
MB90050
8
(Continued)
Pin
no.
Pin
name
I/O
Circuit
type
Function
25
RESET
I
C
Reset signal input pin.
Upon input of the low level signal, this pin causes an internal reset.
After the power supply is inserted, the reset input is required for normal op-
eration.
During regular operation, the pin inputs the high level signal.
37
TESTI1
I
E
Test signal input pin. Input High level signal during normal operation.
(Input of the Low level signal activates test mode operation.)
47
TESTI2
I
E
Test signal input pin. Input High level signal during normal operation.
38
VIN
I
I
Composite video signal input pin. This pin inputs a DC-reproduced signal of
2 V
P
-
P
(pedestal level 1.57 V, sync tip level 1 V) .
46
YIN
I
I
Luminance video signal (Y video signal) input pin.
This pin inputs a DC-reproduced signal of 2 V
P
-
P
(pedestal level 1.57 V, sync
tip level 1 V) .
44
CIN
I
I
Saturation video signal (C video signal) input pin.
This pin inputs a signal at 1.57 VDC and a color burst signal amplitude of 0.57
V
P
-
P
.
40
VOUT
O
I
Composite video signal output pin.
This pin outputs a signal of 2 V
P
-
P
(pedestal level 1.57 V, sync tip level 1 V) .
When the RESET signal inputs the low level signal, this pin outputs the black
video (pedestal level without color burst) signal.
48
YOUT
O
I
Luminance video signal (Y video signal) output pin.
This pin outputs a signal of 2 V
P
-
P
(pedestal level 1.57 V, sync tip level 1 V) .
When the RESET pin inputs the low level signal, this pin outputs the black
video (pedestal level) signal.
42
COUT
O
I
Saturation video signal (C video signal) output pin.
This pin outputs a signal at 1.57 VDC and a color burst signal amplitude of
0.57 V
P
-
P
.
When the RESET pin inputs the low level signal, this pin outputs the black
video signal (a DC voltage of 1.57 V without color burst).
4,
22
V
CC
Power supply pin for digital circuit. These pins supply
+
5 V and make all V
CC
pins same potential.
5,
21
V
SS
Digital ground pins. These pins make all V
SS
pins and AV
SS1
/AV
SS2
pins same
potential.
39
AV
CC1
Power supply pin for analog circuit and composite video signal Input/Output
(VIN-VOUT) circuit. This pin supplies
+
5 V. Input analog ground level when
not using this analog circuit.
43
AV
CC2
Power supply pin for analog circuit, luminance video signal Input/Output
(YIN-YOUT) circuit, and saturation video signal Input/Output (CIN-COUT)
circuit. This pin supplies
+
5 V. Input analog ground level when not using this
analog circuit.
41,
45
AV
SS1
,
AV
SS2
Analog ground pins. AV
SS1
pin makes AV
SS2
pin same potential.
V
SS
pins make these pins same potential.