CDP-LSA1, MDS-LSA1, STR-LSA1 - Sony Audio Service Manual (repair manual). Page 9

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9
(3)  Bus Reset
When a different device is connected to or disconnected from the i.LINK device, the changes in the i.LINK system are detected to
generate bus reset. Bus reset detects the connection or disconnection of cables from the cable bias voltage input from the connected device.
When bus reset occurs, the i.LINK system is restructured by the following process.
• Output of bus reset signal (approximately 170 µs)
• Determination of ROOT
• Resetting of node number
1. Output of bus reset signal
The device detecting the connection or disconnection of a new device outputs the bus reset signal (approximately 170 µs) to all devices.
This starts the initialization of the bus.
2. Determination of ROOT
The ROOT device is determined in the i.LINK system. Some devices are more inclined to being set as the root according to the applica-
tions of the device.
(Note) LOOP Connection
If set to loop connection, errors will occur in the process to determine the root, resulting in timeover. For this reason, by determining the
timeover in the process of determining the root, loop connection is detected. If it cannot be determined correctly, errors occur in the opera-
tions of the unit. (NO SIGNAL is displayed, etc.)
3. Re-setting the node number
When the root has been determined, the node number is re-set from 0. The node number is used as the destination of the communication
between devices. The last maximum value is the node number of ROOT. (Maximum is 63)
(Repair Tips) When “NEW CONNECT” is displayed
When bus reset occurs, “NEW CONNECT” blinks with the LISSA series devices. To check for contact defects of cables and connectors,
move the cables or connectors after connecting the unit, and check if bus reset occurs.
(Reference) Bus reset during recording
If bus reset occurs while transmitting music data, the sound skipping may happens. If recording on a MD player, do not connect/discon-
nect the i.LINK cable of any device.
(Reference) Disconnecting the i.LINK cable
If the cable itself disconnects while connecting, bus reset will occur at one side, and normal operations will be performed at the opposite
side, and bus reset will occur continuously. In this case, the application will hang up, or continuous bus reset will be detected, resulting in
error messages, etc.
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