MC1378
Color Television Composite
Video Overlay Synchronizer
The MC1378 is a bipolar composite video overlay encoder and
microcomputer synchronizer. The MC1378 contains the complete encoder
function of the MC1377, i.e., quadrature color modulators, RGB matrix, and
blanking level clamps, plus a complete complement of synchronizers to lock
a microcomputer–based video source to any remote video source. The
MC1378 can be used as a local system timing and encoding source, but it is
most valuable when used to lock the microcomputer source to a remotely
originated video signal.
• Contains All Needed Reference Oscillators
•
•
•
•
•
•
COLOR TELEVISION
COMPOSITE VIDEO OVERLAY
SYNCHRONIZER
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 711
Can Be Operated in PAL or NTSC Mode, 625 or 525 Line
40
Wideband, Full–Fidelity Color Encoding
1
Local or Remote Modes of Operation
FN SUFFIX
PLASTIC PACKAGE
CASE 777
(PLCC–44)
Minimal External Components
1
Designed to Operate from 5.0 V supply
Will Work with non standard Video
PIN CONNECTIONS
Local/Rem.
1 (1)
(44) 40
H. Sync In
H. PLL Filter
2 (2)
(43) 39
Comp. Sync Out
{
3 (3)
(42) 38
V. Out/Sync In
4 (4)
(41) 37
Clock PLL Filter
H. VCO
Burst Gate Out
5 (5)
(40) 36
Clock VCC
PAL/NTSC Mode
6 (7)
(38) 35
Clock Output
Ground
7 (8)
(37) 34
Clock Ground
3.58/4.43 In
8 (9)
(36) 33
9 (10)
(35) 32
}Clock VCO
Chroma PLL Filter
{
10 (11) (34) 31
Killer Filter
11 (12) (33) 30
Quad. Loop Filter
R–Y Clamp
12 (13) (32) 29
PAL Indent. Cap
B–Y Clamp
Figure 1. Simplified Application
13 (14) (31) 28
Chroma VCO
36MHz Master Clock
R Input
3.58/4.43MHz
Remote
Video
Red
15 (16) (29) 26
Ground
MC1378
Green
Composite
Overplayed
Video
Blue
Video Enable
B Input
16 (18) (27) 25
Overlay Enable
–Y Output
17 (19) (26) 24
Rem. Vid. In
Chroma Out
Vert/Comp Sync
Video
System
14 (15) (30) 27
VCC
Comp. Vid. Out
G Input
H Sync
ACC Filter
Loc. Vid. Clamp
18 (20) (25) 23
19 (21) (24) 22
Chroma In
20 (22) (23) 21
Rem. Vid. Clamp
–Y Input
* ( ) PLCC Pin Assignments
Local/Remote
ORDERING INFORMATION
Device
525/60
625/50
9–58
PAL/
NTSC
MC1378P
MC1378FN
Operating
Temperature Range
TA = 0° to +70°C
Package
Plastic DIP
PLCC–44
MOTOROLA ANALOG IC DEVICE DATA
