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• MAIN BOARD IC920 TC90A07U (VIDEO ENCODER)
Pin No. Pin Name I/O Function
1 MIFH I
Horizontal synchronous signal input from the MPEG audio/video decoder (IC901)
2 MIFFL I
Vertical synchronous signal input from the MPEG audio/video decoder (IC901)
3 MIFFR O
Frame synchronous signal output terminal Not used (open)
4 VBLNKI I
Video blanking signal input terminal “L”: blanking
5 VDD —
Power supply terminal (+3.3V) (digital system)
6 GND —
Ground terminal (digital system)
7 YCDI0 I
8 bit pixel data (LSB) input from the MPEG audio/video decoder (IC901)
8 to 13
YCDI1 to
YCDI6
I
8 bit pixel data input from the MPEG audio/video decoder (IC901)
14
YCDI7
I
8 bit pixel data (MSB) input from the MPEG audio/video decoder (IC901)
15
MODE
I
NTSC/PAL mode selection signal input from the MPEG audio/video decoder (IC901)
“L”: NTSC, “H”: PAL
16
VBLNKO
O
Video blanking signal output terminal
17
VDD
—
Power supply terminal (+3.3V) (digital system)
18
GND
—
Ground terminal (digital system)
19
CLPF
I
Low-pass filter on/off control signal input for the internal CbCr “L”: on, “H”: off
Fixed at “L” in this set
20
BF
O
Burst flag pulse output terminal Not used (open)
21
BLK
O
Blanking signal output terminal Not used (open)
22
FLD
O
Field discrimination signal output terminal “L”: odd number field, “H”: even number field
Not used (open)
23
BIAS2
—
Connect a capacitor for the D/A converter bias
24
BIAS1
—
Connect a capacitor for the D/A converter bias
25
VREF
I
Reference voltage input terminal (for D/A converter)
26
AGND
—
Ground terminal (analog system for D/A converter)
27
YOUT
O
Analog Y signal (luminance signal) output terminal Not used (open)
28
AVCC
—
Power supply terminal (+3.3V) (analog system for D/A converter)
29 COUT O
Analog C signal (chroma signal) output terminal Not used (open)
30 AGND —
Ground terminal (analog system for D/A converter)
31 CVOUT O
Analog composite video signal output terminal
32 AVCC —
Power supply terminal (+3.3V) (analog system for D/A converter)
33 CSYNC O
Composite synchronous signal output terminal Not used (open)
34 HSYNC O
Horizontal synchronous signal output terminal Not used (open)
35 VSYNC O
Vertical synchronous signal output terminal Not used (open)
36 TMS3 I
Mode setting terminal Normally fixed at “H”
37 VDD —
Power supply terminal (+3.3V) (digital system)
38 CK27I I
System clock input terminal (27 MHz)
39 XO O
System clock output terminal (27 MHz)
40 GND —
Ground terminal (digital system)
41 TMS2 I
Mode setting terminal Normally fixed at “H”
42 CK27O O
System clock signal (27 MHz) output to the MPEG audio/video decoder (IC901)
43 TMS1 I
Reset signal input from the system controller (IC701) “L”: reset
44 TMS0 I
Video output mode setting terminal “L”: normal output mode, “H”: color bar output mode
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