Technical Descriptions - Panasonic CQ-RXBT490U Service Manual

4 Technical Descriptions

Terminals Description
4.1.
4.1.1. Main Block
IC601:C2CBYY001238
PIN Port Description
No.
1 N.C. Not connected.
2 AMP_STB Amp standtby signal.
3 N.C. Not connected.
4 N.C. Not connected.
5 N.C. Not connected.
6 N.C. Not connected.
7 TEST
8 RESET Reset signal input.
9 N.C. Not connected.
10 VREG Bypass condenser con-
nected.
11 VSS1 GND
12 XT1 Main Crystal 1
(32.768KHz) connected.
13 XT2 Main Crystal 2
(32.768KHz) connected.
14 VDD_CPU VDD(3.3V)
15 INIT_A Initial distribution setup_A
16 INIT_B Initial distribution setup_B
17 INIT_C Initial distribution setup_C
18 INIT_D Initial distribution setup_D
19 INIT_E Initial distribution setup_E
20 VBUS_DET V-BUS(4.75V/2~5.25V/2)
ECT
21 N.C. Not connected.
22 N.C. Not connected.
23 N.C. Not connected.
24 N.C. Not connected.
25 N.C. Not connected.
26 N.C. Not connected.
27 N.C. Not connected.
28 N.C. Not connected.
29 N.C. Not connected.
30 POWER_C Power IC control signal
NT output.
31 N.C. Not connected.
32 N.C. Not connected.
33 CD_SW1 CD insert detection SW 1.
34 CD_SW2 CD Mechanism SW 2.
35 CD_MUTE CD DSP driver IC mute
control signal.
36 CD_LIMIT_ CD limit detection SW.
SW
37 MODE_A Rotary clock signal A out-
put.
38 MODE_B Rotary clock signal B out-
put.
39 E- Electronic Vol-IC commu-
VOL_I2C_S nication.
CK
40 E- Electronic Vol-IC commu-
VOL_I2C_S nication.
DA
41 N.C. Not connected.
42 CD_DMUT CD motor driver IC action
E control signal.
43 CD_S/L CD connected detection.
44 N.C. Not connected.
45 VDDPORT VDD
1
46 VSS GND
47 CD_LM+ CD eject control signal.
48 CD_LM- CD loading control signal.
49 LCD_CLK LCD clock signal output.
50 LCD_DO LCD data output.
51 LCD_DI LCD data input.
52 EJ_ILL CD slot illumination
I/O FM(V) CD(V) USB(V)
O 0 0 0
O 3.31 3.31 3.31
O 0 0 0
O 0 0 0
O 0 0 0
O 0 0 0
- 0 0 0
I 3.94 3.95 3.93
O 0 0 0
- 3.30 3.30 3.30
- 0 0 0
I 1.30 1.30 1.29
O 1.71 1.71 1.70
- 3.30 3.31 3.30
I 2.73 2.73 2.73
I 0 0 0
I 0 0 0
I 3.30 3.30 3.30
I 3.30 3.30 3.30
I 2.62 2.63 2.62
O 0 0 0
O 0 0 0
O 0 0 0
O 0 0 0
O 0 0 0
O 0 0 0
O 0 0 0
O 0 0 0
O 0 0 0
O 4.68 4.69 4.68
O 0 0 0
O 0 0 0
I 4.70 0 0
I 4.70 0 0
I 0 3.13 3.10
I 3.14 3.13 3.11
I 0 4.47 4.46
I 4.46 4.47 4.46
O 4.72 4.74 4.72
I/O 4.72 4.74 4.72
O 0 0 0
O 0 4.73 0
O 4.72 4.74 4.71
O 0 0 0
- 4.72 4.73 4.71
- 0 0 0
O 0 0 0
O 0 0 0
O 4.67 4.68 4.66
I 4.77 4.78 4.77
O 4.62 4.63 4.62
O 4.72 4.73 4.71
5
PIN Port Description
No.
53 LCD_CE LCD chip enable control
signal output.
54 REMO_IN Remote signal input.
55 iPOD_CNT USB iPod communication
request signal output.
56 PWR_LED POWER_LED control sig-
nal output.
57 N.C. Not connected.
58 DSP_PRES DSP reset control signal
ET output.
59 DSP_CE DSP chip enable control
signal output.
60 DSP_BUSY DSP busy control signal
B input.
61 OSCCTL12 DSP standby control
mode.
62 OSCCTL13 DSP standby control
mode.
63 DSP_CMD DSP command control
data output.
64 DSP_DATA DSP control data signal
input.
65 DSP_CL DSP clock control signal
output.
66 USB_IN USB device connection
signal detection input.
67 BEEP Beep sound control signal
output.
68 CMD_ERR DSP Error.
69 iPOD_TX_ iPod control data received
UART input.
70 iPOD_RX_ iPod control data send
UART output.
71 OPEN/ Panel flip down sensor
CLOSE
72 EJ_KEY Eject button
73 BATT Battery power connected
signal detection.
74 ACC ACC power detection.
75 BT_TX BT data received input.
76 BT_RX BT data send output.
77 N.C. Not connected.
78 BT_RESET BT module reset signal
output.
79 VDDPORT VDD
2
80 VSS3 GND
81 RADIO_CL Radio Tuner clock control
K signal output.
82 RADIO_DA Radio Tuner data control
TA signal input/output.
83 N.C. Not connected.
84 EXT_ROM I2C clock output for stor-
_I2C_SCK ing last settings.
85 EXT_ROM I2C data input/output for
_I2C_SDA storing last settings.
86 N.C. Not connected.
87 SXI_TX SXI data received input
88 SXI_RX SXI data send output
89 RADIO_MO Radio power control signal
DE output.
90 SXI_PWR_ SXI Power control signal
EN output.
91 SXI_PWR_ SXI Power control signal
CNT output.
92 N.C. Not connection.
93 USB_FLG USB power current over-
load protection signal
input.
94 USB_ENBL USB V-BUS on/off control
signal output.
95 ANT_CNT ANTcontrol signal output.
96 VDDPLL VDD
97 VSS4 GND
98 LPF0
99 AF_MUTE AF MUTE control signal
input.
100 AMP_MUT AMP_MUTE control signal
E output.
I/O FM(V) CD(V) USB(V)
O 0 0 0
I 4.67 4.69 4.67
O 4.70 4.72 4.69
O 0 0 0
O 0 0 0
O 4.72 4.73 4.71
O 0 2.31 2.30
I 3.13 2.91 2.92
O 0 0 0
O 0 0 0
O 4.72 4.23 4.22
I 0 2.24 1.96
O 4.72 4.71 4.69
I 0 0 3.10
O 0 0 0
I/O 0 0 0
I 2.98 2.98 2.95
O 0 0 0
I 0 4.55 4.53
I 4.27 4.27 4.27
I 4.55 4.55 4.53
I 4.89 4.90 4.89
I 3.32 3.33 3.33
O 4.35 4.36 4.36
O 0 0 0
O 4.60 4.61 4.60
- 4.72 4.74 4.72
- 0 0 0
O 4.59 0 0
I/O 4.53 0 0
O 0 0 0
O 4.72 4.74 4.72
I/O 4.72 4.73 4.72
O 0 0 0
I 0 4.99 4.99
O 4.72 4.74 4.72
O 0 0 0
O 4.72 4.74 4.72
O 4.70 4.71 4.69
O 0 0 0
I 5.17 5.18 5.17
O 4.70 4.72 4.70
O 4.69 4.72 4.69
- 3.31 3.32 3.31
- 0 0 0
- 1.14 1.14 1.14
O 0 0 0
O 3.31 3.32 3.31