I just bought a 24/96 USB DAC on Ebay. This uses the SA9023 for USB interface. Not 100% sure but I think that this chip can be configured to work in either adaptive or asynchronous USB data transfer mode. I'd like to check which mode this particular unit uses. How can I do that? I have access to Windows 8.x and Linux (Raspbian and Ubuntu 15.04) systems.
Output of lsusb -v or file /proc/asound/cardX/stream0 . Here is output of
HiFimeDIY Audio SA9023 (copied from problem with volume level after reboot : Bug report • RuneAudio Forum ):
HiFimeDIY Audio SA9023 (copied from problem with volume level after reboot : Bug report • RuneAudio Forum ):
Code:
interface #0 stream status: (/proc/asound/card0/stream0)
--------------------------------------------------------
HiFimeDIY Audio SA9023 USB Audio at usb-bcm2708_usb-1.2, full speed : USB Audio
Playback:
Status: Running
Interface = 3
Altset = 1
Packet Size = 388
Momentary freq = 44100 Hz (0x2c.199a)
Interface 3
Altset 1
Format: S16_LE
Channels: 2
Endpoint: 3 OUT (ADAPTIVE)
Rates: 96000, 88200, 48000, 44100, 32000
Interface 3
Altset 2
Format: S24_3LE
Channels: 2
Endpoint: 3 OUT (ADAPTIVE)
Rates: 96000, 88200, 48000, 44100, 32000
Capture:
Status: Stop
Interface 2
Altset 1
Format: S16_LE
Channels: 2
Endpoint: 2 IN (ADAPTIVE)
Rates: 96000, 88200, 48000, 44100, 32000
Interface 2
Altset 2
Format: S24_3LE
Channels: 2
Endpoint: 2 IN (ADAPTIVE)
Rates: 96000, 88200, 48000, 44100, 32000
Awesome! Thanks for sharing that. Here are the contents of the "stream0" file for the DAC (while I am giving it a listen):
Code:
SA9023 USB Audio at usb-3f980000.usb-1.2, full speed : USB Audio
Playback:
Status: Running
Interface = 3
Altset = 1
Packet Size = 224
Momentary freq = 44100 Hz (0x2c.199a)
Interface 3
Altset 1
Format: S16_LE
Channels: 2
Endpoint: 3 OUT (ADAPTIVE)
Rates: 96000, 88200, 48000, 44100, 32000
Interface 3
Altset 2
Format: S24_3LE
Channels: 2
Endpoint: 3 OUT (ADAPTIVE)
Rates: 96000, 88200, 48000, 44100, 32000
Capture:
Status: Stop
Interface 2
Altset 1
Format: S16_LE
Channels: 2
Endpoint: 2 IN (ADAPTIVE)
Rates: 96000, 88200, 48000, 44100, 32000
Interface 2
Altset 2
Format: S24_3LE
Channels: 2
Endpoint: 2 IN (ADAPTIVE)
Rates: 96000, 88200, 48000, 44100, 32000
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