Standart HX290U, Service Manual

Page: 8 / 40

Function
LCD segment output
LCD segment output
LCD segment output
LCD segment output
Ground
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
LCD segment output
Key Matrix output
Key Matrix output
Key Matrix output
Key Matrix output
Key Matrix input
Key Matrix input
Key Matrix input
Key Matrix input
A/D reference voltage
A/D converter power supply
Key Matrix input
Squelch level detect
Battery voltage down detect
EEPROM clock
EEPROM data
Wide/Narrow switch (Hi:Narrow)
Unlock detect (Hi:Unlock)
SmarTrunk connection detect
A/D converter ground
Rotary encoder turn detect (interrupt)
Rotary encoder turn direction detect
DCS reception detect (interrupt)
Not used
Not used
LCD backlight
Power down detect (interrupt)
Power supply terminal (+5 V)
DTMF IC power save mode setting output
P.UP/DN
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
E-UP
E-UP
E-UP
E-UP
E-DN
E-DN
E-DN
E-DN
---
---
E-DN
---
---
---
---
---
---
I-UP
---
E-UP
E-UP
---
E-UP
E-UP
E-UP
---
---
---
Initial
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
High
High
High
High
(Low)
(Low)
(Low)
(Low)
---
---
(Low)
(High)
(High)
Low
Low
---
Low
(High)
---
(---)
(---)
(---)
(---)
Low
Low
(High)
---
High
Active
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
High
High
High
High
---
---
High
Low
Low
---
---
---
High
Low
---
---
---
Low
---
High
Low
---
High
In/Out
O
O
O
O
-
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
-
-
I
A/D
A/D
O
I/O
O
I
I
-
INT
I
INT
I
O
O
INT
-
O
Signal Name
SEG05
SEG06
SEG07
SEG08
Vss
SEG09
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
KEYO
KEYO1
KEYO2
KEYO3
KEYi
KEYi1
KEYi2
KEYi3
AVR
AVcc
KEYi4
SQL
LO BATT
EE CLK
EE DAT
W/N
U/L
TRUNK CHK
AVss
ROT INT
ROT TURN
DCS INT
ROT 2
---
ROT3 LAMP
P DOWN INT
Vcc2
DTMF PD
S.PD
---
---
---
N-OD
---
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
N-OD
---
---
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
---
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
---
CMOS
S.I/O
O
O
O
I/O
sys
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
sys
sys
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
sys
I/O,INT
I/O,INT
I/O,INT
I/O,INT
I/O,INT
I/O,INT
I/O,INT
sys
I/O,INT
Port Name
SEG05
SEG06
SEG07
P50/SEG08
Vss
P51/SEG09
P52/SEG10
P53/SEG11
P54/SEG12
P55/SEG13
P56/SEG14
P57/SEG15
P60/SEG16
P61/SEG17
P62/SEG18
P63/SEG19
P64/SEG20
P65/SEG21
P66/SEG22
P67/SEG23
P70/SEG24
P71/SEG25
P72/SEG26
P73/SEG27
P74/SEG28
P75/SEG29
P76/SEG30
P77/SEG31
AVR
AVcc
P07/AN7
P06/AN6
P05/AN5
P04/AN4
P03/AN3
P02/AN2
P01/AN1
P00/AN0
AVss
P17/INT17
P16/INT16
P15/INT15
P14/INT14
P13/INT13
P12/INT12
P11/INT11
Vcc2
P10/INT10
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
7
2.4 Control Block
2.4.1 Microprocessor QL02
The functions of the In / Out ports of microprocessor QL02 are listed below.
Table 2-1