AK5371AVQ AKM [Asahi Kasei Microsystems], AK5371AVQ Datasheet

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AK5371AVQ

Manufacturer Part Number
AK5371AVQ
Description
2ch A/D Converter with USB I/F
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AK5371AVQ
Manufacturer:
AKM
Quantity:
20 000
Part Number:
AK5371AVQP
Manufacturer:
MICRON
Quantity:
2 550
Part Number:
AK5371AVQP
Manufacturer:
AKM Semiconductor Inc
Quantity:
10 000
MS0546-E-00
Features:
USB-IF Certified
Incorporates USB Audio Controller
16 bit A/D Converter
Low Power Dissipation
Programmable Gain Amplifier (IPGA)
20dB Pre-amplifier
On-chip PLL
EEPROM I/F
Single Power Supply, Low Power
Package
ASAHI KASEI
MS0103-E-00
USB Serial Interface Engine
Audio Class Encoder/Decoder
2 Endpoints (FIFO)
USB transceiver
2 channels
Mute/Volume Control
A/D S/N: 84dBA (44.1kHz, Gain = 0dB)
Normal Operation: 26mA
Suspend Mode: < 1uA
+24dB to –31dB @1dB Step
5 Sampling Frequencies support
can customize Device Descriptor,
and String Descriptor
+3.3±0.3 Volts
48pin LQFP
22.05kHz, 44.1kHz, 48kHz
8kHz, 11.025kHz
AK5371A
General Description
AK5371A integrates USB serial interface engine, USB
transceiver, audio class processing unit, endpoints, and high
quality 2 channel AD converter into the chip.
sampling frequencies, 8kHz, 11.025kHz, 22.05kHz, 44.1kHz,
and 48kHz with only one crystal. Moreover, the AKAK5371A
integrates volume control, and mute function.
but also the current at suspend mode is less than 1μA.
addition to this, as the AK5371A also incorporates IPGA
which can amplify the microphone signal up to +24dB, total
gain is 44dB maximum.
Descriptor and String Descriptor. By connecting 1K bit, 2K
bit, or 4Kbit Microwire
customize Vendor ID, Product ID in Device Descriptor, and
String Descriptor.
conferencing but also games, voice recognition, and Karaoke.
Related Documents
For the detail of USB specification, and Audio Class, please
refer to the following documents.
Universal Serial Bus Specification Revision 1.1
Universal Serial Bus Device Class Definition for Audio
Devices, Revision 1.0
The AK5371A is stereo A/D converter with USB I/F. The
As the AK5371A incorporates PLL, it can support several
Not only power consumption at normal operation is very low,
The AK5371A includes 20dB fixed gain pre-amplifier. In
The AK5371A has EEPROM I/F for customizing Device
This device is good for not only business application such as
2ch A/D Converter with USB I/F
1
TM
type EEPROM, the AK5371A can
2007/02
[AK5371A]

Related parts for AK5371AVQ

AK5371AVQ Summary of contents

Page 1

ASAHI KASEI AK5371A Features: USB-IF Certified Incorporates USB Audio Controller USB Serial Interface Engine Audio Class Encoder/Decoder 2 Endpoints (FIFO) USB transceiver 16 bit A/D Converter 2 channels Mute/Volume Control A/D S/N: 84dBA (44.1kHz, Gain = 0dB) Low Power Dissipation ...

Page 2

... ASAHI KASEI Block Diagram VSS2 BIASSEL MICBIAS MICR 20dB - + AMPR1O AMPR2I - MICL + 20dB - + AMPL1O AMPL2I - + AMPL2O Ordering Guide AK5371AVQ 0 ∼ +70 °C AKD5371 Evaluation Board Pin Layout VD 1 VSS1 VSS2 NC TESTMODE3 5 XTALOUT XTALIN TESTMODE2 LFLT1 LFLT2 10 BIASSEL NC 15 MS0546-E-00 MS0103-E-00 VSS1 VSS3 VD ...

Page 3

ASAHI KASEI No. Signal Name I VSS1 P 3 VSS2 TESTMODE3 6 XTALOUT O 7 XTALIN 8 TESTMODE2 9 LFLT1 O 10 LFLT2 O 11 BIASSEL VCOM ...

Page 4

ASAHI KASEI No. Signal Name I VSS3 P 28 VREF TESTMODE1 TEST I EPAO ...

Page 5

ASAHI KASEI VSS1=VSS2=VSS3=0V Parameter Power Supplies Input Current (any pins except for supplies) Analog Input Voltage Digital Input Voltage Ambient Temperature Storage Temperature Note 1. All voltages with respect to ground. VSS1, VSS2 and VSS3 pin should be connected. Warning: ...

