AK5370 Converter Incorporates Audio Controller Serial Interf

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

AK5370 Converter Incorporates Audio Controller Serial Interf

Datasheet Thumbnail

Top Searches for this datasheet

ASAHI KASEI [AK5370]
AK5370
Converter
Incorporates Audio Controller Serial Interface Engine Audio Class Encoder/Decoder Endpoints (FIFO) transceiver Converter channel Mute/Volume Control external control S/N: 84dBA (44.1kHz, Gain 0dB) On-chip Sampling Frequencies support 8kHz, 11.025kHz 22.05kHz, 44.1kHz, 48kHz Programmable Gain Amplifier +20dB -58dB Single Power Supply, Power +3.3Volts±10% Package 24pin VSOP
General Description AK5370 converter audio, especially microphone AK5370 integrates serial interface engine, transceiver, audio class decoder, endpoints, high quality converter into chip. AK5370 incorporates PLL, support several sampling frequencies, 8kHz, 11.025kHz, 22.05kHz, 44.1kHz, 48kHz with only crystal. Moreover, AK5370 integrates volume control, mute function. possible make microphone with external components This device good only business application such conferencing also games voice recognition, Karaoke. Related Documents detail specification, Audio Class, please refer following documents. Universal Serial Specification Revision Universal Serial Device Class Definition Audio Devices, Revision
VCOM
AGND AGCEN
DGND
String MIC_BIAS Common Voltage Mute Volume control Audio Class Decoder Audio Class Encoder EndPoint1 IN_FIFO
adCLK
ConfigROM
Power Management
EndPoint0 OUT_FIFO EndPoint0 IN_FIFO
Serial Interface Engine
Testmode1,2 System TEST1,2,3
MIC_IN
16bit
AMP1O AMP2I AMP2O XTLIN
LFLT2 CRYSTAL
Transceiver XTLOUT
VREF
LFLT1
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Pin/Function Signal Name DGND Description Digital Ground Digital Power Supply, 3.3V Non-Inverting pin. Because AK5370 full speed mode device, 1.5k resistor will connected between node Inverting Pin. Please down AGND normal operation. Crystal Oscillator Output, Connect Crystal Resonator Crystal Oscillator Input, Connect Crystal Resonator Please down AGND normal operation. System clock loop filter Pin. Connect resistor 6800pF capacitor series externally. adPLL loop filter Pin. Connect resistor 8200pF capacitor series externally. Analog Common Voltage Reference Microphone Input Amplifier Output Amplifier Input Analog Power Supply, 3.3V Analog Ground Common Voltage Reference Pin. Amplifier Output Please down AGND normal oper ation. Voltage Reference Output Microphones bias voltage When this chip goes into Suspend mode, this goes Please down AGND normal operation. Enable Control Input Pin. When external used, High level should applied this pin. When input applied, configuration data FALSE. Then output Low. Control When host requests AGC_CONTROL request, this goes level AGCE input prevents this AGC_CONTROL request. level output SUSPEND. Default output Reset Low. Reset Pin, input makes chip reset sate. Schmitt Trigger input.
TESTMODE3 XTALOUT XTALIN TESTMODE2 LFLT2 LFLT1 VCOM MICIN AMP1O AMP2I AGND VREF AMP2O TESTMODE1 MICBIAS TEST AGCE
RSTN
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Absolute Maximum Rating AGND, DGND=0V Parameter Power Supplies Symbol VINA VIND Tstg -0.3 -0.3 -0.3 -0.3 VA+0.3 VD+0.3 Units
Analog Digital |DGND-AGND| Input Current (any pins except supplies) Analog Input Voltage Digital Input Voltage Ambient Temperature Storage Temperature Note voltages with respect ground
Warning: Operation beyond these limits results permanent damage device. guaranteed these extremes. Recommended Operating Condition AGND, DGND=0V Parameter Power Supplies voltages with respect grou Symbol Analog Digital
ormal operation
Units
assumes responsibility usage beyond condition this datasheet.
