JVC LT-42R10BU/PP Service Manual page 8

2.3.2 MAIN CPU PIN FUNCTION
Pin Pin name I/O
1 KEY1 I
2 ECO SENSER I
3 VDD33_GPIO -
4 SLOW1 I
5 SLOW2 I
6 AFC1 I
7 AGC I
8 GND -
9 VDD33_CADC -
10 MONITOR_OUT O
11 VDD33_AFE -
12 VOUT2 O
13 VDD12_ADC_1234 -
14 VOUT3 O
15 GND -
16 TV_CV I
17 GND -
18 E1_CV I
19 VDD12_ADC_1234 -
20 E2_CV/Y I
21 GND -
22 AGND1234 I
23 VDD33_AFE -
24 IDTV_CV I
25 VDD12_ADC_1234 -
26 IDTV_CR I
27 GND -
28 IDTV_Y I
29 GND -
30 SC_FB1 I
31 VDD12_ADC_1234 -
32 IDTV_CB I
33 GND -
34 SC_R1 I
35 VDD33_AREF -
36 SC_G1 I
37 VDD12_ADC_5678 -
38 SC_B1 I
39 GND -
40 AGND5678 I
41 GND -
42 E2_C I
43 VDD12_ADC_5678 -
44 VIN16 I
45 GND -
46 VIN17 I
47 VDD33_AREF -
48 VIN18 I
49 VDD12_ADC_5678 -
50 E3_PR I
51 GND -
52 E3_Y I
53 GND -
54 E3_PB I
55 VDD12_ADC_5678 -
56 VIN22 I
57 GND -
58 VDD_CORE -
59 GND -
60 SIF_INM I
61 TU_SIF I
62 VDD12_SIFADC -
63 LINE_OUT1R O
64 LINE_OUT1L O
65 TU_R O
66 TU_L O
67 R_AUSW I
68 L_AUSW I
69 VDD33_AAU -
1-8 (No.YA682<Rev.001>)
[IC7001 : MAIN PWB]
Function
Key scan for side control (POWER/VOL/UP/DOWN)
Eco sensor detection
3.3V power supply
EXT-1 SLOW detection
EXT-2 SLOW detection
AFT voltage for VHF/UHF tuner
RF AGC voltage for VHF/UHF tuner
GND
3.3V power supply
Video for EXT-2
3.3V power supply
Not used
1.25V power supply
Not used
GND
Video for VHF/UHF tuner
GND
Video for EXT-1
1.25V power supply
Video/Y for EXT-2
GND
LPF setting
3.3V power supply
Not used
1.25V power supply
Not used
GND
Not used
GND
Ys for EXT-1
1.25V power supply
Not used
GND
R for EXT-1
3.3V power supply
G for EXT-1
1.25V power supply
B for EXT-1
GND
LPF setting
GND
C for EXT-2
1.25V power supply
Not used
GND
Not used
3.3V power supply
Not used
1.25V power supply
Pr for EXT-3
GND
Y for EXT-3
GND
Pb for EXT-3
1.25V power supply
Not used
GND
1V power supply
GND
SIF for VHF/UHF tuner
SIF for VHF/UHF tuner
1.25V power supply
Audio for EXT-1
Audio for EXT-1
Audio for EXT-2 or Audio out
Audio for EXT-2 or Audio out
Audio
Audio
3.3V power supply
Pin Pin name I/O
70 LINE_IN3R I
71 LINE_IN3L I
72 GND -
73 LINE_IN2R I
74 LINE_IN2L I
75 GND -
76 LINE_IN1R I
77 LINE_IN1L I
78 VREFAU I
79 HP_R O
80 HP_L O
81 MAIN_OUT_SUB O
82 M_R O
83 M_L O
84 GND -
85 VDD10_HDMI1+2 -
86 HMDI1_RXCN I
87 HMDI1_RXCP I
88 GND -
89 VDD33_HDMI1+2 -
90 HDMI1_RX0N I
91 HDMI1_RX0P I
92 GND -
93 VDD10_HDMI1+2 -
94 HDMI1_RX1N I
95 HDMI1_RX1P I
96 GND -
97 VDD33_HDMI1+2 -
98 HDMI1_RX2N I
99 HDMI1_RX2P I
100 GND -
101 VDD10_HDMI1+2 -
102 VDD_CORE -
103 GND -
104 VDD10_HDMI1+2 -
105 HMDI2_RXCN I
106 HMDI2_RXCP I
107 GND -
108 VDD33_HDMI1+2 -
109 HDMI2_RX0N I
110 HDMI2_RX0P I
111 GND -
112 VDD10_HDMI1+2 -
113 HDMI2_RX1N I
114 HDMI2_RX1P I
115 GND -
116 VDD33_HDMI1+2 -
117 HDMI2_RX2N I
118 HDMI2_RX2P I
119 GND -
120 VDD10_HDMI1+2 -
121 VDD25_DRAM -
122 DRAM_VREF I
123 VDD25_DRAM -
124 VDD25_DRAM -
125 VDD25_DRAM -
126 RX_DTV O
127 DIN_HOTP1 O
128 AUDIO_MUTE O
129 VDD33_GPIO -
130 LB_PRO I
131 P3.2 I
132 HM_SDA I/O Data for I2C bus (for HDMI)
133 HM_SCL O
134 HM_HPLUG2 O
135 HM_HPLUG3 O
136 STATUS I
137 ID_RESET O
138 IRQ O
Function
Not used
Not used
GND
Not used
Not used
GND
Not used
Not used
Reference voltage setting
Audio for headphone
Audio for headphone
Not used
Audio for speaker
Audio for speaker
GND
1V power supply
TMDS clock for HDMI
TMDS clock for HDMI
GND
3.3V power supply
TMDS data for HDMI
TMDS data for HDMI
GND
1V power supply
TMDS data for HDMI
TMDS data for HDMI
GND
3.3V power supply
TMDS data for HDMI
TMDS data for HDMI
GND
1V power supply
1V power supply
GND
1V power supply
Not used
Not used
GND
3.3V power supply
Not used
Not used
GND
1V power supply
Not used
Not used
GND
3.3V power supply
Not used
Not used
GND
1V power supply
2.5V power supply
Reference voltage setting
2.5V power supply
2.5V power supply
2.5V power supply
Not used
Hotplug error detection for HDMI connector-1 [Error = L]
Speaker/headphone output muting [Muting = H]
3.3V power supply
Power abnormality detection [Emergent = H]
L fixed
Clock for I2C bus (for HDMI)
Hotplug error detection for HDMI connector-2 [Error = L]
Hotplug error detection for HDMI connector-3 [Error = L]
Not used
Not used
Not used