Panasonic CQ-JA1920L

126 CD SOM CD serial data I 0
127 CD SIM CD serial data O 1.4
128 MD1 (Connecting to VDD) - 5.2
Note 1 : Voltage measuerments are with respect to ground,
with a voltmeter (internal resistance : 10M ohms).
IC901 : C2BBGD000016
Pin
No.
Port Description I/O (V)
1 MSM MS gain control O 0
2,3 - No connection - -
4 VSSI Ground - 0
5 RX0 Communication data I 5.2
6 RX1 (+5V pull-up) - 5.2
7 VDDI +5V power supply - 5.2
8 RDI CAN-BUS data I 4.9
9 SCLK Not used - -
10 TDO CAN-BUS data O 0
11-13 - No connection - -
14 IF+C IF count I 4.8
15 ANT+ Motor antenna control I 0
16 - No connection - -
17 VRL (Connecting to ground) - 0
18 VRH (Connecting to VDD) - 5.2
19 AMP+ Ext. Amp power I 4.9
20 VDD +5V power supply - 5.2
21 +BMONI +B monitor I 3.0
22 SP-L SP Lch level detection I 3.0
23 SP-R SP Rch level detection I 3.1
24 P-ANT Antenna short detection I 1.8
25 - No connection - -
26 CANE (Connecting to VDD) - 5.2
27 VPP (Connecting to VDD) - 5.2
28 OSC1 Crystal oscillator - 1.8
29 OSC2 Crystal oscillator - 2.7
30 /RESET Reset input I 0
31 IRQ (CAN-BUS data) I 4.9
32,33 - No connection - -
34-36 - (Connecting to ground) - 0
37 MODE C Audio mode selection O 4.9
38 MODE B Audio mode selection O 0
39 MODE A Audio mode selection O 0
40 SP CONT Speaker control O 0
41 WAKE OUT CAN BUS request O 5.2
42 PA2 (NERR) Error/Time out signal I 0
43 PA1 (STB) Data strobe O 0
44 PA0 (EN) Chip enable O 0
45 TX0 Communication data O 5.2
46 TX1 Not used - 0
47 - No connection - -
48 T-RDI CAN-BUS data I 4.8
49 T-TDO Not used - -
50 T-SCLK Not used - -
51 AS-C Speaker out mute O 5.1
52 AS-B Speaker out mute O 5.1
53 AS-A Speaker out mute O 5.1
54-57 - No connection - -
58 VSS Ground - 0
59 M2F Tape main motor control O 0
60 MS Tape MS mode control O 4.9
61 F/R Tape F/R control O 4.9
62 EQ Metal tape select O 4.9
63 NRSW Dolby mode selection O 0.3
64 - No connection - -
9.2. DSP Block
IC801 : YEAMAK7712AF
Pin
No.
Port Description I/O (V)
1 TSTI Not used - -
2-4 - (Connecting to ground) - 0
5 /PD (Connecting to VDD) - 5.0
6 /RST Reset input I 0
7-9 - Not used - -
10,11 DVB +5V power supply - 5.0
12-19 - Not used - -
20 SMODE (Connecting to VDD) - 5.0
21-23 - Not used - -
24 DVDD +5V power supply - 5.0
25 DVSS Ground - 0
26 XTI Crystal oscillator - 2.6
27 XTO Crystal oscillator - 2.4
28 TSTI2 (Connecting to VDD) - 5.0
29 /CS DSP chip select I 5.2
30 /WRQ DSP data write request I 5.2
31 DVSS Ground - 0
32 DVDD +5V power supply - 5.0
33 SCLK DSP clock I 5.2
34 SI DSP serial data I 0
35 WRDY DSP write ready O 0
36 DRDY DSP write ready O 0
37 SO DSP serial data O 0
38-48 - Not used - -
49 DVSS Ground - 0
50 DVDD +5V power supply - 5.0
51-68 - Not used - -
69 DVSS Ground - 0
70 DVDD +5V power supply - 5.0
71,72 Ground - 0
73 DVDD +5V power supply - 5.0
74,75 DVB +5V power supply - 5.0
76-78 - Not used - -
79 AVB +5V power supply - 5.0
80,81 AOUT R2,L2 Audio-Rear output O 2.5
82 NC No connection - -
83,84 AOUT R1,L1 Audio-Front output O 2.5
85,86 Ground - 0
87,88 +5V power supply - 5.0
89 NC No connection - -
90 AINR- Audio Rch (-) input I 2.3
91 AINR+ Audio Rch (+) input I 2.5
92 AINL- Audio Lch (-) input I 2.3
93 AINL+ Audio Lch (+) input I 2.5
94 VCON Voltage control - 2.5
95,96 Ground - 0
97 AVDD +5V power supply - 5.0
98,99 +5V power supply - 5.0
100 NC No connecion - -
9.3. Display Block
IC611 : C2BBFE000091
Pin
No.
Port Description I/O (V)
1-8 - Not used - -
9 GND Ground - 0
10,11 - Not used - -
12 TUNE.UP Tune up switch I 0
13 TUNE.DOWN Tune down switch I 0
14 VOL.UP Volume up switch I 5.0
15 VOL.DWN Volume down switch I 0
9
AUDI / CQ-JA1920L / CQ-JA1924L