Panasonic CQ-TX5500W, Service Manual

Page: 7 / 49

9.1. Main Block
IC601 : C2DBKJ000103
Pin
No.
Port Description Volt.(V)
I / O FM AM CD
1 NC - - - - -
2 NC - - - - -
3 TSO CD text BUS data
input I 0 0 3.2
4 TSI CD text BUS data
output O 0.7 0.6 0
5 TSCK CD text BUS clock
output O 5.1 5.1 5.1
6 EVDD +5V power supply - 5.2 5.2 5.2
7 EVSS GND - 0 0 0
8 CH1 REM Changer remote-
control signal O 5.2 5.2 5.2
9 SYS PWR System power control
signal I 5.2 5.2 5.1
10 REMO Remote control signal I 4.7 4.7 4.7
11 NC - - - - -
12 LCD SO LCD driver data input I 5 5 5
13 LCD SI LCD driver data
output O 0 0 0
14 LCD CLK LCD driver BUS clock
output O 5.1 5.1 5.1
15 LCD CE LCD driver BUS chip
enable output O 0 0 0
16 METER SW Analog meter select
switch signal
O 5.2 5.2 5.2
17 BEEP Beep control signal O 0 0 0
18 VPP High voltage for
program - 0 0 0
19 EN A VOL key-in detection
signal A O 0 5 0
20 EN B VOL key-in detection
signal B O 0 5 0
21 VOL DATA Electronic volume
serial data output O 5.2 5.2 5.2
22 VOL CLK Electronic volume
serial clock output O 5.2 5.2 5.2
23 VOL CE Electronic volume
chip enable output O 0 0 0
24 NC - - - - -
25 AMP MUTE AMP power mute
control signal
O 0 0 0
26 SYS MUTE Audio mute control
signal
O 5.2 5.2 5.2
27 AMP CNT External AMP power
control signal O 5.2 5.2 5.2
28 MAIN CNT Internal AMP power
control signal O 5.2 5.2 5.2
29 VALVE LED Valve LED power
control signal
O 5.2 5.2 5.2
30 FRAM CS F-RAM chip select
output O 5.2 5.2 5.2
31 RESET System reset Input - 5.2 5.2 5.2
32 SUB X1 Connecting to GND. I 0 0 0
33 NC - - - - -
34 REGC Capacitor connection
for regulator - 3.4 3.4 3.4
35 X2 Main system clock
oscillator - 1.5 1.5 1.5
36 X1 Main system clock
oscillator - 1.5 1.5 1.5
37 VSS GND - 0 0 0
38 VDD5V +5V power supply - 5 5 5
39 CLK OUT Internal system clock
output - 0 0 0
40 FRAM DI F-RAM data input I 0 0 0.5
Pin
No.
Port Description Volt.(V)
I / O FM AM CD
41 FRAM DO F-RAM data output O 0 0 0
42 FRAM CLK F-RAM clock output O 0 0 0
43 LED
METER LED meter control
signal O 5.2 5.2 5.2
44 CD EJECT
LED CD EJ LED control
signal O 0 0 5.2
45 SOURCE
LED SOURCE LED
control signal O 5.2 5.2 5.2
46 KEY LED KEY LED control
signal O 5.2 5.2 5.2
47 NC - - - - -
48 NC - - - - -
49 NAVI MUTE Navi mute signal I 5.2 5.2 5.2
50 ILL Illumination power
detect signal I 5.2 5.2 5.2
51 METER
MUTE Analog meter mute
signal O 5.2 5.2 5.2
52 FRAM WP F-RAM write protect
signal O 5.2 5.3 5.3
53 FRAM
HOLD F-RAM hold signal O 0 0 0
54 NC Connecting to GND. - 0 0 0
55 BVDD +5V power supply - 5.2 5.2 5.2
56 BVSS GND - 0 0 0
57 NC Connecting to GND. I 0 0 0
58 NC Connecting to GND. I 0 0 0
59 NC Connecting to GND. I 0 0 0
60 MAIN PWR Main power control
signal
O 5.2 5.2 5.2
61 NC - - - - -
62 TWIN CH
CNT Twin changer select
control signal O 5.2 5.2 5.2
63 TSTB CD text strobe output O 0.9 0 0
64 ANT CNT Antenna control
signal O 5.2 5.2 0
65 PLL CE PLL IC BUS chip
enable output O 0 0 0
66 PLL DI PLL IC BUS data
output O 0 0 0
67 PLL CLK PLL IC BUS clock
output O 0 0 0
68 PLL DO PLL IC BUS data
input I 5.1 5.1 5.1
69 DIV CNT Diversity ANT select
control signal O 0 5.2 5.2
70 LED
DIMMER
CNT LED Dimmer power
control signal O 0 0 0
71 AVDD +5V power supply - 5.3 5.3 5.3
72 AVSS GND - 0 0 0
73 AVREF A/D converter
reference voltage - 5 5 5
74 VSM Tuner signal strength
detect signal I 0.5 0.5 0
75 INITIAL1 Connecting to GND. I 0 0 0
76 INITIAL2 Connecting to GND. I 0 0 0
77 NC Connecting to GND. I 0 0 0
78 COVER_SE
NSE Cover sense signal I 5 5 4.9
79 NC Connecting to GND. I 0 0 0
80 NC Connecting to GND. I 0 0 0
81 NC Connecting to GND. I 0 0 0
82 NC Connecting to GND. I 0 0 0
83 DIAG - I 5.3 5.3 5.3
84 ST IND FM stereo signal I 0 1.9 0
85 CH1 SENS Twin changer adaptor
detect signal I 4.9 4.9 4.9
9 TERMINALS DESCRIPTION
7
CQ-TX5500W