PD178016GC-051_15 Datasheet, PDF (31/96 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
Momentary key
Description
PTY
This key is used to display and search for a program based on a PTY (program type) from among the RDS
data.
This key is valid while an FM band station is being received in radio mode and when the TP/SK key is off.
While a program type is being displayed, or while a search is being made for a program type, LCD indicator
“PTY” appears.
Pressing this key once, while the device is tuned to an RDS station, causes the current program type to be
displayed. If the station currently being received is other than an RDS station, symbol “NONE” appears in
the LCD indicator, indicating that the program does not have a program type.
A program type is displayed for five seconds after the key has been pressed. Within those five seconds,
each time the key is pressed, the program type is switched. The displayed program type changes as follows
each time this key is pressed. If the key is pressed for 0.5 seconds or longer while a PTY is displayed, the
display changes every 300 ms.
When the desired program type is displayed, pressing either the UP or DOWN key during the five
seconds the program type is displayed instigates a search of the entire band for an RDS station broadcast-
ing a program of that program type. When a corresponding station is detected, the PTY display is automati-
cally cleared.
PTY code 0 PTY code 1 PTY code 2
“NONE”
“NEWS” “AFFAIRES”
PTY code 16
“OTHER M”
If the UP , DOWN , or PTY key is not pressed within five seconds while a program type is displayed, the
PTY display is automatically cleared, the “PTY” indicator is turned off, and PS display (or frequency display)
is performed.
The PTY display is cleared when the system is started by pressing the POWER key.
RANDOM/AMS
This key is used as an AMS ON/OFF setting key in tape mode.
If this key is held down for at least two seconds in CD changer mode, it can be used as a disc random mode
ON/OFF setting key. If the key is released within two seconds, it is used as a random mode ON/OFF setting
key.
(1) AMS ON/OFF setting
This key is used as an AMS (Auto Music Search) control key.
Each time this key is pressed, AMS is alternately turned ON/OFF.
While AMS is ON, LCD indicator “AMS” appears.
(2) Disc random mode ON/OFF setting
Each time this key is pressed, the disc random mode is turned ON/OFF.
During disk random mode operation, LCD indicators “RANDOM” and “ALL” appear.
(3) Random mode ON/OFF setting
Each time this key is pressed, the random mode is alternately turned ON/OFF.
During random mode operation, LCD indicator “RANDOM” appears.
In the initial state after the power is first applied, random mode and disc random mode are turned OFF.
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