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Analog Characteristics Ta=25°C, VA=VD=3.3V, Signal Frequency=1kHz, Sampling Frequency Fs=44.1kHz Parameter Mono channel) Resolution weight) (1st amplifier 0dB) S/(N+D) (-0.5dB analog input) (1st amplifier 0dB) Amplifier (2nd Stage) <IPGA> Characteristics Input Voltage Gain Control Range Step Size Input Impedance @AMP2I amplifier(1st Stage) Gain range(defined external resistors) External Feedback Impedance Bias 0.9VA Output Voltage when 4.7K resistor connected Output Impedance Output Current Power Supplies Analog 10.5 Digital Total Power Down(Suspend Mode)
Units bits
Vp-p
(Ta=25°C =3.0 44.1 kHz) Parameter Symbol Digital Filter (Decimation LPF) Passband Stopband Passband Ripple Stopband Attenuation Group Delay A/Ddigital Filter (HPF) Frequency Response -0.5 -0.1
FILTER CHARACTERISTICS
Units
26.5
17.64 6.85 19.2 44.9
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Digital Characteristics Ta=0 70°C; VD=3.0 3.6V; DGND=0V Measurement under static state digital pins except Schmitt hysteresis level levels test pins will tested. Parameter Symbol Units AGCE level input voltage 70%VA AGCE level input voltage 30%VA RSTN level voltage VIHR RSTN level voltage VILR level output voltage IOH= level output voltage IOL= -2mA Input Leakage Current
Switching Characteristics Ta=25°C, VA=VD=3.3V Parameter Master Clock Frequency Reset input width @RSTN pin(low active) Singe Ended Receiver Threshold Symbol MCLK Wrst 11.2896 Units
Main Clock Stable Time Tostb Vse(max) stabilized MCLK Xtal oscillator start lock Reset Signal Recognition Trst_rec Both Vse(min) Reset mode Tdrr Device Ready Ready transaction after reset Suspend Recognition Tsus_rec Idle state Vse(max) Vse(min) Suspend mode Resume Time Tresm First flip D+/D- from Idle sate Device Ready*) Device Ready: VREF, Xtal oscillator, stable trans action with normal rate ready.
Master Clock Device Connected Tostb Reset Mode Trst_rec
Tdrr Reset Mode
Figure
Mode change with respect States (Power device connected)
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Tsus_rec
DRSTH Master Clock Tresm
Figure
Mode Change with respect States (Bus transactions)
Transmitter Characteristics Ta=25°C; VD=3.3V; DGND=0V; CL=50pF Parameter Symbol Data Rate Output Impedance (Hi) Output Impedance (Lo) level Output Voltage level Output Voltage Tri-state Leakage Current Rise/Fall Time Rise/Fall Time Matching Crossover Point Vohd Vold Iolk Trf/Tff Trfm Vcrs Pins DP,DN Conditions DN=H DN=L IOH=-200uA IOH=2.2mA 3.3V 11.97 12.03 Units
90%VDD 10%VDD
Figure
Rise/Fall Time
Vcrs
Figure
Crossover Point
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Receiver Characteristics Ta=25°C; VD=3.3V; DGND=0V Parameter Symbol Schmitt High Level Voltage Vihs Schmitt Level Voltage Vils Pins Conditions Units
Vihs Vils
Figure
Schmitt Level Voltage
MS0027-E-00 2000/05
ASAHI KASEI [AK5370] Overview AK5370 AK5370 advanced converter, which converts analog signal condenser microphone into audio class formats. device suitable microphone. AK5370 includes following blocks: converter Pre-Amplifier with variable gain/attenuation Serial Interface Engine Control block Audio Device Class Support Mute, Gain/Attenuation, Sampling Frequency Control, (only decode request) transceiver AK4170 compliant FIFO memory synchronization Memory Size (16bit wide depth) Synchronize Audio Stream data with This
AK5370 supports sampling frequencies (8kHz, 11.025kHz, 22.05kHz, 44.1kHz, 48kHz) mute control, volume control Feature Unit Audio Device Class. addition this, AK5370 decodes request, puts level external pin, pin, easy implement with external circuit. order support these frequencies, AK5370 incorporates PLL. addition this, AK5370 consumes power, possible operate bus-powered device. Class Descriptor Overview peripheral usually belongs group, "Class". AK5370 belongs Audio Device Class. Class consists four Descriptors, Device Descriptor, Configuration Descriptor, Interface Descriptor, Endpoint Descriptor. AK5370 Audio Specific Interface Descriptor Endpoint Descriptor. Device Descriptor Device Descriptor describes product information; product name, manufacturer, etc. addition this, Device Descriptor Endpoint0 fifo-buffer size. enumeration phase, host reads bytes from Device Descriptor first. host knows reading bMaxPacketSize0 Device