Panasonic CQ-RX400U, Service Manual

Page: 5 / 37

5
4 Technical Descriptions
4.1. Terminals Description
4.1.1. Main Block
IC601 : YESAM463
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 Not connected - - - -
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 I 0 0 0
7 EVENT Hub event detection 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
(RX200U: 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 Not connected - 0 0 0
19 USB RESET Not connected - 0 0 0
20 NC Not connected - - - -
21 SYSID1 Hub connection device ID
1 I 5.0 5.0 5.0
22 SYSID2 Hub connection device ID
2 I 5.0 5.0 5.0
23 USB MUTE Not connected - 0 0 0
24 CDC DATA Serial data from CD
changer I 0 0 0
25 CDC CLK/
SYSID3
Serial clock for CD
changer; or Hub connec-
tion device ID 3 I 0 0 0
26 CD DI (CD SI) Serial data to CD O 0 0 3.0
27 CD DO (CD
SO)
Serial data from CD I 3.2 3.2 2.2
28 CD CLK Serial clock for CD O 0 0 3.0
29 CD CE (FS) Chip enable for CD O 0 0 0.9
30 NC Not connected - - - -
31 NC Not connected - - - -
32 NC Not connected - - - -
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) O 0 0 0
46 HUB CNT Hub connection check
request O 4.9 4.9 4.9
47 USB ENBL Not connected - 0 0 0
48 USB SLP Not connected - 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 signal
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 - - - -
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 - - - -
61 NC Not connected - - - -
62 SUB CLK
OUT
Not connected - 0 0 0
63 NC Not connected - - - -
64 BEEP Beep tone O 0 0 0
65 USB IN Not connected - 0 0 0
66 ACC ACC level detection I 5.2 5.2 5.2
67 NC Not connected - - - -
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(NC)
Not connected - - - -
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(NC)
Not connected - - - -
74 CDC REM
OUT
Remote control for CD
changer O 0 0 0
75 HUB-TX Transmission data to Hub O 0 0 0
76 HUB-RX Reception data from Hub I 0 0 0
77 USB RXD Not connected - 0 0 0
78 USB TXD Not connected - 0 0 0
79 FM MODE Power supply control for
FM mode O 4.9 0 0
80 AM MODE Power supply control for
AM mode O 0 4.9 0
81 MONO(NC) Not connected - - - -
82 ST FM stereo indication I 5.1 5.1 5.1
83 DI/DO Serial data for EEPROM I/O 0 0 0
84 CS Chip select for EEPROM O 0 0 0
85 SK Serial clock for EEPROM O 0 0 0
86 NC Not connected - - - -
87 VREG Connected to capacitor - 3.0 3.0 3.0
88 VSS Ground - 0 0 0
89 VDD (PLL) +5V power supply - 5.0 5.0 5.0
90 OSC FM/AM FM/AM local oscillation
frequency I 1.4 1.4 1.4
91 NC Ground - 0 0 0
92 FM/AM IFC FM/AM center frequency I 0 0 0
93 NC Ground - 0 0 0
Pin
No
Port Description I/O Vol [V]
FM AM CD