UPC1830GT NEC, UPC1830GT Datasheet - Page 20

• Manufacturer Part Number: UPC1830GT
• Description: FILTER-CONTAINING VIDEO CHROMA/ SYNCHRONIZING SIGNAL PROCESSING LSI COMPATIBLE WITH NTSC/PAL SYSTEM
• Manufacturer: NEC

(7) Horizontal/vertical counter circuit
20
• Horizontal counter circuit
• 525/625 counter circuit
Divides a 32f
Performs counting at 4f
Generates VD in 0.75H delay from the falling edge of a vertical sync. signal in an odd field and in 0.75H delay
from the falling edge of a vertical sync. signal in an even field.
H
signal to generate horizontal timing signals such as HD and BLK signals.
H
and generates a vertical timing signal.
PC1830