Descriptor, uses this value following transactions, does send bigger data once. Configuration Descriptor Configuration Descriptor informs host number Interface, Bus-powered/Self-Powered device, etc. This descriptor same Standard Interface Descriptor. Interface Descriptor There Interfaces Audio Class; Audio Control (AC) Interface, Audio Streaming (AS) Interface. Each Audio Interface includes Standard Interface Descriptor Class-Specific Interface. Standard Interface Descriptor describes interface's class. Class-Specific Interface Descriptor concatenation descriptors that used fully describe audio function. AK5370 three logical audio functions; Input Terminal, Output Terminal, Feature Unit (mute, volume, AGC), each terminal unit their Descriptor. only each descriptor their information, also connection information between blocks. example, bSourceID field Output Terminal Descriptor 0x03, which Feature Unit. This means that Feature Unit connected Output Terminal. Standard Interface interface class name (AUDIO) sub-class name (AUDIO_STREAMING), related Endpoint number, etc. Class-Specific Interface Descriptor mainly shows Audio Data Format information that follows Descriptor. There note Alternate Setting: Alternate setting zero-bandwidth setting, used relinquish claimed bandwidth when microphone use. default setting after power-up. zero bandwidth implemented specifying that this alternate setting interface endpoints associated with (bNumEndpoints=0).
Endpoint Descriptor
MS0027-E-00 2000/05
ASAHI KASEI [AK5370] Endpoint Descriptor pipe data. AK5370 Endpoints. Endpoint0 Control Transfer. Another Endpoint whose direction used Isochronous Transfer. Standard Isochronous Endpoint tells Endpoint type like In/OUT, maximum packet size, synchronization type, etc. host. Main information Class-Specific Endpoint Descriptor sampling frequency.
Figure shows Descriptor's hierarchy.
Device
Device Descriptor
Configuration
Configuration Descriptor
Standard Audio Control Interface Descriptor
Standard Interface Descriptor Alt. Setting
Interface
Class-Specific Audio Control Interface Descriptor Standard Interface Descriptor Alt. Setting
Class-Specific Audio Streaming Interface Descriptor
Class-Specific Format Type Descriptor
Standard Isochronous Endpoint Descriptor
Endpoint (IN)
Class-Specific Descriptor Class-Specific Isochronous Endpoint Descriptor
StandardInterface Descriptor
Figure
Descriptor Hierarchy
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Synchronization AK5370 operates Asynchronous Device. converter AK5370 operates asynchronously with timing. data from converter sent continuously buffer memory while data burstly transferred interval USB. order control difference timing, AK5370 FIFO memory with capacity 2-frame depth .The average sampling rate calculating from frame should accordance with sampling rate (fs). following figure shows example. When sampling frequency 44.1kHz, number data almost samples frame. AK5370 must send samples once times. Please Figure
Frame
(N+1) Frame
(N+9) Frame
(N+10) Frame
samples
samples
samples
samples
Figure
Synchronization
data sampled converter Frame output somewhere (N+1) frame issuing transfer. Power Management Control normal operation, MICBIAS outputs voltage supply microphone's bias voltage. When idle state continues 3ms, AK5370 goes suspend state forces block other unnecessary block power-down mode. MICBIAS does supply bias voltage save power consumption open state under suspend state. device resumes normal operation within 30ms after device receives resume signal Feature Unit Control Frequency Control AK5370 three feature unit function; mute, volume, AGC. host issues "SET_FEATURE_UNIT_CONTROL" request change volume, status mute AGC. AK5370 responds request value only, respond MIN, MAX, value. Note that AK5370 doesn't have circuit itself that decodes request only. host CUR/MAX/MIN/RES value volume requesting "GET_FEATURE_CONTROL". value supported mute AGC. However, only
Volume Control Format Audio Class 16-bit integer, upper-bye integer (-127 127), lower-bye fraction. AK5370 follows conversion table described Table page volume control request When AK5370 receives "SET_ENDPOINT_CONTROL" request, changes sampling frequency(fs). supported, device forces appropriate which supports. host issuing "GET_ENDPOINT_CONTROL" request.
