CIRCUIT DESCRIPTION
Pin
No.
Pin Name
I/O
Description
1
V3.SW1
O
VCR IC3 (NJU2279D) switch1 port
2
V2.B
O
VCR IC2 (TC4052BP) B port
3
V2.A
O
VCR IC2 (TC4052BP) A port
4
V1.C
O
VCR IC1 (TC4051BP) C port
5
V1.B
O
VCR IC1 (TC4051BP) B port
6
V1.A
O
VCR IC1 (TC4051BP) A port
7
S.DATA
I/O
Serial communication data
8
S.BUSY
I/O
Serial communication busy
9
VSS
GND
10
X2
Main system clock (4.15MHz)
11
X1
I
Main system clock (4.15MHz)
12
VDD
Power supply (+5V)
13
XT2
Sub system clock (32.768KHz)
14
XT1
I
Sub system clock (32.768KHz)
15
RESET
I
System reset
16
CE
I
Chip enable
17
R.DATA
I/O
Repeater data
18
I
Not used
19
P.LOCK
I
RF unit lock signal
20
POWER.LED
O
Power LED
21
STANDBY.LED
O
Standby LED
22
RDS.CK
I
Not used
23
AVDD
A/D converter analog power supply (+5V)
24
AVREF0
A/D converter base voltage (GND)
25
RDS.SL
I
Not used
26
RDS.NL
I
Not used
27
P.SDT
O
RF unit PLL IC (LMX1511TMX) data
28
P.SCK
O
RF unit PLL IC (LMX1511TMX) clock
29
P.SLE
O
RF unit PLL IC (LMX1511TMX) load enable data
RF unit lock signal
H : ACTIVE
LCD controller hook check
H : NONE
L : HOOK
RF unit oscillator enable
H : ACTIVE
VSS (GND)
RF unit receive enable
L : ACTIVE
RF unit transmit enable
L : ACTIVE
D/A converter base voltage VDD (+5V)
RF unit roam
¸
controller receive data
RF unit controller
¸
roam transmit data
39
P.RF
O
RF unit RF powe
H : ACTIVE
40
VSS
–
GND
41
S.DT
I
Main & sub U-COM communication sub U-COM transmit data
42
M.DT
O
Main & sub U-COM communication main U-COM transmit data
43
M.CK
O
Main & sub U-COM communication main U-COM clock
44
M.RQ
O
Main & sub U-COM communication main U-COM request
45
S.RQ
I
Main & sub U-COM communication sub U-COM request
46
PRE2.MUTE
O
Preout 2 mute
47
MUTE
O
Mute (Preout 1 mute)
1-2. Pin description
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