PD17012GF-058_15 Datasheet, PDF (53/94 Pages) Renesas Technology Corp – PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LW TUNER (AUTOMOBILE APPLICATION)

µPD17012GF-058
Momentary key
Description
VOL UP
The VOL UP key is used to adjust the volume of sound in each electronic volume control mode. The
operation depends on the state of the VKYSEL initial setting diode.
VKYSEL
Description
0
Pressing the VOL UP key in a mode other than an electronic volume control mode
selects volume mode and increases the volume of sound.
In an electronic volume control mode selected by the VOL SEL key, pressing the
VOL UP key activates the operation corresponding to the selected mode as follows:
Mode
Function
Volume
Bass
Treble
Balance
Fader
Increases the main sound volume.
Increases the bass.
Increases the treble.
Emphasizes the sound volume from the right-side speaker.
Emphasizes the sound volume from the front speaker.
Keeping the VOL UP key pressed for at least 0.5 seconds controls the volume continu-
ously.
If no key is pressed for at least 3 seconds, the mode previous to the current electronic
volume control mode is reselected.
1
The VOL UP key is ineffective. After an electronic volume control mode is selected
using the VOL SEL key, the MAN UP key can be used to perform the same adjust-
ment that would be performed using the VOL UP key.
Pressing the MAN UP key in a mode other than an electronic volume control mode
does not select volume mode. See the descriptions of the MAN UP and MAN DWN
keys for details.
(1: Shorted by the diode; 0: Open)
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