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參數(shù)資料
| 型號(hào)： | UPD1723GF-013 |
| 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)： | 18/80頁 |
| 文件大?。?/td> | 1590K |
| 代理商： | UPD1723GF-013 |
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18
μ
PD1723GF-013,
μ
PD1723GF-213
1.4
DESCRIPTION OF KEY MATRIX
1.4.1
Initialize Diode Matrix
The initialize diode matrix contains the switches shown below. These switches are read only when power
is applied to the V
DD
pin for the first time (power ON reset) and when the CE pin changed from low level to high
level (CE reset). Otherwise, they are ignored.
(1) Receiving area setting switches
AREA1, AREA2, AREA3
(2) Receiving band setting switches
DISFM3, ENMW2, DISLW
(3) Auto memory setting switch
DISAMEMO
(4) IF counter setting switches
ENFMIF, DISAMIF
(5) Preset memory operation setting switch
M2S
(6) Tuning operation setting switch
AUTO500
(7) Display priority setting switches
PRIO1, PRIO2
(8) Radio ON/OFF method setting switch
RDON
(9) Clock function setting switches
NOCLK, CLKDISP, FLASH
(10) Tape function setting switches
ENTPK, KAMS, KNR, KMTL, ENNR2
(11) Muting output setting switch
MUTESEL
(12) Local operation setting switch
AUTOLOCK
Set these switches by shorting them with a diode on the matrix or leave them open. In the following text,
1 signifies shorting by diode and 0 signifies leaving open.
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