Technical Descriptions - Panasonic CQ-C3405U Service Manual

4 Technical Descriptions

4.1. Terminals Description
4.1.1. Main Block
IC601 : YESAM389
Pin Port Description
No
1 DBGP0 Not connected
2 DBGP1 Not connected
3 DBGP2 Not connected
4 RDS CLK Not connected
5 RM DATA Remote control data
6 CDC STB/ CD changer Strobe; or
SYSID4 Hub connection device
identification 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
(13.5MHz)
13 CF2 Ceramic oscillator 2
(13.5MHz)
14 VDD +5V power supply
15 INT A Pulled up for CQ-C3405U;
Pulled down for CQ-
C3305U
16 VSM Signal meter intensity
(Tuner)
17 INT B Pulled down to GND
18 LEVEL Audio level detection from
Audio signal processor
19 INT C Not connected
20 ACC ACC level detection
21 SYSID1 Hub connection device
identification 1
22 SYSID2 Hub connection device
identification 2
23 N.C. Not connected
24 CDC DATA Serial data from CD
changer
25 CDC CLK/ Serial clock for CD
SYSID3 changer; or Hub connec-
tion device identification 3
26 CD DI (CD Serial data from CD
SI)
27 CD DO (CD Serial data to CD
SO)
28 CD CLK Serial clock for CD
29 CD CE (FS) CD chip enable
30 CD MUTE CD mute
31 CD RESET CD reset
32 POWER System power supply con-
CNT trol
33 SUB Sub ready from CD servo
READY
34 REG Reg. ready from CD servo
READY
35 CD SW1 CD detection switch 1
36 CD SW2 CD detection switch 2
37 CD MUTE Mute for Pick-up driver
38 CD S/L Sleding/Loading mode
switch
39 VSS Ground
Pin
No
I/O Vol [V]
FM AM CD
- - - -
- - - -
- - - -
- - - -
I 4.8 4.8 4.8
I 0 0 0
I 0 0 0
I 4.8 4.8 4.8
I 1.0 1.0 1.0
O 1.4 1.4 1.4
- 0 0 0
I 1.4 1.4 1.4
O 1.3 1.3 1.3
- 5.0 5.0 5.0
I 5.0 5.0 5.0
I 0.2 0 0.2
- 0 0 0
I 0 0 0.3
- - - -
I 5.0 5.0 5.0
I 4.9 4.9 4.9
I 4.9 4.9 4.9
- - - -
I 0 0 0
I 0 0 0
I 0 0 4.8
O 5.0 5.0 3.5
O 4.7 4.7 4.7
O 0 0 1.6
I 0.2 0.2 5.0
O 4.8 4.8 4.8
O 5.0 5.0 5.0
I 5.0 5.0 4.7
I 5.0 5.0 0
I 0 0 0
I 0 0 0
O 0 0 5.0
O 5.0 5.0 5.0
- 0 0 0
5
Port Description
40 VDD +5V power supply
41 CD ERROR CD error status
42 CD LIMIT CD limit detection switch
SW
43 CD EM Ejecting mode for Sled
motor
44 CD LM Loading mode for Sled
motor
45 HUB ACC Power supply control for
CNT Hub (CD changer)
46 HUB CNT Hub connection check
request
47 INV CNT Not connected
48 USB CNT Not connected
49 LCD DI Serial data to LCD
50 LCD DO Serial data from LCD
51 LCD CLK Serial clock for LCD
52 LCD CE Chip enable for LCD CPU
53 E-VOL I2C Serial data for Audio sig-
DATA nal processor (volume)
54 E-VOL I2C Serial data for Audio sig-
CLK nal processor
55 VDD +5V power supply
56 VSS Ground
57 E-VOL LV Serial clock to Audio sig-
CLK nal processor (Audio level)
58 E-VOL LV Serial data from Audio sig-
DATA nal processor (Audio level)
59 STBY Standby mode for Power
amplifier
60 SRS MODE Not connected
1
61 SRS MODE Not connected
2
62 SRS MODE Not connected
3
63 SRS Not connected
FOCUS
ELVL
64 EJ ILL Ejection key illumination
control
65 PANEL IN Front panel detection
66 LCD 5V +5V power supply control
CNT for LCD circuit
67 N.C. Not connected
68 EJECT Ejection switch
69 BATT Battery level detection
70 EXT MUTE Telephone mute
71 OP/CL Open/Close detection for
Front panel
72 MODE B Rotary encoder detection
(ROTARY B for volume
2)
73 MODE A Rotary encoder detection
(ROTARY A for volume
1)
74 CDC REM Remote control for CD
OUT changer
75 HUB-TX Transmission data to Hub
76 HUB-RX Reception data from Hub
77 USB TX Not connected
78 USB RX Not connected
79 FM MODE Power supply control for
FM mode
80 AM MODE Power supply control for
AM mode
81 MONO Not connected
82 ST FM stereo indication
I/O Vol [V]
FM AM CD
- 5.0 5.0 5.0
I 0 0 0
I 5.0 5.0 5.0
O 0 0 0
O 0 0 0
O 0 0 0
O 5.0 5.0 5.0
- - - -
- - - -
O 4.8 4.8 4.8
I 4.8 4.8 4.8
O 5.0 5.0 5.0
O 0 0 0
O 5.0 5.0 5.0
O 5.0 5.0 5.0
- 5.0 5.0 5.0
- 0 0 0
O 0 0 0
I 0 0 0
O 5.0 5.0 5.0
- - - -
- - - -
- - - -
- - - -
O 5.0 5.0 5.0
I 0 0 0
O 0 0 0
- - - -
I 5.0 5.0 5.0
I 5.0 5.0 5.0
I 5.0 5.0 5.0
I 4.8 4.8 4.8
I 0 0 0
I 5.0 5.0 5.0
O 0 0 0
O 0 0 0
I 0 0 0
- - - -
- - - -
O 5.0 0 5.0
O 0 5.0 0
- 0 0 0
I 5.0 5.0 5.0