Takashi Iwai wrote:
>
> most of debug messages have been moved to snd_printdd(). that is,
> to show such debug messages, you'll need to configure alsa-driver with
> --with-debug=detect. if your usb device doesn't work try this, and
> send me the output of kernel messages together with the output of
> lsusb.
>
Using the latest code this is all the info I can get for this card.
To refresh your memory.
It appears that the card is being correctly found and registered but
that alsa cannot set up the pcm devices.
There are two obvious things that are possibly directly related. One is
that the card is created in /proc/asound three times and the other is
the AS_GENERAL descriptor not found error.
----
#cat: /proc/asound/dev/controlC2: File descriptor in bad state
----
#more /var/log/messages
Jun 12 13:52:27 mahine kernel: usb.c: registered new driver snd-usb-audio
Jun 12 13:52:27 mahine kernel: ALSA usbaudio.c:1718: adding an output
interface
3:0:%%j
Jun 12 13:52:27 mahine kernel: ALSA usbaudio.c:1712: adding an input
interface 3
:0:%%j
Jun 12 13:52:27 mahine kernel: ALSA usbaudio.c:1718: adding an output
interface
3:3:%%j
Jun 12 13:52:27 mahine kernel: ALSA usbaudio.c:1712: adding an input
interface 3
:3:%%j
Jun 12 13:52:27 mahine kernel: ALSA usbaudio.c:1718: adding an output
interface
3:6:%%j
Jun 12 13:52:27 mahine kernel: ALSA usbaudio.c:1712: adding an input
interface 3
:6:%%j
-----
usb.c: registered new driver snd-usb-audio
ALSA usbaudio.c:1718: adding an output interface 3:0:%j
ALSA usbaudio.c:1712: adding an input interface 3:0:%j
ALSA usbaudio.c:1296: 3:1:1 : AS_GENERAL descriptor not found
ALSA usbaudio.c:1296: 3:2:1 : AS_GENERAL descriptor not found
devfs_register(unknown): could not append to parent, err: -17
ALSA usbaudio.c:1718: adding an output interface 3:3:%j
ALSA usbaudio.c:1712: adding an input interface 3:3:%j
ALSA usbaudio.c:1381: 3:4:1 : non-supported sample bit 1 in 3 bytes
ALSA usbaudio.c:1296: 3:4:2 : AS_GENERAL descriptor not found
ALSA usbaudio.c:1381: 3:4:3 : non-supported sample bit 1 in 3 bytes
ALSA usbaudio.c:1381: 3:5:1 : non-supported sample bit 1 in 3 bytes
ALSA usbaudio.c:1296: 3:5:2 : AS_GENERAL descriptor not found
ALSA usbaudio.c:1381: 3:5:3 : non-supported sample bit 1 in 3 bytes
devfs_register(unknown): could not append to parent, err: -17
ALSA usbaudio.c:1718: adding an output interface 3:6:%j
ALSA usbaudio.c:1712: adding an input interface 3:6:%j
ALSA usbaudio.c:1381: 3:7:1 : non-supported sample bit 1 in 3 bytes
ALSA usbaudio.c:1296: 3:7:2 : AS_GENERAL descriptor not found
ALSA usbaudio.c:1381: 3:7:3 : non-supported sample bit 1 in 3 bytes
ALSA usbaudio.c:1381: 3:8:1 : non-supported sample bit 1 in 3 bytes
ALSA usbaudio.c:1296: 3:8:2 : AS_GENERAL descriptor not found
ALSA usbaudio.c:1381: 3:8:3 : non-supported sample bit 1 in 3 bytes
devfs_register(unknown): could not append to parent, err: -17
----
--
Patrick Shirkey - Boost Hardware Ltd.
For the discerning hardware connoisseur
Http://www.boosthardware.com
Http://www.boosthardware.com/LAU/guide/
========================================
Bus 002 Device 001: ID 0000:0000 Virtual Hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0000 Virtual
idProduct 0x0000 Hub
bcdDevice 0.00
iManufacturer 0
iProduct 2 USB UHCI-alt Root Hub
iSerial 1 d400
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 8
bInterval 255
Language IDs: (length=4)
0000 (null)((null))
Bus 001 Device 001: ID 0000:0000 Virtual Hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0000 Virtual
idProduct 0x0000 Hub
bcdDevice 0.00
iManufacturer 0
iProduct 2 USB UHCI-alt Root Hub
iSerial 1 cc00
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 8
bInterval 255
Language IDs: (length=4)
0000 (null)((null))
Bus 001 Device 002: ID 09da:0006 A4 Tech Co., Ltd.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 Interface
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x09da A4 Tech Co., Ltd.
