PD178016GC-051_15 Datasheet, PDF (52/96 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
• Operation when TP = TA = 1 (or when both the SK and DK pins are low)
• In radio mode
The SK MUTE pin (pin 19) is driven high.
The TA/DK pin (pin 18) is driven low.
• In CD changer/tape mode
Radio mode is selected.
• Common
If the volume is less than the initial value, it is automatically changed to the initial value.
• Operation when TA = 1 (ON)
The RDS station having the PI (ON) code is searched in RDS memory and received.
If TP = TA = 1 cannot be read within four seconds of the station being received, the original station is restored and
received.
Operation when TP = TA = 1 is read from an RDS station with PI (ON)
• In radio mode
The SK MUTE pin is driven high.
The TA/DK pin is driven low.
• In CD changer/tape mode
Radio mode is selected.
• Common
If the volume is less than the initial value, it is automatically changed to the initial value.
(2) Traffic information reception → traffic information standby
The state is changed from traffic information reception to traffic information standby if both TP and TA are not
1, or if TP and TA cannot be decoded for 30 seconds.
The original station is received if the traffic information reception state is set with TA = 1 (ON).
• In radio mode
The SK MUTE pin is driven low.
The TA/DK pin is driven high.
• In CD changer/tape mode
The original sound is restored.
• Common
If the volume was automatically changed when the traffic information was received, it is restored to its original
level.
If the volume was changed manually, however, it is not restored to its original level.
3.1.11 CT (Clock Time and Data)
CT is used to adjust the clock.
The time transmitted by a broadcast is the Coordinated Universal Time (UTC) as specified in the CCIR
recommendations. It is converted to the local time before being used as clock data.
By inputting time announcement information, the internal clock of the µPD178016GC-051 is corrected using the
broadcast time information.
When initial setting diode CTADJ is set to 1, the clock is constantly being corrected by the input of broadcast time
information. Whenever the clock is corrected, the seconds are reset to zero.
Note that correction is made based on the broadcast time information, even when the clock is being adjusted using
the time adjustment keys.
Whether to enable adjustment of the clock using the time adjustment keys is specified using initial setting diodes
NOCLK and CTADJ.
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