(No.YA173)1-7
2.4
TECHNICAL INFORMATION
2.4.1 MAIN MICRO COMPUTER (CPU) FUNCTION (MN102H75K)
Pin No.
Pin name
I/O
Function
1
ATSC_RX
O
ATSC serial communication
2
/ VSYNC
I
V.sync for OSD
3
LB_PRO
I
Low B protection detection [Error : H]
4
NC
-
--------
5
/RST
I
Main CPU reset [Reset:L]
6
NC
O
--------
7
/TEST
I
+3.3V
8
OSD_YS
O
OSD Ys (blanking)
9
SDA4
I/O I
2
C bus (data) for JCC5055
10
SYNC_SEL
I
Sync select [ATSC : L]
11
A_MU
O
Audio muting [Muting:H]
12
/HSYNC
I
H sync for OSD
13
M MUTE
O
Audio muting for MONITOR OUT
[Muting:L]
14
OSDXI
-
Oscillation for OSD
15
OSDXO
-
Oscillation for OSD
16
SDA2
I/O I
2
C bus (data) for MTS
17
AC IN
I
AC for time count
18
SCL2
O
I
2
C bus (data) for MTS
19
NC
-
--------
20
VCOI
I
LPF
21
PDO
O
LPF
22
/IP_RESET
O
Reset for DIST [Reset:L]
23
OSD_YM
O
OSD Ym (transparence)
24
OSD_B
O
OSD blue
25
POWER_LED
O
Lighting for POWER LED
[HIGH / ON:H]
26
OSD_G
O
OSD green out
27
OSD_R
O
OSD red out
28
VREF
I
Reference voltage for OSD
29
IP_ERR
I
AMDP program load error detection
[Error : L]
30
IREF
I
Reference current for OSD
31
COMP
I
Phase adjust for OSD
32
AVDD
I
+3.3V
33
CLL
I
Clamp low level for SUB CCD
34
VREFLS
I
Reference voltage for SUB CCD
35
SUB_CCD
I
Video for sub closed caption decoder
36
NC
-
--------
37
VSS
-
GND
38
MAIN_CCD
I
Video for main closed caption
decoder
39
VREFHS
I
Reference voltage for MAIN CCD
40
CLH
I
Clamp high level for MAIN CCD
41
VDD
I
+3.3V
42
SCL4
O
I
2
C bus (data) for JCC5055
43
NC
O
--------
44
LED_ONTIMER
O
Lighting for on temer LED
[ON TIMER ON:H]
45
CONVER_RXD
O
Convergence control
46
CONVER_TXD
I
Convergence control
47
SBT1
I
Use for on board writing [Setting : H]
48
NC
O
--------
49
ATSC_RST
O
Reset for ATSC tuner [Reset : L]
50
NC
O
--------
51
ATSC POW
O
ATSC power control [ON : H]
52
NC
O
--------
53
NC
O
--------
54
DC_COTL
O
Black level DC reproduce control
55
NC
O
--------
56
NC
O
--------
57
REC_LED
O
ATSC-REC reseration
(Lighting for program LED(Red)
[REC. ON : H]
58
/LOB_POW
O
Low-B power control [Power on:L]
59
/COMPLINK
I
AV COMPULINK III control
60
/POWERGOOD
I
Power condition check [ON : H]
61
/MECA_ON
I
Machine SW interrupt [Pushing:L]
62
/MAIN_POW
O
Main power control [Power on :L]
63
NC
-
--------
64
/B1 POW
O
B1 power control [Power on:L]
65
AFC1
I
Main AFT control [No AFT : H]
66
X-RAY
I
X-ray protection detection
[Protection : 2.0V]
67
NC
-
--------
68
KEY2 (Key scan)
I
Front key scan 2 (CH+, VOL+/-)
[No input : H]
69
KEY1
I
Front key scan 1 (CH-, MENU)
[No input : H]
70
SCL1
O
I
2
C bUS (clock) for EEP-ROM
71
SDA1
I/O I
2
C bus (data) for EEP-ROM
72
REMO
I
Remote control
73
NC
O
--------
74
VSS
I
GND
75
OSC2
O
4MHz oscillation for system clock
76
OSC1
I
4MHz oscillation for system clock
77
VDD
I
+3.3V
78
SCL0
O
I
2
C bus (clock) for general
79
VOUTENB
O
ATSC video output signal control
[Out : H / Non out : L]
80
SDA0
I/O I
2
C bus (data) for general
81
NC
O
--------
82
ATSC_TX
I
ATSC serial communication
83
NC
-
--------
84
P_MU
O
Picture muting [Muting:H]
Pin No.
Pin name
I/O
Function