參數(shù)資料
型號(hào)： UPD178024GC-051-8BT
廠商： NEC Corp.
元件分類： 通用總線功能
英文描述： 8-BIT SINGLE-CHIP MICROCONTROLLER WITH ON-CHIP PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO WITH CD PLAYER
中文描述： 8位單片機(jī)具有片上標(biāo)器，鎖相環(huán)頻率合成器，如柜臺(tái)，汽車調(diào)頻/中波/龍運(yùn)收音機(jī)帶CD播放器
文件頁(yè)數(shù)： 29/98頁(yè)
文件大?。?/td> 467K
代理商： UPD178024GC-051-8BT
Data Sheet U14608EJ1V0DS00
29
μ
PD178024GC-051
Momentary Key
Function
This key controls the forced monaural status of the radio.
It is valid when the FM band is being received in the radio mode.
Each time this key is pressed, the forced monaural status is turned on or off.
The forced monaural status and the output of the MONO pin (forced monaural signal), as well as the
“ST” display, which indicates the forced monaural off status, and the “ ” display, which indicates
reception of stereo broadcasting are as follows:
Forced Monaural MONO Pin
“ST” Display
“ ” Display
On
1
Goes off
Goes off regardless of stereo
broadcasting reception status
Off
0
Lights while FM band is being
received, and goes off at all
other times
Depends on reception band and
stereo broadcasting reception
status.
For details, refer to “6.3 Display on
LCD Panel”.
MONO
(0: Low level, 1: High level)
MUTE
This key controls the forced mute status.
It is valid in the power-on status.
However, it is invalid if telephone mute is turned on by the PMUTE pin (pin 47).
Each time this key is pressed, the forced mute status is turned on or off.
The forced mute status is also cleared by operating another valid key.
When power is turned on, this key restores the forced mute status when power was turned OFF last.
The default forced mute status is off on power application.
NEXT/FF
PREV/REW
These keys increment/decrement and fast-forward/rewind the tracks of the CD, and
increment/decrement the selection of the program.
They are valid in the CD mode.
Even in the CD mode, these keys are also used to adjust the clock if the DISP key is also pressed at
the same time during clock display. For how to adjust the clock, refer to the description of the
DISP key.
The operation of these keys differs as follows, depending on the status of the program.
(1) While program is being edited
If these keys are pressed while a program is being edited, the music to be selected as the program
contents is incremented ( NEXT/FF key) or decremented ( PREV/REW key) by one.
The operation does not differ regardless of the time for which the key is pressed. While the program is
being edited, fast-forward/rewind cannot be performed.
For program playback, refer to “4.2 Program Playback”.
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