Mlan Fs Manager - Yamaha mLAN Manual Book

Technical Explanations

11. mLAN Fs Manager

mLAN Fs Manager manages the master and slave relationship between each node's word clock
(WC/WCLK).
To transmit and receive digital audio data between multiple devices correctly, you need to assign
one of the devices on the bus as "master" so that the rest of the devices lock to the word clock
generated from the master device.
The word clock master setting provides two modes: manual mode and auto mode.
Using the group master setting makes it easy to set one device to master and the other devices to
slave.
Manual mode
In this mode, the user assigns devices as master and slave. The user also assigns a group master.
After a Bus Reset or Power-on Reset occurs, the master/slave relationship is restored based on the
stored information. If the master device no longer exists after a Bus Reset or Power-on Reset
occurs, the slave devices cannot receive word clock data. Therefore, audio data on those devices
will be muted.
Auto mode
In this mode, the master/slave relationship is automatically determined. If the user has specified
group master, the remainder become slaves.
The word clock master/slave relationship specified before a Bus Reset or Power-on Reset occurs
will not be stored. Instead, the word clock master/slave relationship will be re-configured based
on the stored audio stream connection, so that the device that transmits audio will become
master.
22