Thomas Sailer wrote:
>
>
> On Fri, 2002-11-08 at 06:11, Kevin Brosius wrote:
> > I've tried the latest usb changes from the bk tree, and continue to see
> > the attached null pointer problem when trying to install the 'audio'
> > module.
>
> Can you mail me a lsusb descriptor dump and cc
> [EMAIL PROTECTED]
Sure, see attached. This is while running 2.4.19 with the alsa sound
setup rather than oss usb audio, in case that matters. If you'd prefer
a 2.5 dump of lsusb let me know.
--
Kevin
Bus 001 Device 001: ID 0000:0000
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0000
idProduct 0x0000
bcdDevice 0.00
iManufacturer 0
iProduct 2 USB OHCI Root Hub
iSerial 1 c00dc000
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 2
bInterval 255
Language IDs: (length=4)
0000 (null)((null))
Bus 001 Device 002: ID 041e:3000 Creative Labs
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 Interface
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x041e Creative Labs
idProduct 0x3000
bcdDevice 1.00
iManufacturer 1 Creative Technology Ltd.
iProduct 2 Sound Blaster Extigy
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 794
bNumInterfaces 4
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 410
bInCollection 3
baInterfaceNr( 0) 1
baInterfaceNr( 1) 2
baInterfaceNr( 2) 3
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bNrChannels 6
wChannelConfig 0x003f
Left Front (L)
Right Front (R)
Center Front (C)
Low Freqency Enhancement (LFE)
Left Surround (LS)
Right Surround (RS)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 21
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 2
bSourceID 1
bControlSize 2
bmaControls( 0) 0x03
bmaControls( 1) 0x00
Mute
Volume
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bNrChannels 6
wChannelConfig 0x003f
Left Front (L)
Right Front (R)
Center Front (C)
Low Freqency Enhancement (LFE)
Left Surround (LS)
Right Surround (RS)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 4
wTerminalType 0x0602 Digital Audio Interface
bAssocTerminal 0
bNrChannels 6
wChannelConfig 0x003f
Left Front (L)
Right Front (R)
Center Front (C)
Low Freqency Enhancement (LFE)
Left Surround (LS)
Right Surround (RS)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 5 (SELECTOR_UNIT)
bUnitID 5
bNrInPins 2
baSource( 0) 3
baSource( 1) 4
iSelector 0
AudioControl Interface Descriptor:
bLength 21
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 6
bSourceID 5
bControlSize 2
bmaControls( 0) 0x03
bmaControls( 1) 0x00
Mute
Volume
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 7
wTerminalType 0x0603 Line Connector
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 8
bSourceID 7
bControlSize 2
bmaControls( 0) 0x03
bmaControls( 1) 0x00
Mute
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
iFeature 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 9
wTerminalType 0x0201 Microphone
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 10
bSourceID 9
bControlSize 2
bmaControls( 0) 0x03
bmaControls( 1) 0x00
Mute
Volume
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 5 (SELECTOR_UNIT)
bUnitID 11
bNrInPins 3
baSource( 0) 7
baSource( 1) 9
baSource( 2) 17
iSelector 0
AudioControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 12
bSourceID 11
bControlSize 2
bmaControls( 0) 0x03
bmaControls( 1) 0x00
Mute
Volume
bmaControls( 0) 0x00
bmaControls( 1) 0x00
bmaControls( 0) 0x00
bmaControls( 1) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 13
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 12
iTerminal 0
AudioControl Interface Descriptor:
bLength 17
bDescriptorType 36
bDescriptorSubtype 4 (MIXER_UNIT)
bUnitID 14
bNrInPins 2
baSourceID( 0) 8
baSourceID( 1) 6
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
bmControls 0x00
iMixer 0
junk at descriptor end: 00 00 00 00
AudioControl Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 7 (PROCESSING_UNIT)
bUnitID 15
wProcessType 3
bNrPins 1
baSourceID( 0) 14
bNrChannels 5
wChannelConfig 0x0037
Left Front (L)
Right Front (R)
Center Front (C)
Left Surround (LS)
Right Surround (RS)
iChannelNames 0
bControlSize 1
bmControls( 0) 0x01
Enable Processing
iProcessing 0
Process-Specific
AudioControl Interface Descriptor:
bLength 26
bDescriptorType 36
bDescriptorSubtype 4 (MIXER_UNIT)
bUnitID 16
bNrInPins 4
baSourceID( 0) 2
baSourceID( 1) 6
baSourceID( 2) 15
baSourceID( 3) 10
bNrChannels 6
wChannelConfig 0x003f
Left Front (L)
Right Front (R)
Center Front (C)
Low Freqency Enhancement (LFE)
Left Surround (LS)
Right Surround (RS)
iChannelNames 0
bmControls 0x00
bmControls 0x00
bmControls 0x00
iMixer 0
junk at descriptor end: 00 00 00 00 00 00 00 00 00
AudioControl Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (PROCESSING_UNIT)
bUnitID 17
wProcessType 1
