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參數(shù)資料
| 型號： | UPD1723GF-011-3BE |
| 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頻/中波/低頻調諧器汽車音響 |
| 文件頁數(shù)： | 31/80頁 |
| 文件大小： | 1590K |
| 代理商： | UPD1723GF-011-3BE |
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31
μ
PD1723GF-013,
μ
PD1723GF-213
1.4.2
Alternate or Transistor Switch
Function
Symbol
CD mode setting switch.
This switch is valid only when the CE pin is high level.
The CD mode can be set by setting this switch to ON.
For details, see
2 “Mode Transition”.
Tape mode setting switch.
This switch is valid only when the CE pin is high level.
When this switch is set to ON when the CSDSET is OFF, the device is set to the tape mode.
For details, see
2 “Mode Transition”.
Radio mode setting switch.
This switch is valid only when the CE pin is high level.
When this switch is set to ON when the CDSET and TPSET switches are OFF, the device is
set to the radio mode.
For details, see
2 “Mode Transition”.
When using this switch, set the RDON switch (diode matrix) to 0.
Tape mode fast forward signal input switch.
The tape fast forward display (
RL switch.
) lights as shown below according to the state of the
CDSET
TPSET
RDSET
FF
RL
0
1
0
1
0
1
Display
: Light OFF,
0: OFF, 1: ON
: : Light ON, : Flash (2 Hz)
VF broadcast station SK signal input switch.
When this switch is set to ON on the FM and VF bands, the LCD panel “SK” display lights.
On the FM and VF bands, this signal is also used as the auto tuning stop signal. At this time,
250 to 375 ms after the broadcast station is judged to be present by IF and SD pin, this switch
is checked and if it is ON, a traffic information station is judged to be present and autotuning
stops.
Tape mode travel direction signal input switch.
The tape travel display (
contents, see the FF switch above.
) lights according to the state of the FF switch. For the lighting
VF broadcast station DK signal input switch.
When this switch is set to ON in the tape DK standby and CD DK standby modes, the device
enters the tape DK ON and CD DK ON mode.
FF
SK
RL
DK
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