PD17012GF-055_15 Datasheet, PDF (42/84 Pages) Renesas Technology Corp – SINGLE-CHIP MICROCONTROLLER WITH ON-CHIP PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR CAR-MOUNTED FM/MW/LW RADIO

µPD17012GF-055
5.2.5 TP (Traffic Program Identification), TA (Traffic Announcement Identification)
These are used for traffic information station identification and traffic information announcement identification.
Depending on the TP and TA statuses of the current receiving station, the methods of identifying a traffic information
station are as follows:
• If TP = 1,
Recognized as the traffic information station.
TP and TA are decoded by inputting the same data at least twice after the tuning operation is ended. If 1 is input
as the TP or TA data, the TP or TA counter is incremented up to 4 counts. If 0 is input, the counter is decremented;
and when the counter becomes 0, it is determined that there is no TP or TA.
The method of identifying the traffic information announcement is as follows.
• If it results that TA=1 when TP=1, the traffic information is recognized as being broadcast.
The methods of switching over to the traffic information are as follows:
• If TA = 1,
If the device is in TAPE/CD mode, it is switched over to RADIO mode.
• If TA = 0,
Returns to the original mode.
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