Manual Pages for UNIX Operating System command usage for man usb_ac

Devices                                                usb_ac(7D)



NAME
     usb_ac - USB audio control driver

SYNOPSIS
     sound-control@unit-address


DESCRIPTION
     The usb_ac driver is a USBA (Solaris USB Architecture)  com-
     pliant  client  driver that supports the USB Audio Class 1.0
     specification.


     The audio control driver is a USB class  driver  and  offers
     functionality  similar  to  the  audiocs (sun4u) and audiots
     (Sun Blade 100) drivers which use the  Solaris  audio  mixer
     framework   (mixer(7I)).  Unlike  the  audiocs  and  audiots
     drivers, the USB audio device can have play-only or  record-
     only capability.


     Drivers corresponding to other USB audio interfaces  on  the
     device,  including  the usb_as(7D) audio streaming driver or
     the hid(7D) driver, are plumbed under the USB audio  control
     driver and do not directly interface with user applications.


     The usb_ac driver supports USB audio class compliant devices
     with a feature unit.

ERRORS
     If a device is hot-removed while it is  active,  all  subse-
     quent opens returns EIO. All other errors are defined in the
     audio(7I) man page.

FILES
     /kernel/drv/usb_ac            32-bit x86 ELF kernel module


     /kernel/drv/amd64/usb_ac      64-bit x86 ELF kernel module


     /kernel/drv/sparcv9/usb_ac    64-bit   SPARC   ELF    kernel
                                   module.


     /kernel/drv/usb_ac.conf       USB audio driver configuration
                                   file.


ATTRIBUTES




SunOS 5.11          Last change: 13 May 2009                    1






Devices                                                usb_ac(7D)



     See attributes(5) for descriptions of the  following  attri-
     butes:



     _____________________________________________________________
    |       ATTRIBUTE TYPE        |        ATTRIBUTE VALUE       |
    |_____________________________|______________________________|
    | Architecture                | SPARC, x86, PCI-based systems|
    |_____________________________|______________________________|
    | Availability                | driver/usb                   |
    |_____________________________|______________________________|
    | Interface Stability         | Uncommitted                  |
    |_____________________________|______________________________|


SEE ALSO
     cfgadm_usb(1M), ioctl(2), attributes(5), hid(7D),  usba(7D),
     usb_as(7D), audio(7I), mixer(7I), streamio(7I), usb_ah(7M)


     Writing Device Drivers


     Universal Serial Bus Specification 1.0 and 1.1


     Universal Serial Bus Device Class Definition for Audio  Dev-
     ices, Release 1.0


     System Administration: Basic Administration

DIAGNOSTICS
     In addition to being  logged,  the  following  messages  can
     appear  on the system console. All messages are formatted in
     the following manner:

       Warning:  (usb_ac): Error Message...



     Failure to plumb audio streams drivers.

         The usb audio streaming driver or the hid  driver  could
         not  be  plumbed  under the audio control driver and the
         device is not usable.








SunOS 5.11          Last change: 13 May 2009                    2