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
AK5370 Descriptors Specification
Product description
This device channel 16-bit with monaural microphone, operates device.
Descriptor structure
This device includes configuration, interfaces, which audio control interface audio streaming interface endpoints, which endpoint default pipe, endpoint audio streaming. descriptor partly fixed partly programmable means selectable test map. programmable descriptors marked with star.
Device descriptor
Offset Field bLength bDescriptorType bcdUSB bDeviceClass bDeviceSubClass bDeviceProtocol bMaxPacketSize0 idVendor idProduct bcdDevice iManufacturer iProduct iSerialNumber bNumConfigurations Size Value 0x12 0x01 0x0110 0x00 0x00 0x00 0x08 0x0556 0x0001 0x0001 0x01 0x02 0x00 0x01 Description Size this descriptor bytes DEVICE descriptor 1.10 current revision spec. Device defined Interface level Unused Unused bytes AKMs Vendor means Audio Product, AKMproduct Device release code AK5370 Unused configuration
Configuration block
Configuration descriptor
Offset Field bLength bDescriptorType wTotalLength bNumInterfaces bConfigurationValue iConfiguration bmAttributes MaxPower
configuration block consists confi guration descriptor followed interface, endpoint, class-specific descriptors.
Size
Value 0x09 0x02 0x0076 0x02 0x01 0x00 0x80 0x2D
Description Size this descriptor CONFIGURATION descriptor Length entire configuration block Total bytes including this interface descriptor. interfaces Index this configuration Null string Powered Device Power consumption:90mA
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Audio control interface
audio control interface describes device structure used manipulate audio controls.
4.2.1 Interface descriptor
This descriptor describes standard interface which includes class code index class-specific information. Offset Field Size Value Description bLength 0x09 Size this descriptor bDescriptorType 0x04 INTERFACE descriptor bInterfaceNumber 0x00 Index this interface bAlternateSetting 0x00 Index this setting bNumEndpoints 0x00 Endpoint bInterfaceClass 0x01 AUDIO bInterfaceSubclass 0x01 AUDIO_CONTROL bInterfaceProtocol 0x00 Unused iInterface 0x00 null string
4.2.2 Class-specific interface header descriptor
Contains general information about audio device. Offset Field Size Value bLength 0x09 bDescriptorType 0x24 bDescriptorSubtype 0x01 bcdADC 0x0100 wTotalLength 0x0026 bInCollection baInterfaceNr(1) 0x01 0x01 Description Size this descriptor CS_INTERFACE HEADER subtype Revision class specification Total size class-specific Audio Control Interface descriptors (includes this descriptor) Number streaming interfaces Streaming interface number belongs this audio control interface.