Page 6

ASAHI KASEI Ta=25°C,VA=VD=3.3V, Signal Frequency=1kHz, Sampling Frequency Fs=44.1kHz BW=20Hz – 20kHz, Test Mode; unless otherwise specified Parameter Stereo ADC (2 channel) Resolution S/N (A weight) ( AMPR2I/AMPL2I input) (IPGA are set to 0dB) S/(N+D) (-1dB analog input) (IPGA are set ...

Page 7

ASAHI KASEI Ta=0 - 70°C; VD=3.0 - 3.6V; VSS1=0V Measurement under static state All digital pins except DP, DN. Schmitt hysteresis level of RST pin and levels of all test pins will not be tested Parameter EPDI, EPEN, EPSEL, pin ...

Page 8

ASAHI KASEI VD”H” RST”H” PLL Clock Figure 2. Mode Change with respect to Bus States 2 (Bus transactions) Ta=25°C; VD=3.3V; VSS1=0V; CL=50pF Parameter Symbol Data Rate Output Impedance (Hi) Output Impedance (Lo) “H” level Output Voltage “L” level ...

Page 9

ASAHI KASEI Ta=25 ° C; VD=3.3V; VSS1=0V Parameter Symbol Common Mode Range Differential Input Sensitivity Schmitt High Level Voltage Schmitt Low Level Voltage DP, DN MS0546-E-00 MS0103-E-00 Receiver Characteristics Pins Conditions CMR DP, DN DIS DP, DN Vihs DP, DN ...

Page 10

ASAHI KASEI Overview of AK5371A The AK5371A is the advanced stereo A/D converter, which converts analog signal into USB audio class formats. As the AK5371A incorporates all functions to build USB Audio Input Device, the AK5371A doesn’t require additional micro-controller, ...

Page 11

ASAHI KASEI Descriptor Overview When the device is connected to USB bus, the host assigns specific address to the device. Then the host reads the device information, which is called as descriptor, through default pipe (Endpoint 0). The AK5371A consists ...

Page 12

ASAHI KASEI Audio Format of the AK5371A The AK5371A supports two audio formats: 16bit/mono and 16bit/stereo. This feature can avoid the unnecessary occupation of USB bandwidth. 16bit/mono is assigned to <Interlace 1, Alt1>, 16bit/stereo is assigned to <Interface 1, Alt2>. ...

Page 13

ASAHI KASEI EEPROM I/F The AK5371A has EEPROM I/F for customizing Device Descriptor, and String Descriptor. idVendor(2byte), idProduct(2byte), bcdDevice(2byte), iManufacturer(1byte), iProduct(1byte) in Device Descriptor and related String Descriptor can be customized. M icrowire type, 1K bit, 2K bit ...

Page 14

ASAHI KASEI System Block Diagram The following figure shows the system connection diagram. This is an example which uses external 1K bit EEPROM (AK93C45A) as Device and String Descriptor. If EEPROM is not used, EPEN pin should be tied to ...

Page 15

ASAHI KASEI AK5371A Descriptors Specification 1 Device descriptor Offset Field 0 bLength 1 bDescriptorType 2 bcdUSB 4 bDeviceClass 5 bDeviceSubClass 6 bDeviceProtocol 7 bMaxPacketSize0 8 idVendor 10 idProduct 12 bcdDevice 14 iManufacturer 15 iProduct 16 iSerialNumber 17 bNumConfigurations 2 Configuration ...

Page 16

ASAHI KASEI 3.2 Class-specific Audio Control Interface 3.3 Class-specific Audio Control Interface Header Descriptor 3.3.1 Contains general information about the audio device. Offset Field 0 bLength 1 bDescriptorType 2 bDescriptorSubtype 3 bcdADC 5 wTotalLength 7 bInCollection 8 baInterfaceNr(1) 3.3.2 Input ...

Page 17

ASAHI KASEI 3.4 Audio streaming interface 3.4.1 Zero bandwidth interface descriptor Offset Field 0 bLength 1 bDescriptorType 2 bInterfaceNumber 3 bAlternateSetting 4 bNumEndpoints 5 bInterfaceClass 6 bInterfaceSubclass 7 bInterfaceProtocol 8 iInterface 3.4.2 Interface descriptor(Alt = 1, 16bit Mono) Offset Field ...

Page 18

ASAHI KASEI 3.5 Endpoint descriptor 3.5.1 Standard Endpoint Descriptor Offset Field 0 bLength 1 bDescriptorType 2 bendpointAddress 3 bmAttributes 4 wMaxPacketSize 6 wInterval 7 bRefresh 8 bSynchAddress 3.5.2 Class-specific isochronous audio data endpoint descriptor Offset Field 0 bLength 1 bDescriptorType ...

