d e m P o r t
M o d e m P o r t
Audio Ports
M o d e m P o r t
Audio Ports
a _ m _ c o n n . v s d
®
Intel
810A3 Chipset Design Guide
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