4.2.3 Input terminal descriptor
This descriptor describes signal coming through input port NumChannels 1(monaural) ChannelConfig position. Terminal type Microphone. Offset Field Size Value Description bLength 0x0C Size this descriptor bDescriptorType 0x24 CS_INTERFACE bDescriptorSubtype 0x02 INPUT_TERMINAL subtype bTerminalID 0x01 this terminal wTerminalType 0x0201 Terminal Microphone bAssocTerminal 0x02 associated Output Terminal 0x02 bNrChannels 0x01 channel (Monaural) wChannelConfig 0x0000 Mono sets position bits iChannelNames 0x00 Unused iTerminal 0x00 Unused
4.2.4 Output terminal descriptor
This descriptor describes stream host. Offset Field Size Value bLength 0x09 bDescriptorType 0x24 bDescriptorSubtype 0x03 bTerminalID 0x02 wTerminalType 0x0101 bAssocTerminal 0x01 bSourceID 0x03 iTerminal 0x00 MS0027-E-00
Description Size this descriptor CS_INTERFACE OUTPUT_TERMINAL subtype this terminal Streamer associate Input Terminal 0x01 From Feature Unit Unused
2000/05
ASAHI KASEI [AK5370]
4.2.5 Feature Unit descriptor
This descriptor describes Control, Volume Control Automatic Gain Control(AGC) Offset Field Size Value Description bLength 0x08 Size this descriptor bDescriptorType 0x24 CS_INTERFACE bDescriptorSubtype 0x06 FEATURE_UNIT descriptor subtype bUnitID 0x03 this feature Unit bSourceID 0x01 Terminal which this connected. bControlSize 0x01 Size bytes element bmaControl() bmaControls(0) 0x43* D0(Mute), D1(Volume) D6(AGC) enable iFeature 0x00 Unused When level applied AGCE pin, bmaControl data modified 0x03 state enable. Note that there never endpoint descriptor endpoint
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Audio streaming interface
4.3.1 Zero bandwidth interface descriptor
Offset Field bLength bDescriptorType bInterfaceNumber bAlternateSetting bNumEndpoints bInterfaceClass bInterfaceSubclass bInterfaceProtocol iInterface Size Value 0x09 0x04 0x01 0x00 0x00 0x01 0x02 0x00 0x00 Description Length this descriptor INTERFACE descriptor Index this interface Index this setting Endpoints AUDIO AUDIO_STREAMING Unused null string
4.3.2 Interface descriptor
Offset Field bLength bDescriptorType bInterfaceNumber bAlternateSetting bNumEndpoints bInterfaceClass bInterfaceSubclass bInterfaceProtocol iInterface Size Value 0x09 0x04 0x01 0x01 0x01 0x01 0x02 0x00 0x00 Description Length this descriptor INTERFACE descriptor Index this interface Index this setting Endpoint AUDIO AUDIO_STREAMING Unused null string
4.3.3 Class-specific audio streaming interface descriptor
Offset Field bLength bDescriptorType bDescriptorSubtype bTerminalLink bDelay wFormatTag Size Value 0x07 0x24 0x01 0x02 0x01 0x0001 Description Length this descriptor CS_INTERFACE descriptor AS_GENERAL Unit terminal(Output Terminal Interface delay
4.3.4 Type format type descriptor
Offset Field blength bDescriptorType bdescriptorSubtype bformatType bNrChannels bSubFrameSize bBitResolution bSamFreqType tSamFreq[0] tSamFreq[1] tSamFreq[2] tSamFreq[3] tSamFreq[4] Size Value 0x17 0x24 0x02 0x01 0x01 0x02 0x10 0x05 0x001F40 0x002B11 0x005622 0x00AC44 0x00BB80 Description Size this descriptor CS_INTERFACE FORMAT_TYPE FORMAT_TYPE_I channel bytes slot bits Five frequencies 8000Hz 11025Hz 22050Hz 44100Hz 48000Hz
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Endpoint descriptor
4.4.1 Standard Endpoint Descriptor
Offset Field bLength bDescriptorType bendpointAddress bmAttributes wMaxPacketSize wInterval Size Value 0x07 0x05 0x81 0x01 0x0064 0x01 Description Length this descriptor ENDPOINT descriptor Endpoint direction Isochronous, asynchronous, shared 2byte*50sample*1ch=100 byte/frame packet every frame (Must
4.4.2 Class-specific isochronous audio data endpoint descriptor
Offset Field bLength bDescriptorType bDescriptorSubtype bmAttributes bLockDelayUnits wLockDelay Size Value 0x07 0x25 0x01 0x01 0x00 0x0000 Description Size this descriptor CS_ENDPOINT GENERAL Sample rate control Unused
String descriptor
String descriptors UNICODE. except LANGI
4.5.1 LANGID (0x00) Field
Offset Field bLength bDescriptorType bString Size Value 0x04 0x03 0x0409 Description Length this descriptor STRING descriptor English(US)
4.5.2.1 iManufacterer (0x01) Field Device Descriptor
Offset Field bLength bdescriptorType bString Size Value 0x022 0x03 0x0041 0x004B 0x004D 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 Description Length this descriptor STRING descriptor
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
4.5.3.1iProduct (0x02) Field Device Descriptor
Offset Field bLength bDescriptorType bString Size Value 0x22 0x03 0x0041 0x004B 0x0035 0x0033 0x0037 0x0030 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 0x0020 Description Length this descriptor STRING descriptor AK5370
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Standard requests
Clear Feature
AK5370 accepts Clear Feature request without stall. Though this request does influence operation device, AK5370 does support this request.
