[ASAHI KASEI]
[AK4544A]
AC’ 97Ô Multimedia Audio CODEC with SRC
AK4544A
Features
General Description
· AC’ 97 Rev. 2.1 Compliant
· 18bit Resolution A/D and D/A
· Exceeds PC99 Performance Requirements:
AK4544A (@fs=48k)
The AK4544A is a 18bit high performance codec which support
variable sampling rate conversion compliant with Audio Codec ’ 97
Rev 2.1 requirements.
A/D………………90dBA
D/A………………89dBA
A-A………………95dBA
The AK4544A provides two pairs of stereo outputs with independent
volume controls, a mono output, and multiple stereo and mono inputs,
along with flexible mixing, gain and mute functions to provide a
complete integrated audio solution for PCs. In addition, the AK4544A
has the POP feature suitable for 3D positioning and direct output from
DAC for AD monitoring or docking station application.
· Analog Inputs:
4 Stereo Inputs: LINE, CD, VIDEO, AUX
Speakerphone and PC BEEP Inputs
2 Independent MIC Inputs
· Variable Sampling Rate Support
48k, 44.1k, 32k, 22.05k, 16k, 11.025k, 8k
· Analog Output:
Stereo LINE Output with volume control
True Line Level with volume control
Mono Output with volume control
· 3D Stereo Enhancement
The AK4544A can function as a Primary AC’ 97 or Secondary codec
depending on the codec ID configuration(Multiple codec extension),
making the AK4544A suitable for the docking station application and
multiple codec applications.
Sampling frequency is programmable through AC-link as 48k, 44.1k,
32k, 22.05k, 16k, 11.025k, and 8kHz. This setting is done independent
to ADC and DAC side while L/R channels are kept identical.
· POP Function & DAC Feed Back Control
· Multiple codec Capability
The AK4544A can work as a Primary or Secondary
codec depended on codec ID configuration.
· EAPD(External Amplifier Powerdown) Support
· Power Supplies: Analog 5.0V, Digital 5.0V or 3.3V
· Low Power Consumption
The AK4544A provides excellent audio performance, meeting or
exceeding PC99 requirements for a PCI audio solution. It has low
power consumption, and flexible power-down modes for use in laptops
as well as desktop PCs and aftermarket add-in boards.
Like the earlier pin-compatible AK4540, AK4541, AK4542, and
AK4543, the AK4544A is available in a compact 48-lead LQFP
package.
230mW(Analog:5V/Digital:3.3V) at full operation
·
48 Pin LQFP Package
Reference : Audio Codec ’ 97 Revision 2.1
nBlock Diagram
LINE_IN
Digital Section
Analog Section
SEL_CMOS
CD
PLL
AUX
Power Management
EAPD
SYNC
Volume
and
Mute
VIDEO
MIC1
Input
Multiplexer
ADC
AC
MIC2
Phone
AC'97
Link
Control
Registers
SDATA_OUT
SDATA_IN
Interface
PC_BEEP
and
Control Signals
DAC
Control
Volume
and
Mute
Logic
Dataslot
Output
Mixer
LINE_OUT
Controller
BIT_CLOCK
RESET#
Control
TRUE_LINE_LEVEL
MONO_OUT
Multiple Codec Support
Clock Generator
Voltage
Reference
3D Stereo Enhancement
Codec ID#
* AKM assumes no responsibility for the usage beyond the conditions in this data sheet.
<MS0026-E-00>
2000/04
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