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| 型號： | UPD178024GC-051-8BT |
| 廠商： | NEC Corp. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-BIT SINGLE-CHIP MICROCONTROLLER WITH ON-CHIP PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO WITH CD PLAYER |
| 中文描述： | 8位單片機具有片上標(biāo)器，鎖相環(huán)頻率合成器，如柜臺，汽車調(diào)頻/中波/龍運收音機帶CD播放器 |
| 文件頁數(shù)： | 20/98頁 |
| 文件大?。?/td> | 467K |
| 代理商： | UPD178024GC-051-8BT |
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Data Sheet U14608EJ1V0DS00
20
μ
PD178024GC-051
Initialization Switch
Function
This switch sets the intermediate frequency range in which a station is detected in the AM band (MW,
LW) of the radio.
Set this switch as follows:
AMIF
Band
Intermediate Frequency
MW
+450 kHz
±
3 kHz
0
LW
+450 kHz
±
0.5 kHz
MW
1
LW
+10.7 MHz
±
20 kHz
AMIF
(0: Pull down, 1: Pull up)
Regardless of the setting of AMIF, convert the frequency into 450 kHz and input this frequency to the
FMIFC and AMIFC pins.
These switches specify the region for which the set is intended.
Set these switches as follows:
AREA2
AREA1
Region
0
0
Western Europe
0
1
Eastern Europe
1
1
USA 1
1
0
USA 2
AREA1
AREA2
(0: Pull down, 1: Pull up)
Depending on the region specified, the reception band of the radio, reception frequency, and initial value
of the preset memory differ. For details, refer to “3. RADIO FUNCTIONS”.
This switch specifies the 12-hour or 24-hour mode of the clock.
Set this switch as follows:
CLK12
Display Mode of Clock
0
24-hour mode
1
12-hour mode (with “AM” and “PM” indication)
CLK12
(0: Pull down, 1: Pull up)
This switch is used to specify whether an intermediate frequency is used for detection of a broadcasting
station during auto tuning of the AM band (MW, LW) of the radio.
Set this switch as follows:
DISAMIFC
AM Band Station Detection Mode
0
Intermediate frequency is identified (identification by S meter and intermediate
frequency).
1
Intermediate frequency is not identified (identification by S meter).
DISAMIFC
(0: Pull down, 1: Pull up)
This switch specifies whether an equalizer IC (TA2078P) is used or not.
Set this switch as follows:
EQICSEL
Equalizer IC
0
Equalizer IC is not used (equalizer processing by electronic volume).
1
Equalizer IC is used (equalizer processing by equalizer IC).
EQICSEL
(0: Pull down, 1: Pull up)
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