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6-6. IC PIN FUNCTION DESCRIPTION
• IC501 MASTER U-COM (MN101C12GTA1/MN101C12GTB)
Pin No.
1
AVREF-
–
Basic voltage (- side) of AD conversion input
2
VSM
I
FM/AM common signal meter A/D conversion input terminal
3
KEYIN1
I
4
KEYIN0
I
5
DBAS IN
I
Position detecting AD input terminal of D-BASS
6
DSTSEL
I
Terminal for setting to select the value of destination
7
FUNC-SEL
I
Function selecting (AD conversion) input
8
NCO
O
Not used
9
RCIN0
I
Rotary commander (AD conversion) input
10
AVREF+
I
Basic voltage (+side) of AD conversion input
11
VDD
–
Power supply
12
OSC OUT
–
13
OSC IN
–
14
GND
–
Ground
15
XT IN
–
16
XT OUT
–
17
GND
–
Ground
18
RCIN1
I
Rotary commander shift input
19
SYSRST
O
SYSTEM RESET control output
20
BUSON
O
BUS ON control output
21
UNISO
O
Serial data output
22
UNISI
I
Serial data input
23
UNICKO
O
Serial clock output
24
UNICKI
I
Serial clock input
25
NCO
O
Not used
26
KEYACK
I
Key input acknowledge
27
NOSESW
I
Removing/attaching front panel detection input
28
BU_IN
I
BACK-UP detection input terminal
29
SIRCS
I
Remote control input
30
TELMUT
I
TELEPHONE MUTE detection input
31
TESTIN
I
Test mode setting input terminal
32
RAMBU
I
Reset detection input of RAM
33
RESET
I
Reset input terminal
34
VOLMUT
O
Not used
35
BEEP
O
Control output for buzzer
36
AMPMUT
O
Power amplifier mute control output terminal
37
AMPON
O
Power amplifier STANDBY control terminal
38
PLLCKD
O
PLL CLK output terminal
39
PLLCE
O
PLL CE output terminal
40
PLLSO
O
PLL DATA output terminal
41
PLLSI
I
PLL DATA input terminal
42
LCDSD
O
LCD serial data output
43
LCDCE
O
LCD chip enable output terminal
44
LCDCKD
O
LCD serial clock output
45
VOLSO
O
Electrical volume serial data output
46
NCO
O
Not used
47
VOLCKO
O
Electrical volume serial data output
48
ACCIN
I
Accessory power supply detection input
49
MUT
O
System MUTE control output
Pin Name
I/O
Function
KEY (AD conversion) input
Radiator (18.432 MHz) connecting terminal
Sub clock (for clock) radiator (32 kHz) connecting terminal
