JVC AV-28T5BK/P Service Manual page 12

2.4 TECHNINAL INFORMATION
2.4.1 MAIN MI-COM (CPU) PIN FUNCTION
Pin
Pin name I/O
No.
1 VssP2 -- GND
2 VssC4 -- GND
3 V1.8C4 I 1.8V
4 V3.3A3 I 3.3V
5 VrefP_Sdac I 3.3V
6 VrefN_Sdac -- GND
7 VrefP_Sdac I 3.3V
8 VrefN_Sdac -- GND
9 VrefP_Sdac I 3.3V
10 XtalIn I System clock(4MHz)
11 XtalOut O System clock(4MHz)
12 VssA1 -- GND
13 Vguard I CRT NECK protection
14 DecDig -- 1.8V
15 V5P1 I 5V
16 Phi2 -- Not used
17 Phi1 -- Not used
18 Gnd1 -- GND
19 SecPll -- Not used
20 Dec8G -- Not used
21 Ewd/Avl O Parabola wave
22 Vdb O V. Drive(-)
23 Vda O V. Drive(+)(For side pin)
24 Vif1 I IF
25 Vif2 I IF
26 Vsc -- Not used
27 Iref -- Not used
28 GndIF -- GND
29 Sif1 I SIF
30 Sif2 I SIF
31 Agc O AGC
32 EHT I HV change control
33 Ssif/RefIn/Avl/RefOut O L'/Other SW [L':H]
34 AudoIn5L I Not used
35 AudioIn5R I Not used
36 AudOutSL O Audio (Left)
37 AudOutSR O Audio (Right)
38 DecsDem -- Not used
39 QssO/AmO/AudeEm -- Not used
40 Gnd2 -- GND
41 PllIf -- Not used
42 SifAgc -- Not used
43 IfVo/FmRo/DvbO O Composite video detect
44 FmRo/DvbO -- Not used
45 V8AudioSwitches I 8V
46 AgcSsif -- Not used
47 V5P2 I 5V
48 SVO/IfVo/Cvbsl -- Not used
49 Audio4InL -- Not used
50 Audio4InR -- Not used
51 Y4/Cvbs4 I Composite video /Y
52 C4 I Chroma
53 Audio2InL -- Not used
54 Audio2InR -- Not used
55 Cvbs2/Y -- Not used
56 Audio3InL -- Not used
57 Audio3InR -- Not used
58 Y3/Cvbs -- Not used
59 C3 -- Not used
60 AudOutLsL -- Not used
61 AudOutLsR -- Not used
62 AudOutHpL -- Not used
63 AudOutHpR -- Not used
64 CVBSO/PIP -- Not used
1-6 (No.YA261)
Pin
Function
No.
65 SVM
66 FbiSo
67 Hout
68 VssComb
69 V5Comb
70 Vin/R2/Pr
71 Uin/B2/Pb
72 Yin/G2/Y
73 Ysync
74 Yout
75 Uout/INSSW2
76 Vout/Swo1
77 INSSW3
78 R3/Pr
79 G3/Y
80 B3/Pb
81 Gnd3
82 V5P3
83 BCL
84 BLKIN
85 Rout
86 Gout
87 Bout
88 V3.3A1
89 RefAdN
90 V3.3RefAdP
91 RefAd
92 GndA
93 V1.8A
94 V3.3A2
95 VssAD
96 V1.8ADC
97 REMOCON
98 P10/Int1
99 P11/TO
100 V1.8C2
101 VssC2
102 P04/I2SWs
103 P03/I2SClk
104 P02/I2SDo2
105 P01/I2SDo1
106 HP_DET
107 P13/T1
108 SCL1
109 SDA1
110 V3.3P
111 P20/TPwm
112 P21/Pwm0
113 P22/Pwm1
114 P23/Pwm2
115 Protect
116 P31/Adc1
117 V1.8C1
118 DecV1V8
119 Key
120 AGC
121 VssC1+P1
122 P24/PW3
123 P25/PWM4
124 V1.8C3
125 VssC3
126 Power DET
127 P14/RX
128 P15/TX
Pin name I/O
O Scan velocity modulation
I H pulse (Flyback pulse)
O H drive
-- GND
I 5V for comb filter
I EXT-1 R-Y
I EXT-1 B-Y
I EXT-1 Y
I Y for SyncSep
O Y(for 73pin)
I Ys(for EXT-1 Y/R-Y/B-Y insertion)
-- Not used
I Ys(for EXT-2 Y/R-Y/B-Y insertion)
I EXT-2 R-Y
I EXT-2 Y
I EXT-2 B-Y
-- GND
I 5V
I Auto Beam / contrast
I Black current input (For Auto white balance)
O Red (for CRT)
O Green (for CRT)
O Blue (for CRT)
I 3.3V
-- Not used
I 3.3V
-- Not used
-- GND
I 1.8V
I 3.3V
-- GND
I 1.8V
I Remote control
I AV_LINK control
O AV_LINK control
I 1.8V
-- GND
-- Not used
-- Not used
-- Not used
-- Not used
I Head phone connection detection [Connect : L]
O Main power control [ON : H]
O I2C bus (clock) for AV SW, TUNER, VOLUME
I/O I2C bus (data) for AV SW, TUNER, VOLUME
I 3.3V
O ROTATION
O S-CORRECTION CONTROL(PANORAMIC)
O Audio muting [Muting : L]
-- Not used
I Protection detection for Low B short [Detect : H]
O Lighting for POWER LED [ON : Soft RED]
I 1.8V
I 1.8V
I Key scan front control
I AGC
-- GND
-- Not used
-- Not used
I 1.8V
-- GND
I Main power detection [ON:H]
I/O I2C bus (data) for generally
O I2C bus (clock) for generally
Function