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usb_ah(7M)			STREAMS Modules			    usb_ah(7M)

NAME
       usb_ah - USB audio HID STREAMS module

DESCRIPTION
       The usb_ah STREAMS module enables the USB input control device which is
       a member of the Human Interface Device (HID)  class and	provides  sup‐
       port  for volume change and mute button. The usb_ah module is pushed on
       top of a HID class driver instance (see hid(7D))	 and  below  an	 Audio
       Control	class  driver instance (see usb_ac(7D)). It translates the HID
       specific events to the events that are supported by the	Solaris	 audio
       mixer framework.

FILES
       /kernel/strmod/usb_ah

	   32-bit ELF kernel STREAMS module. (x86 platform only.)

       /kernel/strmod/sparcv9/usb_ah

	   SPARC 64-bit ELF kernel STREAMS module

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Architecture		     │PCI-based systems		   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Availability		     │SUNWusb			   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Interface Stability	     │Evolving			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       mixerctl(1),  hid(7D),  usba(7D),  usb_ac(7D), usb_as(7D), usb_mid(7D),
       audio(7I), mixer(7I)

       STREAMS Programming Guide

       System Administration Guide: Basic Administration

       Universal Serial Bus Specification 1.0 and 1.1

       Device Class Definition for Human Interface Devices (HID) 1.1

DIAGNOSTICS
       None

NOTES
       If USB audio drivers are not loaded, buttons will not be active.

SunOS 5.10			  27 Sep 2004			    usb_ah(7M)

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