bNrPins 1
baSourceID( 0) 16
bNrChannels 6
wChannelConfig 0x003f
Left Front (L)
Right Front (R)
Center Front (C)
Low Freqency Enhancement (LFE)
Left Surround (LS)
Right Surround (RS)
iChannelNames 0
bControlSize 1
bmControls( 0) 0x03
Enable Processing
iProcessing 0
Process-Specific 07 03 00 03 00 0b 00 33 00 3b 00 37 00 3f 00
AudioControl Interface Descriptor:
bLength 21
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 18
bSourceID 17
bControlSize 2
bmaControls( 0) 0x17
bmaControls( 1) 0x00
Mute
Volume
Bass
Treble
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 0) 0x02
bmaControls( 1) 0x00
Volume
iFeature 0
AudioControl Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 8 (EXTENSION_UNIT)
bUnitID 27
wExtensionCode 0
bNrPins 1
baSourceID( 0) 18
bNrChannels 6
wChannelConfig 63
Left Front (L)
Right Front (R)
Center Front (C)
Low Freqency Enhancement (LFE)
Left Surround (LS)
Right Surround (RS)
iChannelNames 0
bControlSize 1
bmControls( 0) 0x01
Enable Processing
iExtension 0
AudioControl Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 28
bSourceID 27
bControlSize 1
bmaControls( 0) 0x01
Mute
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 19
wTerminalType 0x0301 Speaker
bAssocTerminal 0
bSourceID 28
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 20
wTerminalType 0x0302 Headphones
bAssocTerminal 0
bSourceID 18
iTerminal 0
AudioControl Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 8 (EXTENSION_UNIT)
bUnitID 21
wExtensionCode 0
bNrPins 1
baSourceID( 0) 27
bNrChannels 6
wChannelConfig 63
Left Front (L)
Right Front (R)
Center Front (C)
Low Freqency Enhancement (LFE)
Left Surround (LS)
Right Surround (RS)
iChannelNames 0
bControlSize 1
bmControls( 0) 0x01
Enable Processing
iExtension 0
AudioControl Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 22
bSourceID 21
bControlSize 1
bmaControls( 0) 0x01
Mute
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 23
bSourceID 22
bControlSize 1
bmaControls( 0) 0x01
Mute
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 24
wTerminalType 0x0602 Digital Audio Interface
bAssocTerminal 0
bSourceID 23
iTerminal 0
AudioControl Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 25
bSourceID 22
bControlSize 1
bmaControls( 0) 0x01
Mute
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
bmaControls( 0) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 26
wTerminalType 0x0602 Digital Audio Interface
bAssocTerminal 0
bSourceID 25
iTerminal 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 8
bInterval 10
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 1
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 1
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 200
bInterval 1
bRefresh 0
bSynchAddress 3
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 6
bSynchAddress 0
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 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 13
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 8000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 40
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 2
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 13
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 16000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 72
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
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 13
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 24000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 104
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
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 13
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 32000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 136
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 5
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 13
bDelay 0 frames
wFormatTag 1 PCM
AudioControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 200
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 3
bDelay 0 frames
wFormatTag 4098 AC-3
AudioControl Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 2 (FORMAT_TYPE_II)
Warning: Descriptor too short
wMaxBitRate 640
wSamplesPerFrame 1536
bSamFreqType 2 Discrete
tSamFreq[ 0] 44100
tSamFreq[ 1] 48000
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 3 (FORMAT_SPECIFIC)
wFormatTag 4098 AC-3
bmBSID 0x0000001f
bmAC3Features 0x00
Internal Dynamic Range Control: not supported
junk at descriptor end: 00 00
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
wMaxPacketSize 84
bInterval 1
bRefresh 0
bSynchAddress 5
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type none
wMaxPacketSize 3
bInterval 1
bRefresh 6
bSynchAddress 0
Language IDs: (length=4)
0409 English(US)
