CQ-RX300N, CQ-RX200N, CQ-RX103N, CQ-RX102N, CQ-RX101N - Panasonic Car Audio Service Manual (repair manual). Page 5

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5
4 Technical Descriptions
4.1.
Terminals Description
4.1.1.
Main Block
IC601 : YESAM433
Pin 
No
Port
Description
I/O
Vol [V]
FM
AM
CD
1
DBGP0
Not  used
-
0
0
0
2
DBGP1
Not  used
-
0
0
0
3
DBGP2
Not  used
-
0
0
0
4
RDS CLK
RDS (Radio Data Sys-
tem) clock
I
2.5
2.5
2.5
5
RM DATA
Remote control data
I
4.6
4.6
4.6
6
CDC STB/
SYSID4
CD changer Strobe; or 
Hub connection device ID 
4 (RX200N/RX300N)
I
0
0
0
7
EVENT
Hub event detection 
(RX200N/RX300N)
I
0
0
0
8
RESET
System reset
I
4.9
4.9
4.9
9
XT1
Crystal oscillator 1 
(32.768kHz)
I
1.0
1.0
1.0
10 XT2
Crystal oscillator 2 
(32.768kHz)
O
1.4
1.4
1.4
11 VSS
Ground
-
0
0
0
12 CF1
Ceramic oscillator 1 
(13.50MHz)
I
1.4
1.4
1.4
13 CF2
Ceramic oscillator 2 
(13.50MHz)
O
1.3
1.3
1.3
14 VDD
+5V power supply
-
5.0
5.0
5.0
15 INI A
Initialization mode A 
(RX200N: Pulled up; Oth-
ers Pulled down)
I
4.9
4.9
4.9
16 VSM
Signal meter intensity 
(Tuner)
I
0
0
0
17 INI B
Initialization mode B 
(Pulled down)
I
0
0
0
18 USB FLG
Thermal shutdown flag 
from USB regulator 
(RX300N)
I
0
0
0
19 USB RESET
USB reset (RX300N)
O
0
0
0
20 NC
Not connected
-
0
0
0
21 SYSID1
Hub connection device ID 
1 (RX200N/RX300N)
I
5.0
5.0
5.0
22 SYSID2
Hub connection device ID 
2 (RX200N/RX300N)
I
5.0
5.0
5.0
23 USB MUTE
USB mute (RX300N)
O
0
0
0
24 CDC DATA
Serial data from CD 
changer (RX200N/
RX300N)
I
0
0
0
25 CDC CLK/
SYSID3
Serial clock for CD 
changer; or Hub connec-
tion device ID 3 (RX200N/
RX300N)
I
0
0
0
26 CD DI (CD SI) Serial data to CD and USB 
(USB: RX300N)
O
0
0
3.0
27 CD DO (CD 
SO)
Serial data from CD and 
USB (USB: RX300N)
I
3.2
3.2
2.2
28 CD CLK
Serial clock for CD and 
USB (USB: RX300N)
O
0
0
3.0
29 CD CE (FS)
Chip enable for CD and 
USB (USB: RX300N)
O
0
0
0.9
30 NC
Not connected
-
0
0
0
31 NC
Not connected
-
0
0
0
32 NC
Not connected
-
0
0
0
33 SUB READY0 Sub ready from CD servo
I
5.1
5.1
4.9
34 REG READY0 Reg. ready from CD servo
I
5.1
5.1
0
35 CD SW1
CD detection switch 1
I
4.9
4.9
4.9
36 CD SW2
CD detection switch 2
I
4.9
4.9
4.9
37 CD DMUTE
CD mute
I
0
0
5.1
38 CD LIMIT SW CD limit detection switch
I
5.1
5.1
5.1
39 VSS
Ground
-
0
0
0
40 VDD
+5V power supply
-
4.9
4.9
4.9
41 CD MUTE
Mute for Pick-up driver
O
0
0
0
42 CD S/L
CD Sleding/Loading mode 
switch
O
4.9
4.9
4.9
43 CD F/R
CD loading direction: For-
ward/Reverse
O
0
0
0
44 CD RESET
CD reset
O
4.9
4.9
4.9
45 HUB ACC 
CNT
Power supply control for 
Hub (External device) 
(RX200N/RX300N)
O
0
0
0
46 HUB CNT
Hub connection check 
request (RX200N/
RX300N)
O
4.9
4.9
4.9
47 USB ENBL
USB enable (RX300N)
O
0
0
0
48 USB SLP
USB sleep (RX300N)
O
0
0
0
49 LCD DI
Serial data to LCD
O
4.9
4.9
4.9
50 LCD DO
Serial data from LCD
I
4.3
4.3
4.3
51 LCD CLK
Serial clock for LCD
O
4.9
4.9
4.9
52 LCD CE
Chip enable for LCD CPU
O
0
0
0
53 E-VOL I2C 
DATA
Serial data for Audio sig-
nal processor (volume)
O
4.9
4.9
4.9
54 E-VOL I2C 
CLK
Serial clock for Audio sig-
nal processor
O
4.9
4.9
4.9
55 VDD
+5V power supply
-
4.9
4.9
4.9
56 VSS
Ground
-
0
0
0
57 E-VOL MUTE Not connected
-
0
0
0
58 POWER CNT System power supply con-
trol
O
4.9
4.9
4.9
59 STBY
Standby mode for Power 
amplifier
O
4.9
4.9
4.9
60 NC
Not connected
-
0
0
0
61 NC
Not connected
-
0
0
0
62 SUB CLK 
OUT
Not connected
-
0
0
0
63 NC
Not connected
-
0
0
0
64 BEEP
Beep tone (RX200N/
RX300N)
O
0
0
0
65 USB IN
USB-in detection 
(RX300N)
I
0
0
0
66 ACC
ACC level detection
I
5.2
5.2
5.2
67 NC
Not connected
-
0
0
0
68 MODE B
Rotary encoder detection 
B for volume
I
5.0
5.0
5.0
69 MODE A
Rotary encoder detection 
A for volume
I
5.0
5.0
5.0
70 EXT MUTE
Not connected
-
0
0
0
71 PANEL IN
Front panel detection
I
4.9
4.9
4.9
72 BATT
Battery level detection
I
4.6
4.6
4.6
73 RDS DATA
RDS (Radio Data Sys-
tem) data
I
2.5
0
0
74 CDC REM 
OUT
Remote control for CD 
changer (RX200N/
RX300N)
O
0
0
0
75 HUB-TX
Transmission data to Hub 
(RX200N/RX300N)
O
0
0
0
76 HUB-RX
Reception data from Hub 
(RX200N/RX300N)
I
0
0
0
77 USB RXD
Serial data to USB 
(RX300N)
O
0
0
0
78 USB TXD
Serial data from USB 
(RX300N)
I
0
0
0
79 FM MODE
Power supply control for 
FM mode
O
4.9
0
0
Pin 
No
Port
Description
I/O
Vol [V]
FM
AM
CD
Display
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