MC13077
Advanced PAL/NTSC Encoder
The MC13077 is a high quality RGB/YUV to NTSC/PAL encoder with
Composite Video and S–Video outputs. The IC integrates the color
difference and luma matrix circuitry, chroma modulators, subcarrier
oscillator, and logic circuitry to encode component video into a composite
video signal compatible with the NTSC/PAL standards. The IC operates off a
standard + 5.0 V supply and typically requires less than 75 mA, making it
useful in PC environments. The high degree of integration saves board
space and cost, as only passive external components are required for
operation. The IC is manufactured using Motorola’s MOSAIC™ process and
is available in a 20 pin DIP or SOIC package.
•
Single 5.0 V Supply
ADVANCED
PAL/NTSC ENCODER
SEMICONDUCTOR
TECHNICAL DATA
•
•
•
•
•
•
•
•
Composite Output
S–Video Outputs
PAL/NTSC Switchable
PAL Squarewave Output
PAL Sequence Resettable
Internal/External Burst Flag
Digitally Determined Modulator Axes
Subcarrier Reference Drive Selectable
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
(SO–20L)
20
1
20
1
P SUFFIX
PLASTIC PACKAGE
CASE 738
ORDERING INFORMATION
Device
MC13077DW
MC13077P
Operating
Temperature Range
TA = 0° to +70°C
Package
SO–20L
Plastic DIP
VCC
1
4x fsc Xtal/
4x fsc Input
14.32/
17.73
20 p
8
4x fsc
Oscillator
Simplified Block Diagram
Gnd
11
3.58/
4.43
Latch
Divide by Four
Ring Counter
R
45°
0°
90°
Divide by 512
PLL
Off
LPF
Countdown
Decoder
Burst
Flag
Adjust
18
Burst Flag
Out/Force Burst
Flag
3.58/4.43 MHz 9
In/ PLL Off
Red In
12
1.0
µ
Green In
13
1.0
µ
Blue In
14
1.0
µ
R–Y Burst Flag
B–Y Burst Flag
Color
Difference R–Y
B–Y
and
B–Y
Clamp
Luma
Matrix
Sync
Yin
R–Y
Clamp
H/2
Hsync
Latch
H
PAL
F/F
PAL/
NTSC
Switch
Chroma Out
Chroma In
19 PAL Squarewave
Out/ Force NTSC
17
20
4.7 n
4
75
Chroma
S–Video
Luma
S–Video
Comp
Video
1.0 k Chroma
BPF
1.1 k
Sync
Input
Luma
Clamp
3
75
2
75
Yout
10
6
Luma Delay
1.2 k
15
B–Y
Clamp
16
R–Y
Clamp
7
Sync In/
Sync Sep
5
Luma
Clamp
1.2 k
MOTOROLA ANALOG IC DEVICE DATA
9–175
MC13077
MAXIMUM RATINGS
Rating
Supply Voltage
Storage Temperature
Operating Junction Temperature
Operating Ambient Temperature
Symbol
VCC
Tstg
TJ
TA
Value
6.0
– 65 to +150
+150
0 to + 70
Unit
V
°C
°C
°C
RECOMMENDED OPERATING CONDITIONS
Characteristic
Supply Voltage
Sync Input Threshold Equivalent (See Figure 2)
Pulse Width
R, G, B Input (Amplitude for 100% Saturated Video)
R–Y Input Amplitude at Pin 16 (for 100% Saturated Video)
B–Y Input Amplitude at Pin 15 (for 100% Saturated Video)
Y Input Amplitude (without sync) at Pins 12, 13, 14 (for 100% Saturated Video)
Y Input Amplitude (with sync) at Delay Line
External 4x Subcarrier Input to Pin 8 (If crystal is not used)
External Subcarrier Input to Pin 9
Lock Range (with 4x Subcarrier Crystal specified) at Subcarrier Frequency
Burst Flag Input Threshold (Pin 18)
NTSC/PAL Select (Pin 19)
PAL Switching Amplitude: High
PAL Switching Amplitude:
Low
NTSC Select Threshold
Min
4.5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Typ
5.0
1.4
4.5 – 5.5
0.7
490
350
700
1.0
300
0.10 to 3.0
±
400
2.5
4.0
1.1
0.4
Max
5.5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Unit
Vdc
Vdc
µs
Vpp
mVpp
Vpp
mVpp
Vpp
Hz
Vdc
Vdc
ELECTRICAL CHARACTERISTICS
(TA = 25°C, VCC = 5.0 Vdc, test circuit of Figure 1.)