Configuration
Microphone should return value, one, host. Field Size Value Description Offset bmRequestType 0x80 bRequest 0x08 GET_CONFIGURATION wValue 0x0000 wIndex 0x0000 wLength 0x0001 Mic. configuration.
Descriptor
Offset Field bmRequestType bRequest wValue Size Value 0x80 0x06 0xZZZZ Description GET_DESCRIPTOR ZZZZ assigned host: High Byte Descriptor Type, Byte Index. DEVICE 0x0100 (Index only) CONFIGURATION 0x0200 STRING: 0x03??(?? wValue DEVICE CONFIGURATION, wIndex zero. wValue 0x0300(LANGID), wIndex zero. wValue 0x0301 0x0302, wIndex 0x0409. Descriptor Length (ZZZZ assigned host)
wIndex wLength
0x0000 0xZZZZ
Interface
Microphone alternate Audio Streaming Interface, ;zero bandwidth, normal. device returns current selected bAlternateSetting alue, 0x00(zero bandwidth Audio Streaming Interface) 0x01(normal Audio Streaming Interface). wIndex (Audio Control Interface), device returns value, 0x00. Offset Field Size Value Description bmRequestType 0x81 bRequest 0x0A GET_INTERFACE wValue 0x0000 ZERO wIndex 0x0000 Audio Control Interface 0x0001 Audio Streaming Interface wLength 0x0001 Mic. zero bandwidth Audio Streaming Interface normal Audio Streaming Interface.
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Status
Offset Field bmRequestType bRequest wValue wIndex wLength Size Value 0x80 0x81 0x82 0x00 0x0000 0x0002 Description DEVICE INTERFACE ENDPOINT GET_STATUS ZERO
returns following status. a)Device 0x00 bus-powered device) b)Interface: 0x00 (All Zero) c)Endpoint 0x00
Address
stores wValue internal memory Device Address. addition this, device returns ACK. Offset Field Size Value Description bmRequestType 0x00 Zero bRequest 0x05 SET_ADDRESS wValue 0xZZZZ Device Address ZZZZ assigned host wIndex 0x0000 Zero wLength 0x0000 Zero
Configuration
placed configured state only wValue this request 0x00 addition this, device returns ACK. Offset Field Size Value Description bmRequestType 0x00 Zero bRequest 0x09 SET_CONFIGURATION wValue 0x0000 Unconfigured State 0x0001 configured state others Unconfigured State wIndex 0x0000 Zero wLength 0x0000 Zero
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Feature
AK5370 accepts Feature request without stall. However note that AK5370 does support this request.
Interface
This request selects alternate setting interface control bandwidth allocation. Only 0x0000 selected wIndex 0x0000 (Audio Control Interface) current Interface. Offset Field Size Value Description bmRequestType 0x01 Host device D6.5 Standard request D4.0 Recipient interface bRequest 0x0B SET_INTERFACE wValue Alternate Setting 0x0000 Control Interface Zero Bandwidth 0x0001 Streaming Interface Normal Streaming wIndex 0x0000 Audio Control Interface 0x0001 Audio Streaming Interface wLength 0x0000 Zero
5.10 Synch Frame
Microphone does support this request pipe stalled.
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Device specific requests
Microphone supports ONLY SET_CUR bRequest field Request Values.
Audio Control Request
microphone support ONLY Feature Unit Control Request, support other requests. Addition this, only supports SET_CUR value bRequest field Feature Unit Control Request Values. Audio Control Requests applied channel which means master channel.
