> > Hi all, > > the usb card have hardware support for 32000, 44100 and 48000 samplerates: > > root@rpi:~# cat /proc/asound/card1/stream0 > Burr-Brown from TI USB Audio CODEC at usb-bcm2708_usb-1.2, full speed : USB Audio > > Playback: > Status: Stop > Interface 1 > Altset 1 > Format: S16_LE > Channels: 2 > Endpoint: 2 OUT (ADAPTIVE) > Rates: 32000, 44100, 48000 > [...]
Your usb audio seem support mono, stereo, 8 bits and 16 bits and some endpoint support 8000,11025,16000,22025Hz Seem like driver bug if you can only use 32000 44100 and 48000Hz > > (full trace below) > root@rpi:~# lsusb -v -s 1:14 > Bus 002 Device 004: ID 08bb:2902 Texas Instruments PCM2902 Audio Codec 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming Interface Descriptor: > bLength 11 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 1 > bSubframeSize 2 > bBitResolution 16 > bSamFreqType 1 Discrete > tSamFreq[ 0] 22050 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 5 > Transfer Type Isochronous > Synch Type Asynchronous > Usage Type Data > wMaxPacketSize 0x002e 1x 46 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 0 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 9 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming 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 0x84 EP 4 IN > bmAttributes 5 > Transfer Type Isochronous > Synch Type Asynchronous > Usage Type Data > wMaxPacketSize 0x0044 1x 68 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 0 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 10 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming Interface Descriptor: > bLength 11 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 1 > bSubframeSize 2 > bBitResolution 16 > bSamFreqType 1 Discrete > tSamFreq[ 0] 16000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 5 > Transfer Type Isochronous > Synch Type Asynchronous > Usage Type Data > wMaxPacketSize 0x0022 1x 34 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 0 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 11 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming Interface Descriptor: > bLength 11 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 2 > bSubframeSize 1 > bBitResolution 8 > bSamFreqType 1 Discrete > tSamFreq[ 0] 16000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 5 > Transfer Type Isochronous > Synch Type Asynchronous > Usage Type Data > wMaxPacketSize 0x0022 1x 34 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 0 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 12 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming Interface Descriptor: > bLength 11 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 1 > bSubframeSize 1 > bBitResolution 8 > bSamFreqType 1 Discrete > tSamFreq[ 0] 16000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 5 > Transfer Type Isochronous > Synch Type Asynchronous > Usage Type Data > wMaxPacketSize 0x0011 1x 17 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 0 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 13 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming Interface Descriptor: > bLength 11 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 2 > bSubframeSize 1 > bBitResolution 8 > bSamFreqType 1 Discrete > tSamFreq[ 0] 8000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 5 > Transfer Type Isochronous > Synch Type Asynchronous > Usage Type Data > wMaxPacketSize 0x0012 1x 18 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 0 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 14 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming Interface Descriptor: > bLength 11 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 1 > bSubframeSize 1 > bBitResolution 8 > bSamFreqType 1 Discrete > tSamFreq[ 0] 8000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 5 > Transfer Type Isochronous > Synch Type Asynchronous > Usage Type Data > wMaxPacketSize 0x0009 1x 9 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 0 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 15 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming 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] 11025 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 13 > Transfer Type Isochronous > Synch Type Synchronous > Usage Type Data > wMaxPacketSize 0x0030 1x 48 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 0 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 16 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming Interface Descriptor: > bLength 11 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 1 > bSubframeSize 2 > bBitResolution 16 > bSamFreqType 1 Discrete > tSamFreq[ 0] 11025 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 13 > Transfer Type Isochronous > Synch Type Synchronous > Usage Type Data > wMaxPacketSize 0x0018 1x 24 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 0 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 17 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming Interface Descriptor: > bLength 11 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 2 > bSubframeSize 1 > bBitResolution 8 > bSamFreqType 1 Discrete > tSamFreq[ 0] 11025 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 13 > Transfer Type Isochronous > Synch Type Synchronous > Usage Type Data > wMaxPacketSize 0x0018 1x 24 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 0 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 18 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 5 > bDelay 0 frames > wFormatTag 1 PCM > AudioStreaming Interface Descriptor: > bLength 11 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 1 > bSubframeSize 1 > bBitResolution 8 > bSamFreqType 1 Discrete > tSamFreq[ 0] 11025 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 13 > Transfer Type Isochronous > Synch Type Synchronous > Usage Type Data > wMaxPacketSize 0x000c 1x 12 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 >
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