PD17012GF-058_15 Datasheet, PDF (32/94 Pages) Renesas Technology Corp – PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LW TUNER (AUTOMOBILE APPLICATION)

µPD17012GF-058
Momentary key
Description
DISP
The DISP key is used to switch the display. It is effective when NOCLK initial setting diode = 0 (with a
clock).
Display switching occurs as follows:
(1) In radio mode
Each time the key is pressed, the display switches between the frequency and clock.
The DISP key is ineffective during seek-scanning and auto-preset scanning.
The operation depends on the states of the PRIO1 and PRIO2 initial setting diodes as follows:
Privileged
PRIO1 PRIO2
display
Description
0
0
None Each time the DISP key is pressed, the display switches between
the frequency and clock.
1
0 Frequency Pressing the DISP key during frequency display causes the clock
display display to appear for 5 seconds. Pressing the DISP key during the
5-second period of clock display causes the frequency display to
appear again.
0
1
Clock Pressing the DISP key during clock display causes the frequency
display display to appear for 5 seconds. Pressing the DISP key during the
5-second period of frequency display causes the clock display to
appear again.
(1: Shorted by the diode; 0: Open)
When radio mode is selected, the display begins with the frequency.
(2) In tape mode
Each time the DISP key is pressed, the display switches between “ ” and the clock.
The operation depends on the states of the PRIO1 and PRIO2 initial setting diodes as follows:
Privileged
PRIO1 PRIO2
display
Description
0
0
None Each time the DISP key is pressed, the display switches between
the frequency and clock.
1
0
“ ” Pressing the DISP key during “ ” display causes the clock
display display to appear for 5 seconds. Pressing the DISP key during the
5-second period of clock display causes the “ ” display to
appear again.
0
1
Clock Pressing the DISP key during clock display causes the “ ”
display display to appear for 5 seconds. Pressing the DISP key during the
5-second period of “ ” display causes the clock display to
appear again.
(1: Shorted by the diode; 0: Open)
When radio mode is selected, the display begins with the “
” display.
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