idProduct 0x0006
bcdDevice 1.00
iManufacturer 1 A4Tech
iProduct 2 USB Optical Mouse
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Devices
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.00
bCountryCode 0
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 54
cannot get report descriptor
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 4
bInterval 10
Language IDs: (length=4)
0409 English(US)
Bus 001 Device 003: ID 0763:2001 Midiman
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 0 Interface
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0763 Midiman
idProduct 0x2001
bcdDevice 1.01
iManufacturer 1 M Audio
iProduct 2 USB AudioSport Quattro (tm)
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 974
bNumInterfaces 10
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 2 USB AudioSport Quattro (tm)
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 52
bInCollection 2
baInterfaceNr( 0) 1
baInterfaceNr( 1) 2
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 5
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 6
wTerminalType 0x0601 Analog Connector
bAssocTerminal 0
bSourceID 5
iTerminal 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0601 Analog Connector
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 2
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 1
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 4
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 5
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 17
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 3 Discrete
tSamFreq[ 0] 11025
tSamFreq[ 1] 22050
tSamFreq[ 2] 44100
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
wMaxPacketSize 192
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 4
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 2
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 17
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 3 Discrete
tSamFreq[ 0] 11025
tSamFreq[ 1] 22050
tSamFreq[ 2] 44100
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
wMaxPacketSize 192
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 2 USB AudioSport Quattro (tm)
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 52
bInCollection 2
baInterfaceNr( 0) 4
baInterfaceNr( 1) 5
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 5
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 6
wTerminalType 0x0601 Analog Connector
bAssocTerminal 0
bSourceID 5
iTerminal 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0601 Analog Connector
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 2
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 1
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 5
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 2 Discrete
tSamFreq[ 0] 88200
tSamFreq[ 1] 96000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
wMaxPacketSize 576
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 3
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 5
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 20
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 4 Discrete
tSamFreq[ 0] 11025
tSamFreq[ 1] 22050
tSamFreq[ 2] 44100
tSamFreq[ 3] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
wMaxPacketSize 288
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 4
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 5
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 20
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 4 Discrete
tSamFreq[ 0] 11025
tSamFreq[ 1] 22050
tSamFreq[ 2] 44100
tSamFreq[ 3] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
wMaxPacketSize 192
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 5
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 5
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 2
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 2 Discrete
tSamFreq[ 0] 88200
tSamFreq[ 1] 96000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
wMaxPacketSize 576
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 5
bAlternateSetting 3
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 2
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 20
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 4 Discrete
tSamFreq[ 0] 11025
tSamFreq[ 1] 22050
tSamFreq[ 2] 44100
tSamFreq[ 3] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
wMaxPacketSize 288
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 5
bAlternateSetting 4
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 2
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 20
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 4 Discrete
tSamFreq[ 0] 11025
tSamFreq[ 1] 22050
tSamFreq[ 2] 44100
tSamFreq[ 3] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
wMaxPacketSize 192
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 6
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 2 USB AudioSport Quattro (tm)
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 52
bInCollection 2
baInterfaceNr( 0) 7
baInterfaceNr( 1) 8
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 7
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 8
wTerminalType 0x0601 Analog Connector
bAssocTerminal 0
bSourceID 7
iTerminal 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0601 Analog Connector
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 4
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 3
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 7
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 7
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 7
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 2 Discrete
