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AK4545VQ Datasheet(PDF) 1 Page - Asahi Kasei Microsystems

Part # AK4545VQ
Description  AC97 AUDIO CODEC WITH SRC AND DIT
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK4545VQ Datasheet(HTML) 1 Page - Asahi Kasei Microsystems

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[ASAHI KASEI]
[AK4545]
MS0058-E-00
2000/11
- 1 -
nBlock Diagram
Input
Multiplexer
ADC
Volume
and
Mute
Control
Output
Mixer
DAC
PLL
Power Management
AC
Link
Interface
AC’97
Registers
and
Control
Logic
Control Singals
Volume
and
Mute
Control
Dataslot
Controller
Clock
Generator
Voltage
Reference
3D Stereo Enhancement
Digital Section
Analog Section
TX
EAPD
SYNC
SDATA_OUT
SDATA_IN
BIT_CLK
RESET#
Clock
Generator
S/PDIF Out
Control
LINE_IN
CD
AUX
VIDEO
MIC1
MIC2
Phone
PC_BEEP
LINE_OUT
TRUE_LINE_LEVEL
MONO_OUT
General Description
The AK4545 is a 18bit high performance codec which supports
variable sampling rate conversion compliant with Audio Codec ’ 97
Rev 2.1 requirements.
The AK4545 supports S/PDIF output that is digital audio transmitter
of IEC958. Audio digital data in PC can be output by this S/PDIF out.
The AK4545 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 AK4545
has the POP feature suitable for 3D positioning and direct output from
DAC for AD monitoring.
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.
The AK4545 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 AK4541, AK4543 and AK4544A , the
AK4545 is available in a compact 48-lead LQFP package.
Reference : Audio Codec ’ 97 Revision 2.1
Features
• AC’ 97 Rev. 2.1 Compliant
• S/PDIF output
• 18bit Resolution A/D and D/A
• Exceeds PC99 Performance Requirements:
AK4545 (@fs=48k)
A/D………………90dBA
D/A………………89dBA
A-A………………95dBA
• 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
• POP Function & DAC Feed Back Control
• EAPD(External Amplifier Powerdown) Support
• Power Supplies: Analog 5.0V, Digital 3.3V
• Low Power Consumption
215mW(Analog:5V/Digital:3.3V) at full operation
• 48 Pin LQFP Package
AK4545
* AKM assumes no responsibility for the usage beyond the conditions in this data sheet.
AC’ 97
™ Audio CODEC with SRC and DIT


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