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R
send byte/receive byte/ write byte/write word/read word/block read/block write
command with clock synchronization function as well as 10-bit addressing ability. Please
see Section
connected to the SMBus. Please review the ALi M1535D+ Data sheets for more detailed
information.
AC97 Audio
The ALi South Bridge has a built-in Audio that is combined with a standard AC97 CODEC,
LM4550. Below is a list of the features available to the user. The ALi M1535D+ is used in
conjunction with an LM4550. Please review the ALi M1535D+ and LM4550 Data sheets,
located on the ML310 CDROM, for more detailed information.
The ML310 employs a National Semiconductor, LM4550, Audio CODEC combined with
the ALi South Bridge AC97 interface. This interface can be used to play and record audio.
The LM4550 has a left and right channel Line inputs, a microphone input, left and right
channel line outputs and an amplified version headphone output suitable for driving an 8
ohm load via LM4880 (U2). The audio jacks are available on the J1 and J2 connector
assemblies. Please consult the M1535D+, LM4550 and LM4880 data sheets in conjunction
with the ML310 schematics for more details on the ML310 Audio interface.
Table 2-19
Table 2-19: Audio Jacks, J1 and J2
J1 top
J1 Bottom
J2 Top
J2 Bottom
46
"IIC/SMBus Interface"
♦
AC97 CODEC 2.1 Specification Compliant
♦
CODEC Variable Sample Rate Support
♦
32-voice Hardware Wave-table Synthesis
♦
32 Independent DMA _channels
♦
3D Positioning Sound Acceleration
♦
Legacy Sound Blaster compatible
♦
FM OPL3 emulation
♦
MIDI Interpretation
♦
MIDI MPU-401 interface
describes the audio jacks available to the user on the ML310.
Audio Jack
Signal name
AC _AMP_OUTR
AC _AMP_OUTL
AC_MIC_IN
AC _LINE_OUTR
AC _LINE_OUTL
AC _LINE_INR
AC_LINE_INL
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Chapter 2: ML310 Embedded Development Platform
for more information regarding the devices that are
Description
AC Amplified Output,
driven by U2, LM4880
Microphone Input to U1, LM4550
AC Line Output, Left and Right channels,
driven by U1, LM4550
AC Line Input, Left and Right channels,
driven by U1, LM4550
ML310 User Guide
UG068 (v1.01) August 25, 2004
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