UPD6462 NEC, UPD6462 Datasheet - Page 8

• Manufacturer Part Number: UPD6462
• Description: CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY 12 ROWS x 24 COLUMNS
• Manufacturer: NEC

8
1. MASK CODE OPTIONS
1.1 MASK CODE OPTIONS
(1)
(2)
(3)
(4)
(5)
The PD6461, PD6462 provide mask options for selecting the following items:
is selected. (When RGB+3BLK mode is selected, select option A as the output distribution format. Options B and C
are invalid.)
the vertical display start position can be set more finely than in nine-line units.
V
R
character signal for each color, select RGB+3BLK mode.
video tape (such as a date and title). Other information, however, need only be displayed in the viewfinder (battery
or focus alarm and tape count). The PD6461, 6462 can distribute such information to different output channels in
units of rows or half rows. You can select option A, option B, and option C as the output distribution format (only when
RGB+V
CLOCK INPUT in 6. ELECTRICAL CHARACTERISTICS.
Data transfer
Vertical display start position
Pin selection
Output distribution format
Dot clock
(1)
(2)
(3)
(4)
(5)
G
BLK
Select the format to be used to distribute character signals to the V
, V
Select the command transfer format.
Select the units used for specifying the vertical display start position of the character display area. In three-line units,
Select the pins used to output character signals. In RGB+V
When displaying colored characters in a color viewfinder, select RGB+V
When an on-screen IC is used in a camcorder, some information is displayed in the viewfinder and recorded onto
Select the dot clock to be used to display characters. When an external clock input is selected, refer to EXTERNAL
, G
B
Data transfer
Vertical display start position
Pin selection
Output distribution format
Dot clock
, V
BLK
C1
BLK
+V
, B
, V
C2
BLK
C1
mode is selected).
, V
, BLK1, V
Item
C1
, and BLK1 pins.
C2
, and BLK2 pins. In RGB+3BLK mode, character signals are output from the V
LSB first
Specified in three-line units
RGB+V
Option A
LC oscillation
C1
+V
C2
Option B
Selections
C1
+V
C2
MSB first
Specified in nine-line units
RGB+3BLK
External clock input
C1
mode, character signals are output from the V
and V
C1
+V
Option C
C2
C2
channels when RGB+V
mode. When assigning a separate
PD6461, 6462
C1
+V
R
, V
C2
G
mode
, V
R
B
,
,