lc7872e Sanyo Semiconductor Corporation, lc7872e Datasheet - Page 13

• Manufacturer Part Number: lc7872e
• Description: Cd Graphics Decoder
• Manufacturer: Sanyo Semiconductor Corporation

5. CD Graphics Monitor; CDGM
6. Video Output; VIDEO
7. Error Flag Output; EFLG and FSX
8. Color Bar Output; CB
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.
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
The result of the error detection process can be monitored from the EFLG pin.
The VIDEO pin outputs a color bar pattern when the CB pin is set high. The tables below describe this color bar
pattern.
driver is required to acquire a 1 Vp-p rated output.
LC7872E
RGB Mixture Ratio (HEX)
WHITE
GRAY
YELLOW
CYAN
GREEN
MAGENTA
RED
BLUE
BORDER (BLACK)
Item
R
F
B
F
F
F
0
0
0
0
G
F
B
F
F
F
0
0
0
0
B
B
F
0
F
0
F
0
F
0
No. 4868-13/17