Avance Logic ALS100, User Manual, Page: 37 / 48

ALS100/L/M User’s Guide 10070 1.0
AS9538 PC Notebook Sound System Design 27
AS9538 PC Notebook Sound System Design
The AS9538 sound system design is based on the ALS100L Integrated Audio
Subsystem ASIC, the 3.3 V input voltage version of the ALS100. It is a 16-bit
ISA Plug and Play design with a Game/MIDI port, audio inputs from an
ATAPI IDE/Sony CD-ROM audio connector and Microphone In and Line In
jacks, and outputs from Line Out and an optional Speaker Out jacks. The
AS9538 sound system design contains a Yamaha OPL3 FM Synthesizer.
The AS9548 sound card contains an example of the AS9538 sound system de-
sign and is intended for the evaluation of that design (see “AS9548 Sound Card
Description” on page 9 and “AS9548 Sound Card” on page 24). The AS9548
sound card has circuitry in addition to the AS9538 sound system design so that
it can operate in a standard PC for a more convenient evaluation platform.