ISL59885 Intersil Corporation, ISL59885 Datasheet - Page 4

• Manufacturer Part Number: ISL59885
• Description: Auto-Adjusting Sync Separator
• Manufacturer: Intersil Corporation

INTERVAL
NOTES:
b. The composite sync output reproduces all the video input sync pulses, with a propagation delay.
c. Vertical sync leading edge is coincident with the first vertical serration pulse leading edge, with a propagation delay.
d. Horizontal sync output produces the true “H” pulses of nominal width of 5µs. It has the same delay as the composite sync.
H SYNC
SIGNAL 1a. COMPOSITE VIDEO INPUT, FIELD ONE
SIGNAL 1b. COMPOSITE SYNC OUTPUT, PIN 1
SIGNAL 1c. VERTICAL SYNC OUTPUT, PIN 3
SIGNAL 1d. HORIZONTAL SYNC OUTPUT, PIN 7
H
1.5µs ±0.1µs
TIME
PRE-EQUALIZING
PULSE INTERVAL
START OF
FIELD ONE
1
3H
2
4
H
3
9 LINE VERTICAL INTERVAL
VERTICAL BLANKING INTERVAL = 20H
PULSE INTERVAL
H
4
VERTICAL SYNC
3H
5
FIGURE 7. TIMING DIAGRAM
t
VS
6
ISL59885
POST-EQUALIZING
7
PULSE INTERVAL
3H
8
0.5H
+H
-H
9
1271µs
REF SUBCARRIER PHASE,
COLOR FIELD ONE
10
+63.5µs
-0µs
19
H
20
21
September 8, 2005
FN7442.3