MC13077 Motorola, MC13077 Datasheet - Page 5

• Manufacturer Part Number: MC13077
• Description: ADVANCED PAL/NTSC ENCODER
• Manufacturer: Motorola

MOTOROLA ANALOG IC DEVICE DATA
Pin
10
11
12
13
14
15
16
17
18
19
20
Y Out
Gnd
Red In
Green In
Blue In
B–Y
Clamp
R–Y
Clamp
Chroma
Out
Burst Flag
Out/Force
Burst Flag
PAL
Square–
wave
Out/Force
NTSC
Chroma
In
Symbol
Internal
Burst
Flag
Internal Equivalent
10 k
V CC
10 k
Schematic
See Pin 12
See Pin 12
20 k
V ref
2.0 V
V CC
1/2 V CC
1.4 V
10 k
10 k
10 k
1.4 V
PIN DESCRIPTIONS (continued)
Luminance Delay Line Drive Output. A
delay should be inserted between this
pin and Pin 6 to match the delay incurred
by the Chroma.
Ground
Red Video input.
Green Video input.
Blue Video input.
B–Y Clamp storage capacitor. A 0.01 F
capacitor should be connected from this
pin to ground, unless the pin is used as
an input.
R–Y Clamp storage capacitor. A 0.01 F
capacitor should be connected from this
pin to ground, unless the pin is used as
an input.
Chroma Bandpass Drive Output.
Burst Flag Output Disable and Force pin.
If left unconnected, internally generated
color burst will appear at Pins 2 and 4.
Burst Flag will appear at this pin (18). If
grounded, the Burst Flag will be
disabled. If externally driven from
another source of burst flag, the internal
flags will be overriden.
PAL/NTSC system switch. If grounded,
the MC13077 will encode NTSC, and if
left open, PAL.
Chroma Bandpass input. Output from
chroma bandpass filter should be
applied at this pin.
MC13077
Description
1.0 Vpp with sync
(100% saturated Color Bar output).
Ground
0.7 Vpp AC coupled (100% Color Bars).
0.7 Vpp AC coupled (100% Color Bars).
0.7 Vpp AC coupled (100% Color Bars).
If not used as an input the pin is clamped
during sync to 2.4 Vdc. Can be used as a
B–Y input (AC coupled, 350 mVpp, 100%
color saturation). Burst Flag, if disabled
at Pin 18, must be inserted here with the
following signal levels; –170 mV (NTSC),
–121 mV (PAL).
If not used as an input the pin is clamped
during sync to 2.4 Vdc. Can be used as a
R–Y input (AC coupled, 490 mVpp, 100%
color saturation). Burst Flag, if disabled
at Pin 18, must be inserted here with the
following signal level; +121 mV for PAL.
2.8 Vpp (100% Color Bars)
1.8 Vpp burst flag pulses if unconnected.
In PAL mode, a PAL squarewave
appears at this pin, the phase of which
can be reset by momentarily forcing the
pin to ground during the high state of
the squarewave.
1.4 Vpp (100% Color Bars) with
bandpass filter and 1.0 k matching
resistors.
Expected Waveforms
5