tSamFreq[ 0] 88200
tSamFreq[ 1] 96000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
wMaxPacketSize 576
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 7
bAlternateSetting 3
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 7
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 20
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 4 Discrete
tSamFreq[ 0] 11025
tSamFreq[ 1] 22050
tSamFreq[ 2] 44100
tSamFreq[ 3] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
wMaxPacketSize 288
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 7
bAlternateSetting 4
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 7
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 20
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 4 Discrete
tSamFreq[ 0] 11025
tSamFreq[ 1] 22050
tSamFreq[ 2] 44100
tSamFreq[ 3] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
wMaxPacketSize 192
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 8
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 8
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 4
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 2 Discrete
tSamFreq[ 0] 88200
tSamFreq[ 1] 96000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
wMaxPacketSize 576
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 8
bAlternateSetting 3
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 4
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 20
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 4 Discrete
tSamFreq[ 0] 11025
tSamFreq[ 1] 22050
tSamFreq[ 2] 44100
tSamFreq[ 3] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
wMaxPacketSize 288
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 8
bAlternateSetting 4
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 4
bDelay 1 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 20
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 4 Discrete
tSamFreq[ 0] 11025
tSamFreq[ 1] 22050
tSamFreq[ 2] 44100
tSamFreq[ 3] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
wMaxPacketSize 192
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 9
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 32
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type none
wMaxPacketSize 32
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type none
wMaxPacketSize 32
bInterval 0
Language IDs: (length=4)
0409 English(US)
M Audio USB AudioSport Quattro (tm)
00: 09 02 ce 03 0a 01 00 40 00 09 04 00 00 00 01 01
10: 00 02 0a 24 01 00 01 34 00 02 01 02 0c 24 02 05
20: 01 01 00 02 03 00 00 00 09 24 03 06 01 06 00 05
30: 00 0c 24 02 01 01 06 00 02 03 00 00 00 09 24 03
40: 02 01 01 00 01 00 09 04 01 00 00 01 02 00 00 09
50: 04 01 04 01 01 02 00 00 07 24 01 05 01 01 00 11
60: 24 02 01 02 02 10 03 11 2b 00 22 56 00 44 ac 00
70: 09 05 03 09 c0 00 01 00 00 07 25 01 01 00 00 00
80: 09 04 02 00 00 01 02 00 00 09 04 02 04 01 01 02
90: 00 00 07 24 01 02 01 01 00 11 24 02 01 02 02 10
a0: 03 11 2b 00 22 56 00 44 ac 00 09 05 85 0d c0 00
b0: 01 00 00 07 25 01 01 00 00 00 09 04 03 00 00 01
c0: 01 00 02 0a 24 01 00 01 34 00 02 04 05 0c 24 02
d0: 05 01 01 00 02 03 00 00 00 09 24 03 06 01 06 00
e0: 05 00 0c 24 02 01 01 06 00 02 03 00 00 00 09 24
f0: 03 02 01 01 00 01 00 09 04 04 00 00 01 02 00 00
100: 09 04 04 01 01 01 02 00 00 07 24 01 05 01 01 00
110: 0e 24 02 01 02 03 18 02 88 58 01 00 77 01 09 05
120: 03 09 40 02 01 00 00 07 25 01 01 00 00 00 09 04
130: 04 03 01 01 02 00 00 07 24 01 05 01 01 00 14 24
140: 02 01 02 03 18 04 11 2b 00 22 56 00 44 ac 00 80
150: bb 00 09 05 03 09 20 01 01 00 00 07 25 01 01 00
160: 00 00 09 04 04 04 01 01 02 00 00 07 24 01 05 01
170: 01 00 14 24 02 01 02 02 10 04 11 2b 00 22 56 00
180: 44 ac 00 80 bb 00 09 05 03 09 c0 00 01 00 00 07
190: 25 01 01 00 00 00 09 04 05 00 00 01 02 00 00 09
1a0: 04 05 01 01 01 02 00 00 07 24 01 02 01 01 00 0e
1b0: 24 02 01 02 03 18 02 88 58 01 00 77 01 09 05 85
1c0: 0d 40 02 01 00 00 07 25 01 01 00 00 00 09 04 05
1d0: 03 01 01 02 00 00 07 24 01 02 01 01 00 14 24 02
1e0: 01 02 03 18 04 11 2b 00 22 56 00 44 ac 00 80 bb
1f0: 00 09 05 85 0d 20 01 01 00 00 07 25 01 01 00 00
200: 00 09 04 05 04 01 01 02 00 00 07 24 01 02 01 01
210: 00 14 24 02 01 02 02 10 04 11 2b 00 22 56 00 44
220: ac 00 80 bb 00 09 05 85 0d c0 00 01 00 00 07 25
230: 01 01 00 00 00 09 04 06 00 00 01 01 00 02 0a 24
240: 01 00 01 34 00 02 07 08 0c 24 02 07 01 01 00 02
250: 03 00 00 00 09 24 03 08 01 06 00 07 00 0c 24 02
260: 03 01 06 00 02 03 00 00 00 09 24 03 04 01 01 00
270: 03 00 09 04 07 00 00 01 02 00 00 09 04 07 01 01
280: 01 02 00 00 07 24 01 07 01 01 00 0e 24 02 01 02
290: 03 18 02 88 58 01 00 77 01 09 05 04 09 40 02 01
2a0: 00 00 07 25 01 01 00 00 00 09 04 07 03 01 01 02
2b0: 00 00 07 24 01 07 01 01 00 14 24 02 01 02 03 18
2c0: 04 11 2b 00 22 56 00 44 ac 00 80 bb 00 09 05 04
2d0: 09 20 01 01 00 00 07 25 01 01 00 00 00 09 04 07
2e0: 04 01 01 02 00 00 07 24 01 07 01 01 00 14 24 02
2f0: 01 02 02 10 04 11 2b 00 22 56 00 44 ac 00 80 bb
300: 00 09 05 04 09 c0 00 01 00 00 07 25 01 01 00 00
310: 00 09 04 08 00 00 01 02 00 00 09 04 08 01 01 01
320: 02 00 00 07 24 01 04 01 01 00 0e 24 02 01 02 03
330: 18 02 88 58 01 00 77 01 09 05 86 0d 40 02 01 00
340: 00 07 25 01 01 00 00 00 09 04 08 03 01 01 02 00
350: 00 07 24 01 04 01 01 00 14 24 02 01 02 03 18 04
360: 11 2b 00 22 56 00 44 ac 00 80 bb 00 09 05 86 0d
370: 20 01 01 00 00 07 25 01 01 00 00 00 09 04 08 04
380: 01 01 02 00 00 07 24 01 04 01 01 00 14 24 02 01
390: 02 02 10 04 11 2b 00 22 56 00 44 ac 00 80 bb 00
3a0: 09 05 86 0d c0 00 01 00 00 07 25 01 01 00 00 00
3b0: 09 04 09 00 03 ff 00 00 00 07 05 81 03 20 00 01
3c0: 07 05 82 02 20 00 00 07 05 02 02 20 00 00
