PD17012GF-058_15 Datasheet, PDF (39/94 Pages) Renesas Technology Corp – PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LW TUNER (AUTOMOBILE APPLICATION)

µPD17012GF-058
Momentary key
Description
MAN UP
MAN DWN
The MAN UP and MAN DWN keys are used to increment and decrement the reception frequency in
radio mode, respectively. During clock display, they are also used in connection with the DISP key to
adjust the clock. They are again used to increase/decrease the volume of sound during electronic volume
control if VKYSEL = 1.
(1) In radio, radio-monitor tape, and radio-monitor CD modes
Either of the following operations occurs depending on the state of the AUTO500 initial setting diode.
AUTO500
Description
0
Each time the MAN UP or MAN DWN key is pressed, the frequency counter is
incremented ( MAN UP key) or decremented ( MAN DWN key) by one step (one
channel space).
Keeping the key pressed for at least 0.5 seconds speeds the increment/decrement to a
rate of one step per 50 ms.
1
Each time the MAN UP or MAN DWN key is pressed, the frequency counter is
incremented ( MAN UP key) or decremented ( MAN DWN key) by one step (one
channel space).
Keeping the MAN UP key pressed for at least 0.5 seconds triggers a seek operation in
seek-up mode. This seek operation is the same as that triggered by the SEEK UP
key.
(1: Shorted by the diode; 0: Open)
(2) While “ ” is displayed in tape mode or “ ” is displayed in CD mode
The MAN UP and MAN DWN keys are ineffective.
(3) During clock display
While the DISP key is held pressed during clock display, pressing the MAN UP and MAN DWN
keys enables adjusting the minute and hour displays, respectively. See the description of the DISP
key for how to adjust the minute and hour displays.
(4) When the electronic volume control function is effective and VKYSEL = 1:
The MAN UP and MAN DWN keys are used to adjust (increase and decrease) the volume of sound
in the electronic volume control mode selected using the VOL SEL key.
Once an electronic volume control mode is selected using the VOL SEL key, the MAN UP and
MAN DWN keys function in the same way as the VOL UP and VOL DWN keys.
In a mode other than an electronic volume control mode, the MAN UP or MAN DWN key does not
function as a volume control.
Pressing the MAN UP key works for each electronic volume control mode as follows:
Mode
Volume
Bass
Treble
Balance
Fader
Function
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.
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