NT68P61A Datasheet, PDF (28/48 Pages) List of Unclassifed Manufacturers – 8-Bit Microcontroller for Monitor (24K OTP ROM Type)

NT68P61A
VSYNC
INPUT
Schmitt
Trigger
HSYNC
INPUT
Schmitt
Trigger
Digital
Filter
S/C
1
V
0
Control
Logic
V sync.
Latch
Enable
VCNTL
VCNTH
8 µs
8.192 ms
HSEL
0
1
V sync.
counter
Enable
Reset
H sync.
counter
Enable
Reset
Digital
Filter
H
Sync
Separator
H
H&V
Sync.
Polarity
Detector
H sync.
Latch
Enable
HPOLO
HPOLI
H Sync.
Output
Control
HCNTL
HCNTH
HSYNCO
FREE_RUN
Control
S/C
V
VPOLI
V Sync.
0
V
Output
Control
1
VPOLO
Figure 17. Sync. Processor Block Diagram
VSYNCO
28