Technical Descriptions - Panasonic CQ-RX400N Service Manual

4 Technical Descriptions

4.1. Terminals Description
4.1.1. Main Block
IC601 : YESAM462
Pin Port Description
No
1 DBGP0 Not used
2 DBGP1 Not used
3 DBGP2 Not used
4 RDS CLK RDS (Radio Data System)
clock
5 RM DATA Remote control data
6 CDC STB/ CD changer Strobe; or Hub
SYSID4 connection device ID 4
7 EVENT Hub event detection
8 RESET System reset
9 XT1 Crystal oscillator 1
(32.768kHz)
10 XT2 Crystal oscillator 2
(32.768kHz)
11 VSS Ground
12 CF1 Ceramic oscillator 1
(13.50MHz)
13 CF2 Ceramic oscillator 2
(13.50MHz)
14 VDD +5V power supply
15 INI A Initialization mode A Pulled
down
16 VSM Signal meter intensity
(Tuner)
17 INI B Initialization mode B (Pulled
down)
18 USB FLG Thermal shutdown flag
from USB regulator
19 USB RESET USB reset
20 NC Not connected
21 SYSID1 Hub connection device ID 1
22 SYSID2 Hub connection device ID 2
23 USB MUTE USB mute
24 CDC DATA Serial data from CD
changer
25 CDC CLK/ Hub connection device ID 3
SYSID3
26 CD DI (CD Serial data to CD and USB
SI)
27 CD DO (CD Serial data from CD and
SO) USB
28 CD CLK Serial clock for CD and
USB
29 CD CE (FS) Chip enable for CD and
USB
30 NC Not connected
31 NC Not connected
32 NC Not connected
33 SUB Sub ready from CD servo
READY0
34 REG Reg. ready from CD servo
READY0
35 CD SW1 CD detection switch 1
36 CD SW2 CD detection switch 2
37 CD DMUTE CD mute
38 CD LIMIT CD limit detection switch
SW
39 VSS Ground
40 VDD +5V power supply
41 CD MUTE Mute for Pick-up driver
Pin
No
42 CD S/L
43 CD F/R
44 CD RESET
45 HUB ACC
I/O Vol [V]
FM AM CD
46 HUB CNT
- 0 0 0
- 0 0 0
47 USB ENBL
- 0 0 0
48 USB SLP
I 2.5 2.5 2.5
49 LCD DI
50 LCD DO
I 4.6 4.6 4.6
51 LCD CLK
I 0 0 0
52 LCD CE
53 E-VOL I2C
I 0 0 0
I 4.9 4.9 4.9
54 E-VOL I2C
I 1.0 1.0 1.0
55 VDD
O 1.4 1.4 1.4
56 VSS
57 E-VOL
- 0 0 0
I 1.4 1.4 1.4
58 POWER
O 1.3 1.3 1.3
59 STBY
- 5.0 5.0 5.0
60 NC
I 4.9 4.9 4.9
61 NC
62 SUB CLK
I 0 0 0
63 NC
I 0 0 0
64 BEEP
65 USB IN
I 0 0 0
66 ACC
67 NC
O 0 0 0
68 MODE B
- - - -
I 5.0 5.0 5.0
69 MODE A
I 5.0 5.0 5.0
O 0 0 0
70 EXT MUTE
I 0 0 0
71 PANEL IN
72 BATT
I 0 0 0
73 RDS DATA
O 0 0 3.0
74 CDC REM
I 3.2 3.2 2.2
75 HUB-TX
76 HUB-RX
O 0 0 3.0
77 USB RXD
78 USB TXD
O 0 0 0.9
79 FM MODE
- - - -
80 AM MODE
- - - -
- - - -
81 MONO
I 5.1 5.1 4.9
82 ST
83 DI/DO
I 5.1 5.1 0
84 CS
85 SK
I 4.9 4.9 4.9
86 NC
I 4.9 4.9 4.9
87 VREG
I 0 0 5.1
88 VSS
I 5.1 5.1 5.1
89 VDD (PLL)
90 OSC FM/AM FM/AM local oscillation fre-
- 0 0 0
- 4.9 4.9 4.9
91 NC
O 0 0 0
5
Port Description
CD Sleding/Loading mode
switch
CD loading direction: For-
ward/Reverse
CD reset
Power supply control for
CNT Hub (External device)
Hub connection check
request
USB enable
USB sleep
Serial data to LCD
Serial data from LCD
Serial clock for LCD
Chip enable for LCD CPU
Serial data for Audio signal
DATA processor (volume)
Serial clock for Audio signal
CLK processor
+5V power supply
Ground
Not connected
MUTE
System power supply con-
CNT trol
Standby mode for Power
amplifier
Not connected
Not connected
Not connected
OUT
Not connected
Beep tone
USB-in detection
ACC level detection
Not connected
Rotary encoder detection B
for volume
Rotary encoder detection A
for volume
Not connected
Front panel detection
Battery level detection
RDS (Radio Data System)
data
Remote control for CD
OUT changer
Transmission data to Hub
Reception data from Hub
Serial data to USB
Serial data from USB
Power supply control for
FM mode
Power supply control for
AM mode
Monaural control
FM stereo indication
Not connected
Not connected
Not connected
Not connected
Connected to capacitor
Ground
+5V power supply
quency
Ground
I/O Vol [V]
FM AM CD
O 4.9 4.9 4.9
O 0 0 0
O 4.9 4.9 4.9
O 0 0 0
O 4.9 4.9 4.9
O 0 0 0
O 0 0 0
O 4.9 4.9 4.9
I 4.3 4.3 4.3
O 4.9 4.9 4.9
O 0 0 0
O 4.9 4.9 4.9
O 4.9 4.9 4.9
- 4.9 4.9 4.9
- 0 0 0
- - - -
O 4.9 4.9 4.9
O 4.9 4.9 4.9
- - - -
- - - -
- 0 0 0
- - - -
O 0 0 0
I 0 0 0
I 5.2 5.2 5.2
- - - -
I 5.0 5.0 5.0
I 5.0 5.0 5.0
- - - -
I 4.9 4.9 4.9
I 4.6 4.6 4.6
I 2.5 0 0
O 0 0 0
O 0 0 0
I 0 0 0
O 0 0 0
I 0 0 0
O 4.9 0 0
O 0 4.9 0
O 0 0 0
I 5.1 5.1 5.1
- - - -
- - - -
- - - -
- - - -
- 3.0 3.0 3.0
- 0 0 0
- 5.0 5.0 5.0
I 1.4 1.4 1.4
- 0 0 0