Page 19

ASAHI KASEI 3.5.3 Interface descriptor (Alt = 2, 16bit Stereo) Offset Field 0 bLength 1 bDescriptorType 2 bInterfaceNumber 3 bAlternateSetting 4 bNumEndpoints 5 bInterfaceClass 6 bInterfaceSubclass 7 bInterfaceProtocol 8 iInterface 3.5.4 Class-specific audio streaming interface descriptor Offset Field 0 bLength ...

Page 20

ASAHI KASEI 3.6 Endpoint descriptor 3.6.1 Standard Endpoint Descriptor Offset Field 0 bLength 1 bDescriptorType 2 bendpointAddress 3 bmAttributes 4 wMaxPacketSize 6 wInterval 7 bRefresh 8 bSynchAddress 3.6.2 Class-specific isochronous audio data endpoint descriptor Offset Field 0 bLength 1 bDescriptorType ...

Page 21

ASAHI KASEI 3.7 String descriptor 1 String descriptors use UNICODE. except for LANGID. 3.7.1 LANGID (0x00) Field Offset Field 0 bLength 1 bDescriptorType 2 bString 3.7.2 iManufacterer (0x01) Field in Device Descriptor Offset Field 0 bLength 1 bdescriptorType 2 bString ...

Page 22

ASAHI KASEI 3.7.3 iProduct (0x02) Field in Device Descriptor Offset Field 0 bLength 1 bDescriptorType 2 bString MS0546-E-00 MS0103-E-00 Size Value Description 1 0x34 Length of this descriptor 1 0x03 STRING descriptor 50 0x0041 “AK5371 0x004B 0x0035 0x0033 0x0037 0x0031 ...

Page 23

ASAHI KASEI 4 Standard requests 4.1 Clear Feature The AK5371A accepts “Clear Feature” request without stall. Though this request does not influence to the operation of the device, the AK5371A does not support this request. 4.2 Get Configuration The AK5371A ...

Page 24

ASAHI KASEI 4.5 Get Status Offset Field Size 0 bmRequestType 1 1 bRequest 1 2 wValue 2 4 wIndex 2 6 wLength 2 The AKM USB MIC returns the following status. Device : 0x0000( AKM USB MIC is bus-powered device) ...

Page 25

ASAHI KASEI 4.8 Set Feature The AK5371A accepts “Set Feature” request without stall. However note that the AK5371A does not support this request. 4.9 Set Interface Audio format can be changed by the combination of Interface Number and Alternate Setting. ...

Page 26

ASAHI KASEI 5 Device specific Requests AKM USB Microphone supports ONLY SET_CUR as bRequest field in Set Request Values. 5.1 Audio Control Request AKM USB microphone support ONLY Feature Unit Control Request, not support other requests. Addition to this, it ...

Page 27

ASAHI KASEI 5.1.2 Get Feature Unit Control Request AKM USB Microphone supports only one form of parameter block. a) Mute Control Offset Field Size 0 bmRequestType 1 1 bRequest 1 2 wValue 2 4 wIndex 2 6 wLength 2 The ...

Page 28

ASAHI KASEI Field wVolume 0x7FFF -------- 0x1800 0x17FF --------- 0x1701 0x1700 0x16FF --------- 0x1201 0x1200 --------- --------- 0x02FF --------- 0x0201 0x0200 0x01FF --------- 0x0101 0x0100 0x00FF --------- 0x0001 0x0000 0xFFFF -------- 0xFF01 0xFF00 0xFEFF -------- 0xFE01 0xFE00 --------- --------- 0xE200 ...

Page 29

ASAHI KASEI 5.2 Endpoint Control Request The AK5371A supports five sampling frequencies. The sampling rate is changed when “Set Endpoint Control Request ” is issued. SET_CUR, GET_CUR of bRequest is only supported. GET_MIN, GET_ MAX, and GET_RES of bRequest are ...

Page 30

... ASAHI KASEI 48pin LQFP(Unit:mm 0.5 MS0546-E-00 MS0103-E-00 Package (AK5371AVQ) 9.0 ± 0.2 7 0.19 ± 0.05 0.10 M 0° ∼ 10° 0.5 ± 0.2 0.10 30 1.70Max 0.10 ± 0.07 1.4TYP 0.17 ± 0.05 2007/02 [AK5371A] ...

Page 31

... ASAHI KASEI MS0546-E-00 MS0103-E-00 Marking (AK5371AVQ) AK5371AVQ XXXXXXX 1 1) Pin #1 indication 2) Date Code: XXXXXXX (7 digits) 3) Marking Code: AK5371AVQ 4) Asahi Kasei Logo 31 [AK5371A] 2007/02 ...

Page 32

ASAHI KASEI • These products and their specifications are subject to change without notice. considering any use or application, consult the Asahi Kasei Microsystems Co., Ltd. (AKM) sales office or authorized distributor concerning their current status. • AKM assumes no ...

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