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Philips Semiconductors
User Manual of High-End RDS/EON
Car Radio System CCR612 (V0.3)
Application Note
96029
the TA requirement and search only for a station with the correct PTY code. If still no station can be found,
the radio will return to its original tuned frequency.
6.5.3 Traffic announcements
Traffic announcements have a special meaning only when TA mode is on.
To switch TA mode on/off, press the TA key. When TA mode is on, the TA icon is on. If the current station
is not a traffic station, the TP icon blinks, and a warning bleep is generated every 30 seconds.
If TA mode is on, the next happens when a traffic announcement is broadcast:
1. Ifthe traffic announcementis detected viaEON, theradio will switchto the linkedprogramme service
transmitting the traffic announcement. The radio will stay at least 4 seconds on this programme
before switchingbackto theoriginal programmeto givethebroadcaster timeto synchronisetheRDS
TP and TA data over its network.
AF follow mode is disabled during an EON traffic announcement.
2. If the radio is in CD-changer, cassette mode or in external mode, it switches temporarily to radio
mode, and the display will show the programme service name of the received station.
3. If the radio is muted, it is temporarily de-muted, and the "MUTE" message is removed from the
display.
4. If the volume was low, it is raised to the TA volume level as installed under the user options (see:
user programmable options). Also, the TA output pin is made low.
5. The TA icon blinks. In case of a traffic announcement on an EON linked station, the EON icon will
also blink.
At the end of the traffic announcement, the old situation is restored again (after an EON traffic
announcement the radio will switch back to the original station). If the user has not changed the volume
setting, it is restored to the value before the traffic announcement. If the volume level was changed, the
new value will be retained.
The current traffic announcement can be cancelled by pressing the TA key, the TA mode remains on.
6.5.4 PTY alarm broadcasts
A PTY alarm message is treated the same way as a traffic announcement. A PTY alarm message will
break-in, even when TA mode is off.
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