PD17012GF-058_15 Datasheet, PDF (34/94 Pages) Renesas Technology Corp – PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LW TUNER (AUTOMOBILE APPLICATION)

µPD17012GF-058
Momentary key
Description
DISP
(5) In radio-monitor CD mode
Each time the DISP key is pressed, the display switches among “ ”, frequency, and 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 is toggled as
follows:
" " frequency
clock
1
0
“”
Each time the DISP key is pressed, the display is toggled as
display follows:
" " frequency
clock
If no key is pressed during frequency or clock display, the “ ”
display appears again after 5 seconds.
0
1
Clock Each time the DISP key is pressed, the display is toggled as
display follows:
" " frequency
clock
If no key is pressed during frequency or “ ” display, the clock
display appears again after 5 seconds.
(1: Shorted by the diode; 0: Open)
When radio-monitor CD mode is selected, the display begins with the frequency.
(6) During clock display
The DISP key is used to adjust the clock.
The minute and hour displays are adjusted by pressing the MAN UP and MAN DWN keys with the
DISP key held pressed, as follows:
Hour adjustment
Each time the MAN DWN key is pressed, the hour display is incremented by one. Keeping the
key pressed for at least 0.5 seconds increments the hour display at a rate of four per second (one
per 250 ms). The continuous increment continues until the key is released. The minute display,
second count, or pointer movement is not affected.
Minute adjustment
Each time the MAN UP key is pressed, the minute display is incremented by one. Keeping the
key pressed for at least 0.5 seconds increments the minute display at a rate of eight per second
(one per 125 ms). The continuous increment continues until the key is released. No carry-over
occurs to the hour display. The second count is reset to 0 at each adjustment.
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