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