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RM-G45PA
10 Terminal Function of IC
10.1. IC503(000874710):
System Control
Pin
Terminal
I/O
No.
Name
1
AN15
I
2
ACC OUT
O
3
BUS ACC
O
4
AV
-
SS
5
BUS RST
O
6
CCB CE
O
7
AVREF1
I
8
CCB DI
I
9
CCB DO
O
10
CCB CL
O
11
BUS SI
I
12
BUS SO
O
13
BUS SCK
O
14
BUS C/D
O
15
BUS CS
O
16
DISP REQ
-
17
DISP SO
O
18
DISP SCK
O
19
DISP CE
O
20
KS1
|
|
O
25
KS6
26
KS7
-
27
K11
|
|
I
30
K14
31
MODE D
I
32
MODE U
I
33
V
-
SS
34
V MODE D
I
35
V MODE U
I
36
CB H/S
O
37
AU H/S
O
38
NC
-
39
AMB1
O
40
AMB
O
41
MUTE
O
42
AMPON SP
O
43
AMPON HS
O
44
SW5V
O
45
ATT
O
46
AMP MUTE
O
47
I-COM
O
48
IEV DO
O
49
IEV CL
O
50
BEEP
O
51
HS MUTE
O
52
CB SI
I
53
CB SO
O
54
NC
-
55
CB PERM
O
56
CB DET
I
Function
Request signal input
Power supply control signal output
System power supply control signal output
GND
Reset signal output
Chip enable signal output
Not used, connected to V
DD
Data signal input
Data signal output
Clock signal output
Serial data input
Serial data output
Serial clock signal output
Command data signal output
Chip select signal output
Not used, connected to GND via resistor
Serial data output for LCD
Serial clock output for LCD
Chip enable output for LCD
Key source signal output
Not used
Key return signal input
Mode switch signal input
Mode switch signal input
GND
V mode switch signal input
V mode switch signal input
CB sound select signal output
Audio sound select signal output
Not used
AMB control signal output
AMB ON/OFF signal output
Audio mute signal output
Power amp ON/OFF control signal output
for speaker
Power amp ON/OFF control signal output
for headphone
Power supply control signal output
Audio attenuator ON/OFF control signal
output
Power amp mute control signal output for
speaker
Power supply control signal output for
INTERCOM interrupt mute
Electric volume data output for INTERCOM
microphone volume control and mute
Electric volume clock output for
INTERCOM microphone volume control
and mute
Beep signal output
Power amp mute control signal output for
headset
Serial data input from CB
Serial data output for CB
Not used, open
key data output request terminal
CB connecting detect signal input
Pin
Terminal
I/O
No.
Name
57
CB AU
I
CB audio mute signal input
MUTE
58
CB PTT
O
CB PTT signal output
59
MUTE IN
I
Mute key ON/OFF detect signal input
60
RESET
I
System reset signal input
61
SPEED
I
Speed pulse signal input
62
BUS IRQ
I
Interrupt request signal input
63
ACC IN
I
ACC ON/OFF signal input
64
CB SCK
I
Serial clock signal input
65
INTP4
-
Not used, open
66
INTP5
-
Not used, open
67
V
0
-
GND
SS
68
V
1
I
Power supply terminal
DD
69
X2
O
Crystal oscillator connected terminal
(F=5 MHz)
70
X1
I
71
IC
-
Connected to V
72
XT2
-
Not used, open
73
XT1
-
Connected to V
74
AV
0
I
Power supply terminal
DD
75
AVREF0
I
Reference voltage input
76
S METER
I
S meter voltage input
77
FANCAD
I
Key detect signal input
78
MODEAD
I
Mode detect signal input
79
AN13
-
Not used, open
80
AN14
-
Not used, open
32
Function
SS
SS
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