M37212 Mitsubishi, M37212 Datasheet - Page 70

• Manufacturer Part Number: M37212
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
• Manufacturer: Mitsubishi

8.10.8 OSD Output Pin Control
The OSD output pins R, G, B and OUT1 can also function as ports
P5
dress 00CB
it to “1” to specify it as a general-purpose port P5.
The OUT2 can also function as port P1
control register (address 00EC
bit 7 of the CRT port control register to “1” to specify the pin as OSD
output pin, or set it to “0” to specify as port P1
The input polarity of the H
R, G, B, OUT1 and OUT2 can be specified with the CRT port control
register (address 00EC) . Set a bit to “0” to specify positive polarity;
set it to “1” to specify negative polarity (refer to Figure 8.11.13).
The CRT port control register is shown in Figure 8.10.17.
Fig. 8.10.17 CRT Port Control Register
70
2
–P5
5
. Set corresponding bit of the port P5 direction register (ad-
16
) to “0” to specify these pins as OSD output pins, or set
C R T P o r t C o n t r o l R e g i s t e r
b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0
SYNC
16
, V
) to “1” (output mode). After that, set
SYNC
and output polarity of signals
0
. Set bit 0 of the CRT port
M37212M4/M8–XXXSP, M37212M6–XXXSP/FP
0
.
0
1
2
3
4
5
6
7
B
C R T p o r t c o n t r o l r e g i s t e r ( C R T P ) [ A d d r e s s 0 0 E C
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
H
s w i t c h b i t ( H S Y C )
R / G / B o u t p u t p o l a r i t y s w i t c h
b i t ( R / G / B )
O U T 2 o u t p u t p o l a r i t y
s w i t c h b i t ( O U T 2 )
O U T 1 o u t p u t p o l a r i t y
s w i t c h b i t ( O U T 1 )
R s i g n a l o u t p u t s w i t c h b i t
( O P 5 )
G s i g n a l o u t p u t s w i t c h
b i t ( O P 6 )
B s i g n a l o u t p u t s w i t c h
b i t ( O P 7 )
V
s w i t c h b i t ( V S Y C )
S Y N C
S Y N C
i n p u t p o l a r i t y
i n p u t p o l a r i t y
N a m e
0 : P o s i t i v e p o l a r i t y i n p u t
1 : N e g a t i v e p o l a r i t y i n p u t
0 : P o s i t i v e p o l a r i t y i n p u t
1 : N e g a t i v e p o l a r i t y i n p u t
0 : P o s i t i v e p o l a r i t y o u t p u t
1 : N e g a t i v e p o l a r i t y o u t p u t
0 : P o s i t i v e p o l a r i t y o u t p u t
1 : N e g a t i v e p o l a r i t y o u t p u t
0 : P o s i t i v e p o l a r i t y o u t p u t
1 : N e g a t i v e p o l a r i t y o u t p u t
0 : R s i g n a l o u t p u t
1 : M U T E s i g n a l o u t p u t
0 : G s i g n a l o u t p u t
1 : M U T E s i g n a l o u t p u t
0 : B s i g n a l o u t p u t
1 : M U T E s i g n a l o u t p u t
F u n c t i o n s
with ON-SCREEN DISPLAY CONTROLLER
1 6
]
MITSUBISHI MICROCOMPUTERS
A f t e r r e s e t R W
M37212EFSP/FP
0
0
0
0
0
0
0
0
R W
R W
R W
R W
R W
R W
R W
R W
Rev. 1.0