PD17012GF-058_15 Datasheet, PDF (51/94 Pages) Renesas Technology Corp – PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LW TUNER (AUTOMOBILE APPLICATION)

µPD17012GF-058
Momentary key
SEEK UP
Description
Key
Description
LOUD/
ILLUMI-
NATION
POWER
The seek operation continues, and the operation corresponding to the pressed key
begins.
MONO/LOC
Either of the following operations occurs depending on the state of the AUTOLOC
initial setting diode.
(1) When AUTOLOC = 0:
The seek operation continues, and the operation corresponding to the key
begins.
(2) When AUTOLOC = 1:
The seek operation continues, and the pressed key becomes invalid.
M1
The seek operation stops. The set tunes itself to the frequency recorded in the
to
preset memory corresponding to the pressed key.
M6
VOL DWN
The VOL DWN 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 DWN 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 DWN key activates the operation corresponding to the selected mode as follows:
Mode
Function
Volume
Bass
Treble
Balance
Fader
Decreases the main sound volume.
Decreases the bass.
Decreases the treble.
Emphasizes the sound volume from the left-side speaker.
Emphasizes the sound volume from the rear speaker.
Keeping the VOL DWN key pressed for at least 0.5 seconds controls the volume
continuously.
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 DWN key is ineffective. After an electronic volume control mode is selected
using the VOL SEL key, the MAN DWN key can be used to perform the same
adjustment that would be performed using the VOL DWN key.
Pressing the MAN DWN 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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