PD178016GC-051_15 Datasheet, PDF (39/96 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER WITH BUILT-IN PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO APPLICATIONS

µPD178016GC-051
3. RDS (RADIO DATA SYSTEM) FUNCTIONS
3.1 Processing RDS Data
The µPD178016GC-051 incorporates an RDS data decoder section. Whether error correction is performed can
be selected. If error correction is performed, the number of correction bits can be set to 1 to 5.
The µPD178016GC-051 uses the following eight types of data.
(1) PI (Program Identification)
(2) PS (Program Service Name)
(3) PTY (Program Type)
(4) AF (Alternative Frequency)
(5) EON (Enhanced Other Network)
(6) TP (Traffic Program Identification)
(7) TA (Traffic Announcement Identification)
(8) CT (Clock Time and Data)
3.1.1 PI (Program Identification)
PI is used to identify the program being received.
3.1.2 PS (Program Service Name)
PS is used for PS display on the LCD panel.
When identical PS data is read two or more times, the PS data is confirmed and displayed on the LCD panel.
About five seconds after the completion of tuning, the LCD panel changes to the PS display.
If PS data cannot be read within about five seconds, the LCD panel changes to the PS display at the point where
PS data is read.
Once PS data has been read, if display switching is performed with the DISP key and TP/SK mode is turned on
or off, the most-recently read PS data will be displayed about five seconds later, even if no other PS data is
subsequently read.
3.1.3 PTY (Program Type)
PTY is used to identify an alarm and display a program type.
If an alarm is read while the device is tuned to an RDS station, the device is switched to radio mode (if in tape/
CD mode) and the TA/DK pin (pin 18) goes low.
By pressing the PTY key, the program type can be displayed or a search for a given program type can be performed.
(See Section 2.5.3.)
Program types are allocated as follows.
The character string enclosed in parentheses in the program type column is displayed in the 14-segment display
area of the LCD panel when the corresponding program type is selected.
37