Table of Contents
2.4
TECHNICAL INFORMATION
2.4.1 MAIN MI-COM (CPU) PIN FUNCTION
Pin
Pin name I/O
No.
1
MTS_ADJ
I
Not used
2
AFT1
I
AFT voltage for tuner (Tuning frequency control)
3
KEY
I
Key scan for front control [No signal: H]
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 AGC_MUTE O AGC muting for tuner (when channel select) [Muting : 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
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
Chroma signal (for YC separation output)
27 EHT_IN
I
Not used
28 V2_IN/Y_IN
I
Y signal (for YC separation output)
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 PANORAMA
49 SDA0
50 SCL0
51 SDA1
52 A_MUTING
53 SCL1
54 LED
55 REMOCON
56 ASP_ABL
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 Color sub carrier (3.58MHz) for 3-line digital comb filter [IC5201]
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
Not used: Aspect size control [PANORAMA: L]
I/O Data for Inter IC control bus (for various devices)
O Clock for Inter IC control bus (for various devices)
I/O Data for Inter IC control bus (for main memory)
O Audio muting [Muting : H]
O Clock for Inter IC control bus (for main memory)
O POWER / ON TIMER LED lndication [lighting : L]
I
Remote control sensor input [No input : H]
I
Not used
Function
(No.YA257)1-5
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