6.1.1 Feature Unit Control Request
Microphone supports only form parameter block. Mute Control Offset Field Size Value Description bmRequestType 0x21 bRequest 0x01 SET_CUR wValue 0x0100 MUTE_CONTROL CHANNEL_ wIndex 0x0300 Upper Byte bUnit field Feature Unit Descriptor.(0x03) Lower Byte Audio Control Interface(0x00) wLength 0x0001 Length Mute Control Parameter Block parameter block control following. Offset Field Size Value Description bMute 0x01 TRUE 0x00 FALSE Volume Control Offset Field bmRequestType bRequest wValue wIndex wLength
Size
Value 0x21 0x01 0x0200 0x0300 0x0002
Description SET_CUR VOLUME_CONTROL CHANNEL_ Upper Byte bUnit field Feature Unit Descriptor.(0x03) Lower Byte Audio Control Interface(0x00) Volume Control
parameter block mute control following. Offset Field Size Value Description wVolume 0xZZZZ value mapped volume register value. (refer Figure conversion table ZZZZ assigned host wVolume exceeds range, AK5370 forces value into range. Please conversion table Feature Unit Control Request. Automatic Gain Control Offset Field bmRequestType bRequest wValue wIndex wLength Size Value 0x21 0x01 0x0700 0x0300 0x0001 Description SET_CUR AUTOMATIC_GAIN_CONTROL CHANNEL_0 Upper Byte bUnit field Feature Unit Descriptor.(0x03) Lower Byte Audio Control Interface(0x00) Length Mute Control Parameter Block
parameter block mute control following. Offset Field Size Value Description bAGC 0x01 TRUE (AGC 0x00 FALSE (AGC Default) MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
6.1.2 Feature Unit Control Request
Microphone supports only form parameter block. Mute Control Offset Field Size Value Description bmRequestType 0xA1 bRequest 0x81 GET_CUR wValue 0x0100 MUTE_CONTROL CHANNEL_ wIndex 0x0300 Upper Byte bUnit field Feature Unit Descriptor.(0x03) Lower Byte Audio Control Interface(0x00) wLength 0x0001 Length Mute Control Parameter Block device outputs current setti mute status. Offset Field Size Value Description bMute 0x01 TRUE 0x00 FALSE Volume Control Offset Field bmRequestType bRequest
Size
wValue wIndex wLength
Value 0xA1 0x81 0x82 0x83 0x84 0x0200 0x0300 0x0002
Description GET_CUR GET_MIN GET_MAX GET_RES VOLUME_CONTROL CHANNEL_ Upper Byte bUnit field Feature Unit Descriptor.(0x03) Lower Byte Audio Control Interface(0x00) Volume Control
parameter block Volume Control following. Offset Field Size Value Description wVolume 0xZZYY bRequest GET_CUR returns current volume. must 0xC600 bRequest GET_MIN -58dB 0x1400 bRequest GET_MAX +20dB 0x0100 bRequest GET_RES 1.0dB Table conversion class internal volume register. When host requests volume value which larger than value device, device sets value volume. When host requests volume value which smaller than value device, device sets value volume. value 1.0dB.
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Field wVolume 0x7FFF -0x1400 0x13FF -0x1301 0x1300 0x12FF -0x1201 0x1200 -0x02FF -0x0201 0x0200 0x01FF -0x0101 0x0100 0x00FF -0x0001 0x0000 0xFFFF -0xFF01 0xFF00 0xFEFF -0xFE01 0xFE00 -0xC700 0xC6FF -0xC601 0xC600 0xC5FF -0x8000 Table
value 20.0000 -20.0000 19.0000 -19.0000 19.0000 18.0000 -18.0000 18.0000 -2.0000 -2.0000 2.0000 1.0000 -1.0000 1.0000 0.0000 -0.0000 0.0000 -1.0000 -1.0000 -1.0000 -2.0000 -2.0000 -2.0000 -57.0000 -58.0000 -58.0000 -58.0000 -58.0000 -58.0000
Step
1.0dB
Conversion Table Volume Control
MS0027-E-00 2000/05
ASAHI KASEI [AK5370] Automatic Gain Control Offset Field bmRequestType bRequest wValue wIndex wLength
Size
Value 0xA1 0x81 0x0700 0x0300 0x0001
Description GET_CUR AUTOMATIC_GAIN_CONTROL CHANNEL_0 Upper Byte bUnit field Feature Unit Descriptor.(0x03) Lower Byte Audio Control Interface(0x00) Length Mute Control Parameter Block
device outputs current setting AGC. Offset Field Size Value bAGC 0x01 0x00
Description TRUE (AGC FALSE (AGC
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
Endpoint Control Request
AK5370 supports five sampling frequencies. sampling rate changed when Endpoint Control Request issued. SET_CUR, GET_CUR bRequest only supported. GET_MIN, GET_ MAX, GET_RES bRequest supported.
