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+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+.. c:namespace:: DTV.audio
+
+.. _AUDIO_SET_AV_SYNC:
+
+=================
+AUDIO_SET_AV_SYNC
+=================
+
+Name
+----
+
+AUDIO_SET_AV_SYNC
+
+.. attention:: This ioctl is deprecated
+
+Synopsis
+--------
+
+.. c:macro:: AUDIO_SET_AV_SYNC
+
+``int ioctl(int fd, AUDIO_SET_AV_SYNC, boolean state)``
+
+Arguments
+---------
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+
+ -
+
+ - int fd
+
+ - File descriptor returned by a previous call to open().
+
+ -
+
+ - boolean state
+
+ - Tells the Digital TV subsystem if A/V synchronization shall be ON or OFF.
+
+ TRUE: AV-sync ON
+
+ FALSE: AV-sync OFF
+
+Description
+-----------
+
+This ioctl call asks the Audio Device to turn ON or OFF A/V
+synchronization.
+
+Return Value
+------------
+
+On success 0 is returned, on error -1 and the ``errno`` variable is set
+appropriately. The generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.