XL-505/505C,CP-505B
– 34 –
IC701 RH-iX0189AWZZ:System Microcomputer (IX0189AW) (1/2)
1-4
COM3-COM0
Output
LCD COMMON output terminal
5-7
VLC3-VLC1
—
LCD power terminal
8
VDD
—
Microcomputer power 5V.
9
OSC2
Output
Main clock oscillator connection terminal f=8MHz
10
OSC1
Input
Main clock oscillator connection terminal f=8MHz
11
VSS
—
Microcomputer power supply GND
12
XI
Input
Sub-clock oscillator connection terminal f=32.768kHz
13
XO
Output
Sub-clock oscillator connection terminal f=32.768kHz
14
MMOD
Input
Memory mode selection terminal
15
VREF-
—
Power supply for AD converter GND
16
KEY0 AN0/PA0
Input
Destination detection input this terminal serves as an A/D input port.
When resetting is performed, the destination setting is detected based on the DC voltage.
17
KEY1 AN0/PA1
Input
Operation key input, max. 8 keys
18
KEY2 AN0/PA2
Input
Operation key input, max. 8 keys
19
KEY3 AN0/PA3
Input
POWER key input detection
20*
KEY4 AN0/PA4
Input
Tuner signal meter (S meter) voltage input terminal
IX0189AW: Unused terminal (regular input port)
21
KEY5 AN0/PA5
Input
Cassette tape erroneous erasing preventing lug detection input
H: Record inhibited
L: Record enable
22
KEY6 AN0/PA6
Input
Tape run/END detection input If pulse input is detected, it is judged that the tape is running.
23
KEY7 AN7/PA7
Input
Cassette mechanism operation status detection input
H: Mechanism stop
L: Mechanism in operation
24
VREF+
—
A/D converter power 5V
25
TXD SBO0/P00
Output
Terminal to output data to TUNER PLL IC
26
RXD SBI0/P01
Input
Data input from TUNER PLL IC
27
SBT0/P02
Output
TUNER PLL IC sync clock output
28
SBO1/P03
Output
Terminal to output data to VOL IC
29
SBI1/P04
Output
VOL IC chip enable output
"L"=OFF
"H"=ON
30
SBT1/P05
Output
VOL IC sync clock output
31
DK/BZER P06
Output
TUNER PLL IC enable output
"L"=OFF
"H"=ON
32
RST/P27
Input
RESET signal input
33*
RMOUT P10
—
Unused terminal
34
P11
Output
Power mute output
"H"=MUTE OFF
"L"=MUTE ON
35
TM2IO P12
Output
Power amplifier operation control output
H: Amplifier operation ON
L: Amplifier operation OFF
36
TM3IO P13
Output
CD servo power circuit control output
H: CD power ON
L: CD power OFF
37
TM4IO P14
Input
Function setting input
Reset mode: H: 4-step selection
L: 3-step selection
38
IRQ0 P20
Input
Power failure detection input L: Change to HALT mode
39
SENS IRQ1/P21
Input
Remote controller signal input
40*
IRQ2 P22
Input
RDS IC sync clock input
41
IRQ3 P23
Input
Radio stereo broadcast reception detection input
L: Stereo broadcast reception
42
IRQ4 P24
Input
Broadcast reception status detection input
L: Broadcast wave reception
43*
P30
Input
RDS signal reception status detection
H: RDS not received
L: RDS received
44*
P31
Input
Data input from RDS IC
45
P32
Output
LC78623E RESET signal output
46
LED0 WE/P50
Output
TC9284F chip enable terminal
L: BUS terminal active
47
LED1 RE/P51
Output
TC9284F data sync clock output
48
LED2 CS/P52
Output
TUNER mute output
"H"=MUTE ON
"L"=MUTE OFF
49*
LED3/S51 A16/P53
Output
IND LED control output (when SRS2 is on)
H: LED goes out
L: LED lights
50*
LED4/S50 A17/P54
Output
IND LED control output (when SRS1 is on)
H: LED goes out
L: LED lights
51
SEG49 P60/A0
Output
Cassette mechanism solenoid drive control output
52
SEG48 P61/A1
Output
Cassette mechanism motor drive control output
FUNCTION TABLE OF IC
Pin No.
Function
Terminal Name Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