6.2.1 Endpoint Control Request
Offset Field bmRequestType bRequest wValue wIndex wLength Size Value 0x22 0x01 0x0100 0x0081 0x0003 Description SET_CUR Upper byte: SAMPLING_FREQ_CONTROL (0x01) Lower byte zero Upper Byte zero Lower Byte Endpoint Address (0x81) Length Sampling Frequency Parameter Block
parameter block mute control following. Offset Field Size Value Description iSampleFreq 0xYYYYYY following five values valid. Others invalid. 0x001F40 8kHz 0x002B11 11.025kHz 0x005622 22.05kHz 0x00AC44 44.1kHz(default) 0x00BB80 48kHz iSampleFreq different from above values, AK5370 forces sampling frequency appropriate value.
6.2.2 Endpoint Control Request
Offset Field bmRequestType bRequest wValue wIndex wLength Size Value 0xA2 0x81 0x0100 0x0081 0x0003 Description GET_CUR Upper byte: SAMPLING_FREQ_CONTROL (0x01) Lower byte zero Upper Byte zero Lower Byte Endpoint Address (0x81) Length Sampling Frequency Parameter Block
parameter block mute control following. Offset Field Size Value Description iSampleFreq 0xYYYYYY following five values valid. invalid. 0x001F40 8kHz 0x002B11 11.025kHz 0x005622 22.05kHz 0x00AC44 44.1kHz 0x00BB80 48kHz
Others
MS0027-E-00 2000/05
ASAHI KASEI [AK5370] Package
24pin VSOP (Unit:
*7.9±0.2 1.25±0.20
7.6±0.2 0.15+0.10 -0.05 0.10±0.05 Detail 0-10°
2000/05
0.22 +0.10 -0.05
0.65
0.12
Seating Plane 0.08
NOTE: Dimension does include mold flash.
MS0027-E-00
0.5±0.2
ASAHI KASEI [AK5370]
Marking
AK5370VF AAXXXX
indication LOT# Date Code: XXXXX(4 digits) Marketing Code: AK5370VF Asahi Kasei Logo
MS0027-E-00 2000/05
ASAHI KASEI [AK5370]
IMPORTANT NOTICE These products their specifications subject change without notice. Before considering application, consult Asahi Kasei Microsystems Co., Ltd. (AKM) sales office authorized distributor concerning their current status. assumes liability infringement patent, intellectual property, other right application information contained herein. export these products, devices systems containing them, require export license other official approval under regulations country export pertaining customs tariffs, currency exchange, strategic materials. products neither intended authorized critical components safety, life support, other hazard related device system, assumes responsibility relating such use, except with express written consent Representative Director AKM. used here: hazard related device system designed intended life support maintenance safety applications medicine, aerospace, nuclear energy, other fields, which failure function perform reasonably expected result loss life significant injury damage person property. (b)A critical component whose failure function perform reasonably expected result, whether directly indirectly, loss safety effectiveness device system containing which must therefore meet very high standards performance reliability. responsibility buyer distributor product distributes, disposes otherwise places product with third party notify that party advance above content conditions, buyer distributor agrees assume responsibility liability hold harmless from claims arising from said product absence such notification.
MS0027-E-00 2000/05

AK5370 Converter Incorporates Audio Controller Serial Interf

Top Searches for this datasheet

Other recent searches