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参数资料
| 型号： | D1723GF |
| 厂商： | NEC Corp. |
| 英文描述： | PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LF TUNER CAR AUDIO |
| 中文描述： | 锁相环频率合成器和控制器的调频/中波/低频调谐器汽车音响 |
| 文件页数： | 32/80页 |
| 文件大小： | 1590K |
| 代理商： | D1723GF |
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32
μ
PD1723GF-013,
μ
PD1723GF-213
1.4.3
Momentary Keys
Function
Symbol
In the radio mode, these keys are used to call and write preset memory. In the tape mode,
these are used as tape function keys by initialize diode (ENTPK, KAMS, KNR, KMTL).
Radio mode
Preset memory call and write keys.
One key can memorize the FM1, FM2, FM3, VF, MW1, MW2, and LW bands independently
(max. 6 bands).
The following operations are performed according to the state of M2S of the initialize
diodes:
M2S
ME
Description
The device is placed into the 5 seconds preset memory write mode by pressing the
key during frequency display. When one of the keys
to
is pressed during this 5 seconds, the current receiving frequency is
written to the preset memory corresponding to the pressed key.
When the
key is held down, writing is not performed. During writing,
radio muting is not output.
Example
M1
(TP1)
M6
ME
M1
(TP1)
M2
(TP2)
M3
(TP3)
M4
M5
M6
When the same preset memory key is pressed while the current preset memory contents
are being received, the same operation is performed.
In the radio mode, when the device is in the memory unwritable state, when one of the
to
keys is pressed, the preset memory contents corre-
sponding to the pressed key can be called.
Example
M1
(TP1)
M6
50
ms
RDMUTE Pin
Output
40
ms
B
E
E
P
375 to 500 ms
Display Example
MI
(TP1)
ch1
When the same preset memory key is pressed while the current preset memory contents
are being received, no operation is performed. However, if the clock is being displayed,
BEEP is output and the display switches to frequency display. Radio muting is not output.
C
0
W
ch1
ch
Key Operation
ME
B
E
E
P
B
E
E
P
50
ms
40
ms
Within 5 sec.
50
ms
40
ms
ME
Key ON
Key OFF
MI
(TP1)
RDMUTE Pin
Output
Display
Example
Flash
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