PD17012GF-058_15 Datasheet, PDF (40/94 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
Pressing the MAN DWN key works for each electronic volume control mode as follows:
Mode
Volume
Function
Decreases the main sound volume.
Bass Decreases the bass.
Treble Decreases the treble.
Balance Emphasizes the sound volume from the left-side speaker.
Fader Emphasizes the sound volume from the rear speaker.
MONO/LOC
The MONO/LOC key controls MONO (monaural)/STEREO mode and local (local/DX) mode.
(1) Monaural mode control
When this key is pressed and held down for two seconds or more, MONO and STEREO modes can be
switched.
The key is effective, when the current mode is radio, radio-monitor CD, or radio-monitor tape mode and
the FM or MW band is selected. (For the MW band, the key is effective if the MWS initial setting diode
= 1 and the tuner has a stereo capability.)
Each time the key is pressed, switching occurs between MONO and STEREO modes.
The following table lists MONO/STEREO mode and the states of the “ST” display and “MONO” display.
MONO/
STEREO mode
“ST” display
“MONO” display
MONO
Does not light
Lights
STEREO
Lights
Does not light
MTL
(2) Local mode control
The key is effective when the current mode is radio, radio-monitor CD, or radio-monitor tape mode and
when AUTOLOC initial setting diode = 0.
Each time the key is pressed, switching occurs between local and DX modes (only when the key is
released within two seconds).
The following table lists local/DX mode, the state of the “LOC” display, and LOC pin output.
Local/DX mode
LOCAL
DX
“LOC” display
Lights
Does not light
LOC pin
High level^Note
Low level
Note A high level is output only during auto-tuning. The LOC pin is always at a low level during a tuning
type other than auto-tuning.
See the description of the LOC in Chapter 1.
The MTL key controls MTL (METAL) mode. It is effective when the current mode is radio or radio-
monitor tape mode. Each time the key is pressed, METAL mode is switched on or off.
The following table lists METAL mode on/off, the states of the “METAL” display, and METAL pin
output.
METAL mode “METAL” display METAL pin
ON
OFF
Lights
Does not light
High level
Low level
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