AK4541 Datasheet, PDF (1/31 Pages) Asahi Kasei Microsystems – AC’97 Rev 2.1 Multimedia Audio CODEC

[ASAHI KASEI]
[AK4541]
AK4541
AC’97™ Rev 2.1 Multimedia Audio CODEC
Features
• AC’97 Rev. 2.1 Compliant
• 18bit Resolution A/D and D/A
• Exceeds a PC98/99 Performance Categories:
A/D……………… 87dBA SNR
D/A……………… 87dBA SNR
D/A+Mixer…...… 85dBA SNR
A-A……………… 92dBA SNR
• Analog Inputs:
4 Stereo Inputs: LINE, CD, VIDEO, AUX
Speakerphone and PC BEEP Inputs
2 Independent MIC Inputs
• Direct PC_Beep Pass Through for lower system costs
• Analog Output:
Stereo LINE Output with volume control
True Line Level with volume control
Mono Output with volume control
• Multiple codec Capability
The AK4541 can work as a Primary or Secondary.
• EAPD(External Amplifier Powerdown) Support
• Power Supplies:
Analog 3.3V, Digital 3.3V
• Lower Power Consumption:
135mW at full operation
• 48 Pin LQFP Package
General Description
The AK4541 is a 18bit high performance codec compliant with
Audio Codec ’97 Rev 2.1 requirements. The AC Link serial interface
allows the AK4541 to be used with digital controllers as well as
custom logic accelerators to meet PC98 and PC99 requirements for a
PCI audio solution.
The AK4541 provides two pairs of stereo outputs with independent
volume controls along with a mono output, multiple stereo and mono
inputs, are combined to create flexible mixing, gain and mute
functions to provide a complete integrated audio solution for PCs.
The AK4541 can function as a Primary AC’97 or Secondary codec
depending on the codec ID configuration(Multiple codec extension),
making the AK4541 suitable for the docking station application and
multiple codec applications such as 4 speaker output or 6 speaker
output.
Sampling at 48kHz, the AK4541 provides excellent audio
performance. It offers extreme low power consumption, and flexible
power-down modes for use in Sub-NoteBook, laptops, desktop PCs,
and aftermarket add-in boards.
Like the earlier pin-compatible AK4540, AK4542 and AK4543, the
AK4541 is available in a compact 48-lead LQFP package.
The AK4541 is a pin compatible upgrade for the AK4540, AK4542
and AK4543, some software changes will be required to experience
the extra functions ot the AK4541.
EAPD
SYNC
SDATA_OUT
SDATA_IN
BIT_CLOCK
RESET#
Codec ID#
Digital Section
Analog Section
Power Management
AC
Link
Interface
18bit
AC'97
ADC
Registers
and Control Signals
Control
Logic
18bit
DAC
Multiple Codec Support
Input
Multiplexer
Output
Mixer
Volume
and
Mute
Control
Volume
and
Mute
Control
Clock Generator
Voltage
Reference
3D Stereo Enhancement
LINE_IN
CD
AUX
VIDEO
MIC1
MIC2
Phone
PC_BEEP
LINE_OUT
TRUE_LINE_LEVEL
MONO_OUT
* AKM assumes no responsibility for the usage beyond the conditions in this data sheet.
<M0047-E-01>
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1999/01