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9

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

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.

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.

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.)

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)

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.

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.

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.

10

With the i.LINK system, there are 64 lines (0 to 63) for sending video and sounds between devices. These lines reserve ROOT when it is

being used between devices, set it so that it cannot be used by other devices. This method is called P to P (Point to Point) connection for one
device to communicate with another device. The LINC (Logical INterface Connection) described in the instruction manual corresponds to
this P to P connection.

Sending data in the no-LINC state is called Broadcast communication. In Sony DV camcorders, the 63rd channel of the transfer line is

used for outputting signals of the DV camcorder.

Even when audio signals are output in the no-LINC state in Sony audio devices, broadcast communication will be performed.

(Example: STR-LSA1 Tuner output, etc.)

When sending music data with the input device selected amongst LISSA series devices and LISSA series devices, the data will always be

LINCed and output. However, when not LINCed from other devices, the audio signals will be broadcast-output.

Only one signal can be used by channels. When two DV camcorders are set to the playback state and broadcast communication is

performed, the signal which started playback later will dominate the channel.

When LISSA series devices which are not LINCed with other devices start playback, the signals of the DV camcorder will be blocked by

LISSA series’ signal. In this case, the DV camcorder will be stopped once, and when playback is started again, the 63 channel will be
dominated by DV camcorder again.

11

i.LINK signals consist of the cable bias voltage, cycle signal, i.LINK header signal, and i.LINK data signal.

1

With the LISSA series, if other devices are not connected, only the cable bias voltage will be output.

When the cable bias of other devices are detected by the i.LINK terminal, the cycle signal which is a sync signal will be output.

Before LINC

(Only cycle signal)

2

When the input destination is LINCed with other devices, the i.LINK header signal will be output after the cycle signal. When devices

which cannot be LINCed (incompatible PC, etc.) are selected as the input destination, only the cycle signal will be output.

As the i.LINK data signal is smaller than the cable bias voltage, the oscilloscope is checked in the AC mode (10 mV, 1 µs).

Cable bias

1.85 V

After LINC

(Cycle signal+ header signal)

12

3

When data is communicated between LINCed devices, the i.LINK data signal will be output. As the header signal and data signal are an

isochronous packet with no time-related transmission restrictions, they are given priority than the asynchronous packet with no time-related
restrictions, and sent immediately after the cycle signal.

i.LINK signals such as video and audio signals are composed of the header signal and data signal. When sending music data between

LINCed LISSA series devices, data will be sent at 200 Mbps.

When TUNER or ANALOG is selected by switching the input source of the STR-LSA1, music data will be output in the non-LINC state

(broadcast output). When a LISSA series device broadcast outputs data, data will be sent at 100 Mbps instead of 200 Mbps. For this reason,
the signal waveform on the display of Oscilloscope will be longer along the time axis during LINC playback.

Before music playback

(Cycle signal + header signal)

During music playback

(Cycle signal + header signal + data signal)

During music output

(Cycle signal + header signal + data signal)