參數(shù)資料
型號(hào): UPD1723GF-213
廠商: NEC Corp.
英文描述: PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LF TUNER CAR AUDIO
中文描述: 鎖相環(huán)頻率合成器和控制器的調(diào)頻/中波/低頻調(diào)諧器汽車音響
文件頁數(shù): 21/80頁
文件大?。?/td> 1590K
代理商: UPD1723GF-213
21
μ
PD1723GF-013,
μ
PD1723GF-213
Symbol
Function
Local function setting switch.
Its settings are shown below.
Local Function
AUTOLOC
LOCAL ON/OFF by key input.
Each time the
key pressed, the “LOC” display is inverted.
LOCAL output outputs high level only during autotuning (SEEK, SCAN, AMEMO).
Auto local.
The
key is invalid.
When autotuning is selected by
,
,
,
,
keys, the “LOC” display lights and the LOCAL
output becomes high and autotuning is performed.
When autotuning is performed for one cycle, the device searches in the DX mode
(“LOC” display OFF, LOCAL output = Low).
However, the device enters the LOCAL1, LOCAL2 or DX mode only during auto
memory operation.
At other than autotuning, the “LOC” display goes off and the LOCAL output
becomes low.
If the same key (
key for the seek-up operation, etc.) is pressed
during autotuning, if the device is in the LOCAL mode, it searches in the DX mode,
beginning from the frequency at which autotuning started. If the device is in the DX
mode, autotuning stops.
When AUTO500 switch is set to “1” (autotuning by pressing
or
key for 0.5 second) when auto local is used, the following opera-
tions are performed:
Auto local search (LOCAL) mode is performed by pressing the
or
key for more than 0.5 seconds.
When the
or
key is pressed again during LOCAL
search and the 2nd DX search, autotuning stops.
LOC
LOC
SEEK DWN
SEEK UP
AMEMO
SEEK DWN
SEEK UP
MAN DWN
MAN UP
MAN DWN
MAN DWN
MAN UP
0
AUTOLOC
1
SEEK UP
MAN UP
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