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Audio CODEC. AK4571 Datasheet

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Audio CODEC. AK4571 Datasheet
















AK4571 CODEC. Datasheet pdf. Equivalent













Part

AK4571

Description

USB Interface Audio CODEC



Feature


ASAHI KASEI [AK4571] AK4571 USB Inter face Audio CODEC Features: „ USB Audi o Controller 12 Mbps bit rate USB Seria l Interface Engine (SIE) Audio Class Pr ocessing Block 4 Endpoints USB transcei ver „ 16bit CODEC - Single-channel A/D Converter Microphone Pre-Amp (Fixed Ga in: 20dB) Mute/Volume Control Programma ble Gain Control +24dB to –31dB ( 1dB step ) - D/A Converte.
Manufacture

Asahi Kasei Microsystems

Datasheet
Download AK4571 Datasheet


Asahi Kasei Microsystems AK4571

AK4571; r 2 channels - Mixer Mute/Attenuation Co ntrol +0dB to –47dB ( 1dB step ) Anal og Bass Boost „ HID Support - remote c ontrol of playback volume/mute - record ing mute/status function „ Power Manag ement - control of external headphone a mplifier - low power at suspend mode (< 1uA) „ EEPROM Interface (Microwire In terface) - can read Device/String Descr iptor from EEPROM - 1K/.


Asahi Kasei Microsystems AK4571

2K/4K bit EEPROM „ On-chip PLL 7 sampli ng frequencies: 8kHz, 11.025kHz, 16kHz, 22.05kHz, 32kHz, 44.1kHz, 48kHz „ Sin gle Power Supply, Low Power +3.3Volts± 0.3V „ Package 48pin LQFP General Des cription: The AK4571 is a USB Interface audio CODEC. Th .


Asahi Kasei Microsystems AK4571

.





Part

AK4571

Description

USB Interface Audio CODEC



Feature


ASAHI KASEI [AK4571] AK4571 USB Inter face Audio CODEC Features: „ USB Audi o Controller 12 Mbps bit rate USB Seria l Interface Engine (SIE) Audio Class Pr ocessing Block 4 Endpoints USB transcei ver „ 16bit CODEC - Single-channel A/D Converter Microphone Pre-Amp (Fixed Ga in: 20dB) Mute/Volume Control Programma ble Gain Control +24dB to –31dB ( 1dB step ) - D/A Converte.
Manufacture

Asahi Kasei Microsystems

Datasheet
Download AK4571 Datasheet




 AK4571
ASAHI KASEI
[AK4571]
AK4571
USB Interface Audio CODEC
Features:
„ USB Audio Controller
12 Mbps bit rate
USB Serial Interface Engine (SIE)
Audio Class Processing Block
4 Endpoints
USB transceiver
„ 16bit CODEC
- Single-channel A/D Converter
Microphone Pre-Amp (Fixed Gain: 20dB)
Mute/Volume Control
Programmable Gain Control
+24dB to –31dB ( 1dB step )
- D/A Converter
2 channels
- Mixer
Mute/Attenuation Control
+0dB to –47dB ( 1dB step )
Analog Bass Boost
„ HID Support
- remote control of playback volume/mute
- recording mute/status function
„ Power Management
- control of external headphone amplifier
- low power at suspend mode (< 1uA)
„ EEPROM Interface (Microwire Interface)
- can read Device/String Descriptor from EEPROM
- 1K/2K/4K bit EEPROM
„ On-chip PLL
7 sampling frequencies:
8kHz, 11.025kHz, 16kHz, 22.05kHz, 32kHz,
44.1kHz, 48kHz
„ Single Power Supply, Low Power
+3.3Volts±0.3V
„ Package
48pin LQFP
General Description:
The AK4571 is a USB Interface audio CODEC. The AK4571
incorporates a 16-bit CODEC, PLLs, USB transceiver, SIE (serial
interface engine), audio class processing unit, FIFO and other
required signals into a single chip. The AK4571 can
simultaneously transmit and receive audio stream data through
USB bus. In addition to this, the single-channel ADC and 2-
channel DAC can operate at different sampling rates.
The AK4571 has a programmable gain amplifier for analog input
(IPGA). The gain range is from –31dB to +24dB with 1dB steps. In
addition to the IPGA, the AK4571 also has a fixed +20dB
pre-amplifier. Analog input signals can be mixed directly with the
D/A signal and sent to the LINEOUT pins of the chip.
The analog outputs of the AK4571 can be attenuated up to
–47dB in 1dB steps. The AK4571 also has an analog bass boost
circuit. Bass Boost response can be modified by changing the
values of external resistors and capacitors.
The AK4571 has a Human Interface Device function that allows a
user to control the playback volume at the device side. The
playback volume on mixer applet moves up or down automatically
by the operation of HID buttons. The AK4571 also can mute
analog input signal locally in addition to mixer applet control.
The AK4571 has advanced power management capabilities.
Suspend current is less than 1uA. The AK4571 can also control
the power of an external headphone amplifier to conform to the
USB suspend current requirement of 500uA maximum.
The AK4571 has a Microwire interface for an external
EEPROM, allowing customization of Vendor ID and product ID.
The high integration of the AK4571 reduces both the number of
external components required and the PCB area required to build
USB devices, including small format products such as USB
headsets.
MS0153-E-03
-1-
2005/06




 AK4571
ASAHI KASEI
[AK4571]
Block Diagram
VA AGND BGND DGND VD VCOM VRAD VRDA MSTAT IMUTE OMUTE DEC INC CS EPDO EPAI SK EPEN
MICBIAS
VREF
STBY
EPSW
EMSW
RBFO
RBFI
ROUT
Bass
M Boost
Power
Management
Master
volume
ATT
Mixer
Σ
LOUT
Bass
M Boost
LBFI
LBFO
ATT
Σ
GAIN M
EEPROM I/F
Config
ROM
String
ROM
EPSEL
DAC
DAC
FIFO
FIFO
Audio
Control
Block
USB
Serial
Interface
Engine
USB
Transceiver
DP
DN
ADC
FIFO
MICIN
20dB
AMP1O
GAIN M
PLL
AMP2I
AMP2O LFLT_44K LFLT_48K LFLT_SYS XPTLLLI1N
XTLOUT RSTN
CRYSTAL
MS0153-E-03
-2-
2005/06




 AK4571
ASAHI KASEI
AK4571VQ
AKD4571
Ordering Guide
0 +70°C
48pinLQFP(0.5mm pitch)
Evaluation Board for AK4571
Pin Layout
[AK4571]
VD
DGND
BGND
XTALOUT
XTALIN
EPSW
STBY
EMSW
LFLT_SYS
LFLT_44K
LFLT_48K
VCOM
1 45
5
10
15
40
20
EPSEL
35 EPEN
EPDI
EPAO
SK
CS
30 TESTMODE3
TESTMODE2
VRDA
VRAD
AGND
25 VA
MS0153-E-03
-3-
2005/06




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