LC7872E Datasheet, PDF (13/17 Pages) Sanyo Semicon Device – CD Graphics Decoder

LC7872E
5. CD Graphics Monitor; CDGM
The CDGM pin goes high when the LC7872E receives any CD-G instruction. Since once this pin goes high it
remains high as long as power is applied, using this pin requires a reset when the disk is changed.
6. Video Output; VIDEO
A composite video signal is output from the VIDEO pin. The output level of the 8-bit D/A converter is 2.5 Vp-p.
Therefore only an external 75 Ω driver is required to acquire a 1 Vp-p rated output.
7. Error Flag Output; EFLG and FSX
The result of the error detection process can be monitored from the EFLG pin.
8. Color Bar Output; CB
The VIDEO pin outputs a color bar pattern when the CB pin is set high. The tables below describe this color bar
pattern.
RGB Mixture Ratio (HEX)
Item
WHITE
GRAY
YELLOW
CYAN
GREEN
MAGENTA
RED
BLUE
BORDER (BLACK)
R
G
B
F
F
F
B
B
B
F
F
0
0
F
F
0
F
0
F
0
F
F
0
0
0
0
F
0
0
0
No. 4868-13/17