參數(shù)資料
型號(hào)： UPD178024GC-051
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(jī)具有片上標(biāo)器，鎖相環(huán)頻率合成器，如柜臺(tái)，汽車調(diào)頻/中波/龍運(yùn)收音機(jī)帶CD播放器
文件頁(yè)數(shù)： 13/98頁(yè)
文件大小： 467K
代理商： UPD178024GC-051
Data Sheet U14608EJ1V0DS00
13
μ
PD178024GC-051
Pin No.
Symbol
Pin Name
Description
I/O Type
52
DI4/
TRAY REV
Initialization switch
signal input/loading
reverse signal
output
This is a bi-directional pin that inputs an initialization switch signal
and outputs a loading reverse signal to the CD player (CDC-01KG).
It outputs a high level when a disc is loaded or ejected.
This pin functions as an input pin when the initialization switch is
read.
For the initialization switch, refer to “2. KEY MATRIX
CONFIGURATION”.
At all other times, this pin outputs a low level.
CMOS
push-pull
I/O
53
DI5/
STB
Initialization switch
signal input/servo
IC strobe signal
output
This is a bidirectional pin that inputs an initialization switch signal
and outputs a strobe signal to the servo IC (
μ
PD63702) of the CD
player (CDC-01KG).
This pin functions as an input pin when the initialization switch is
read.
For the initialization switch, refer to “2. KEY MATRIX
CONFIGURATION”.
CMOS
push-pull
I/O
54
DI6/
A0
Initialization switch
signal input/servo
IC A0 signal output
This is a bidirectional pin that inputs an initialization switch signal
and outputs an A0 signal to the servo IC (
μ
PD63702) of the CD
player (CDC-01KG).
This pin functions as an input pin when the initialization switch is
read.
For the initialization switch, refer to “2. KEY MATRIX
CONFIGURATION”.
CMOS
push-pull
I/O
55
DI7/
RESET_O
Initialization switch
signal input/servo
IC reset signal
output
This is a bidirectional pin that inputs an initialization switch signal
and outputs an IC reset signal to the servo IC of the CD player
(CDC-01KG).
This pin functions as an input pin when the initialization switch is
read.
For the initialization switch, refer to “2. KEY MATRIX
CONFIGURATION”.
CMOS
push-pull
I/O
56
DI8/
LD_ON
Initialization switch
signal input/laser
diode lighting signal
output
This is a bidirectional pin that inputs an initialization switch signal
and outputs a laser diode lighting signal to the RF amplifier of the
CD player (CDC-01KG).
This pin outputs a high level when the laser diode lights.
This pin functions as an input pin when the initialization switch is
read.
For the initialization switch, refer to “2. KEY MATRIX
CONFIGURATION”.
At all other times, this pin outputs a low level.
CMOS
push-pull
I/O
This pin inputs an RFOK signal from the RF amplifier of the CD
player (CDC-01KG).
Pull up this pin externally.
Input a signal to this pin as follows:
RFOK Pin
Description
0
RFOK not detected
1
RFOK detected
57
RFOK
RFOK signal input
(0: Low level, 1: High level)
Input
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