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(yè)數(shù)： 49/80頁(yè)
文件大?。?/td> 1590K
代理商： UPD1723GF-213
49
μ
PD1723GF-013,
μ
PD1723GF-213
Function
Symbol
In the radio mode, this key is used as the LOCAL (LOCAL/DX) control key. In the tape mode,
this key is used as the tape function key by initialize diode.
Radio mode
This key is valid only when initialize diode AUTOLOC switch = 0.
Each time this key is pressed, the LCD panel “LOC” display and the LOC pin (pin 10) output
are inverted. High level is output from the LOC pin while “LOC” is displayed.
The FM, MW, and LW bands common VF band is the same as the FM band.
When the power is turned on, the OFF state (“LOC” display off, LOC pin low level) is set.
Tape mode
When the initialize diode ENTPK switch is 1, this key is used as the AMS, NR (NOISE
REDUCTION), or MTL (METAL) function key. For whether the AMS, NR, or MTL function
is selected, see the initialize diode KAMS, KNR and KMTL switches above.
When the AMS, MTL, or NR function key is selected, operation is the same as
the
,
, and
keys. See the description of each
key.
In the radio mode, this key is used as the MONO (MONORAL) control key. In the tape
mode, this key is used as the tape function key by initialize diode.
Radio mode
This key is valid only in FM and VF bands.
Each time this key is pressed, the LCD panel “MONO” display and the MONO/NR
2
pin (pin
18) output the inverted. High level is output from the MONO/NR
2
pin while “MONO” is
displayed.
When the power is turned on, the OFF state is set (“MONO” display OFF, MONO/NR
2
pin
Low level).
Tape mode
This key can be used as the AMS, MTL, or NR function key by initialize diode ENTPK,
KAMS, KNR, and KMTL switches.
See the ENTPK, KAMS, and KMTL switches items.
When the AMS or MTL function is selected, this key operates the same as the
,
or
key. See the description of each key.
In the radio monitor and DK ON modes, this key operates as the MONO control key.
MTL (METAL) control key.
This key is valid in the tape mode.
Each time this key is pressed, the LCD panel “MTL” display and the MTL pin (pin 21) output
are inverted.
High level is output from the LOC/MTL pin while “MTL” is displayed.
When the power is turned on, the OFF state is set (“MTL” display OFF, MTL pin Low level).
AMS
MTL
NR
MTL
MONO
(TP5)
LOC
(TP4)
MTL
AMS
NR
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