JVC AV-32WF47/R Service Manual page 5

2.4 TECHNICAL INFORMATION
2.4.1 MAIN MI-COM (CPU) PIN FUNCTION
Pin
Pin name I/O
No.
1 M_MUTE O Fixed output muting [Muting : H]
2 KEY1 I Front key scan voltage (CH+ / VOL+ / VOL-)
3 KEY2 I Front key scan voltage (CH- / MENU/POWER)
4 uP_DVss - GND
5 Reset I CPU reset [Reset: L]
6 8MHz_OUT O CPU system clock: 8MHz oscillation
7 8MHz_IN I CPU system clock: 8MHz oscillation
8 TEST - GND
9 uP_DVDD I 5V
10 TU_RESET O Reset for digital tuner module [Reset : H]
11 uP_VVSS - GND
12 TV_HGND - GND
13 FBP_SCP I Flyback pulse (H. pulse)
14 HOUT O H. drive (oscillation)
15 H_Vcc I 9V (for H. oscillation start)
16 HAFC_1 - H. AFC filter
17 Vsaw - V. saw filter
18 VOUT O V. drive
19 EW_OUT O Parabola waveform (for sidepin correection)
20 X-RAY I
Not used: X-ray detection (for protection) [Detection : H]
21 Ys I Not used
22 Cb_IN I Cb (external) signal
23 Y_IN I Y (external) signal
24 Cr_IN I Cr (external) signal
25 TV_DVcc I 3.3V
26 V3IN/CIN I Not used
27 EHT_IN I HV change control
28 V2_IN/Y_IN I Not used
Pin
Function
No.
29 YC_GND
30 V1_IN
31 ABCL
32 MONITOR_OUT O Not used
33 BLACK_DET
34 SVM_OUT
35 APL_FIL
36 APC_FIL
37 fsc_OUT
38 YC_Vcc
39 R_OUT
40 G_OUT
41 B_OUT
42 RGB_Vcc
43 IK_IN
44 TV_DGND
45 uP_AGND
46 uP_AVdd
47 MAIN_POWER O Power on/off switching control [Powen on: L]
48 DTVM_REQ
49 SDA1
50 SCL1
51 SDA0
52 A_MUTING
53 SCL0
54 AC_IN
55 REMOCON
56 LED
Pin name I/O
- GND
I Not used
I Current for automatic beam (brightness)/contrast limit
- Black level detection filter
O Y signal for scan velocity scan modulation
- Average picture level filter
- Automatic phase control filter
O Not used
I 5V (for video process circuit)
O R signal for CRT output
O G signal for CRT output
O B signal for CRT output
I 9V (for RGB process circuit)
I Not used
- GND
- GND
- 5V
I Read request from DTV micom [Request : H]
I/O Data for Inter IC control bus (for DTV micom)
O Clock for Inter IC control bus (for DTV micom)
I/O Data for Inter IC control bus (for main memory)
O Audio output muting [Muting : H]
O Clock for Inter IC control bus (for main memory)
I AC 50/60Hz input for timer clock
I Remote control sensor input [No input : H]
O POWER / ON TIMER LED lndication [lighting : L]
Function
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