23
MB90F553A (System control Mi-COM)
PIN No.
PORT NAME
I/O
FUNCTION
1
POLV
l
PC input's vertical sync signal judge input..
2
EXIV
l
PC input's horizontal sync signal judge input.
3
OSD.TRE
l
OSD IC busy signal input (H: busy).
4
OSD.RST
O
OSD IC reset signal output.
5
PC
O
This pin turns to "H" when the PC input is seiected.
6
DVD2
O
This pin turns to "H" when the DVD2 input is selected.
7
DIGITAL
O
Not used.
8
EUAV2.S
O
This pin turns to "H" when the AV2 Europe is S-Video.
9,10,12-14
D0-D4
O
Parallel transmission data.
11,36,37,42
GND
-
Ground pins of this IC.
81
15
UCK
O
The clock signai for the parallel transmission data.
16
ENA0
O
Parallel transmission data switching control.
17
ENA1
O
18,49,51,85
NC
I
Mi-com soft data rewriting terminals.
86
19
DP. DATA
O
DVD serial transmission data output.
20
DV.DATA
I
DVD serial transmission data input.
24,27,32,33
N.C
-
Not used.
41,47,48,55
56
21
OSD.CLK
O
Serial clock output to OSD IC control.
22
OSD.DATA
O
Serial data output for OSD IC control.
23,84
Vcc
-
+5 V power supply pin.
25
PC VGA
l
PC irregular signal (except VGA) detect input (VGA: L).
26
DP.RDY
O
DVD serial data strobe signal output.
28
SDA
I/O
I
2
C data in/out pin.
29
SCL
O
I
2
C clock output pin.
30
OSD.CS
O
OSD IC chip select control output.
31
CLR
O
This pin turns to "L" when the power is turned on.
34
Avcc
-
+5 V power supply pin for the analog section.
35
AVR+
l
+5 V reference voltage input.
38
HP.SW
l
This pin turns to "H" when the headphone jack is inserted.
39
LED.CLK
O
Serial clock output to the LED control IC.
40
LED DATA
O
Serial data output to the LED control IC.
43
RGBDL
l
This pin turns to "L" when the AV3 Europe is selected.
44
EUAV2CTL
l
16:9 screen judge input (DC 1.88 ~ 2.92 V
→
16:9).
45
EUAV3CTL
l
46
KEY.lN
I
Operation key input (A/D).
50
MD1
-
Be connected to the +5 V Iine.
52
HSTX
-
53
UINH
l
This pin turns to "H" during V-sync period.
54
DV.CLK
l
Synchronous clock input from the DVD.
57
AV4. S
l
This pin turns to "L" when the S-cord is connected to the AV4 S-Video.
58
AV5. S
l
This pin turns to "L" when the S-cord is connected to the AV5 S-Video.
59
CTL.B
O
Audio input signal selection control.
60
CTL.A
O
61
PAL.N
O
PAL-N,M system judge output.
62
FRONT.S
l
This pin turns to "L" when the S-cord is connected to the AV1 S-Video.
63
REMOTE 1
l
Remote control signal input of the Control Unit.
64
REMOTE 2
l
Remote control signal input of the Display Panel.
65
V.SYNC
l
PAL-N system judge input (PAL-N: 50 Hz).
66
PC.VP
l
PC's V-Sync input pin for vertical frequency judge.
67
AV6.S
l
This pin lurns to "L" when the S-cord is connected to the AV6 S-Video
68
AV7.S
I
This pin turns to "L" when the S-cord is connected to the AV7 S-Video.
69
DAT.lN
l
I
2
C data input pin from the Audio IC.