Characteristic
Supply Current (150
Ω
Load on Output Pins)
Color Burst Amplitude
Line–to–Line Burst Amplitude Deviation
Start after leading edge of Sync: NTSC (3.579 MHz)
Start after leading edge of Sync:
PAL (4.43 MHz)
Duration: NTSC (3.579 MHz)
Duration:
PAL (4.43 MHz)
PAL Burst Phase: Line n
PAL Burst Phase:
Line n+1
NTSC Burst Phase
Subcarrier Leakage in Black
White (100% white)
Composite Video Output (100% saturated output)
Sync Amplitude
Line–to–Line Sync Amplitude Deviation (PAL)
Luminance Amplitude Error
Line–to–Line Luminance Amplitude Deviation (PAL)
Chrominance Amplitude Error
Line–to–Line Chroma Amplitude Deviation (PAL)
Chrominance Phase Error
Line–to–Line Chrominance Phase Error (PAL)
Black Level (RGB at Black during Blanking Intervals)
Sync Tip Clamp Level above Ground
Pin
1
Min
55
250
–
–
–
–
–
125
215
170
–
–
Typ
70
300
7.0
5.0 to 5.3
5.4 to 5.6
9
10
135
225
180
–
–
Max
85
350
25
–
–
–
–
145
235
190
25
65
Unit
mA
mVpp
mV
µs
Cycles
Degrees
2&4
(@ 75
Ω
load)
2&4
(@ 75
Ω
load)
mV
2
(@ 75
Ω
load)
240
–
–
–
–
–
–
–
–
120
281
7.0
–
3.0
–
<
14
–
<
5.0
500
200
320
–
10
–
10
–
10
–
–
280
mVpp
mV
%
mVpp
%
mVpp
Degrees
mV
9–176
MOTOROLA ANALOG IC DEVICE DATA
MC13077
ELECTRICAL CHARACTERISTICS (continued)
(TA = 25°C, VCC = 5.0 Vdc)
Characteristic
Luma S–Video Output
Sync Amplitude
Line–to–Line Sync Amplitude Deviation (PAL)
Luminance Amplitude Error
Line–to–Line Luminance Amplitude Deviation (PAL)
Black Level
Sync Tip Clamp Level above Ground
Chroma S–Video Output
Chrominance Amplitude Error
Line–to–Line Chrominance Amplitude Deviation (PAL)
Chrominance Phase Error
Black Level
Pin
Min
240
–
–
–
–
120
–
–
–
–
Typ
281
7.0
–
3.0
500
200
–
<
14
–
500
Max
320
–
10
–
–
280
10
–
10
–
Unit
mVpp
mV
%
mVpp
mV
3
(@ 75
Ω
load)
4
(@ 75
Ω
load)
%
mVpp
Degrees
mV
Figure 1. Test Circuit
G
VCC
1
1.0
µF
4x Subcarrier In
8
4x fsc
Oscillator
Divide by Four
Ring Counter
R
45°
0°
90°
Divide by 512
3.58/4.43
Latch
PLL
Off
LPF
Countdown
Decoder
Burst
Flag
Adjust
Burst Flag Out/
18 Force Burst Flag
9
H/2
Hsync
Latch
H
F/F PAL
PAL/
NTSC
Switch
Chroma Out
Chroma In
19 PAL Squarewave
Out/Force NTSC
1.0
µ
R
1.0
µ
G
1.0
µ
B
14
13
12
Color
Difference
and
Luma
Matrix
R–Y Burst Flag
B–Y Burst
Flag
R–Y
B–Y
Sync
B–Y
Clamp
R–Y
Clamp
Sync
Input
Luma
Clamp
17
20
4
1.0 k
1.0 nF
Chroma
BPF
1.1 k
75
75
75
Chroma
S–Video
Luma
S–Video
3
75
75
2
Yout
10
Luma Delay
1.2 k
1.2 k
6
Yin
15
(B–Y) In
10 nF
16
(R–Y) In
10 nF
7
Sync In/
Sync Sep
10 nF
5
Luma
Clamp
11
Ground
Comp
75 Video
MOTOROLA ANALOG IC DEVICE DATA
9–177
MC13077
PIN DESCRIPTIONS
Pin
1
2
Symbol
VCC
Comp
Video
75
Ω
Zo = 75
Ω
75
Ω
1.0
kΩ
Internal Equivalent
Schematic
Description
Supply Voltage
Composite Video output. The external
75
Ω
series resistor determines the
impedance of the output. The output will
drive a 75
Ω
load through a 75
Ω
coax.
Expected Waveforms
+ 5.0 Vdc
±10%
1.0 Vpp (75% Color Saturation),
1.23 Vpp (100% Color Saturation) at
the 75
Ω
load.
3
Luma
S–Video
75
Ω
Zo = 75
Ω
75
Ω
1.0
kΩ
Luminance S–Video output. The external
75
Ω
series resistor determines the
impedance of the output. The output will
drive a 75
Ω
load through a 75
Ω
coax.
1.0 Vpp with sync (100% output) at the
75
Ω
load.
4
Chroma
S–Video
75
Ω
Zo = 75
Ω
75
Ω
1.0
kΩ
Chrominance S–Video output. The
external 75
Ω
series resistor determines
the impedance of the output. The output
will drive a 75
Ω
load through a 75
Ω
coax.
Luminance Output Clamp storage
capacitor. A 0.01
µF
capacitor should be
connected from this pin to ground.
885 mVpp (100% output) when at the
75
Ω
load.
5
Luma
Clamp
3.4 Vdc.
6
YIn
Luminance input from the delay line. The
delayed Luma from Pin 10 is applied at
this pin.
1.4 V
500 mVpp of Composite Luma when
100% saturated RGB inputs are applied.
7
Sync In/
Sync Sep
10 k
2.0 V
Composite Sync input. Negative going
sync should be applied at this pin. The
input has a threshold of 1.4 V.
The peak voltage may not exceed VCC.
Minimum voltage should not be less than
0 V. See Figure 2 for input requirements.
8
4x fsc Xtal
/4x fsc In
400
gm
gm
Vref
2.0 k
VCC
Four times Subcarrier Frequency Crystal
Oscillator pin. This pin provides for the
connection of the oscillator resonant
element. Pin may also be driven directly
with a 4x subcarrier signal.
300 to 600 mVpp 4x subcarrier input if
the pin is being externally driven.
Approximately 40 mVpp, if a crystal is
being used.
9
3.58/
4.43 MHz
In/PLL Off
10 k
External Subcarrier Input. This pin
0.10 to 3.0 Vpp (AC coupled) of
provides an input to a Phase Detector and subcarrier to phase–lock 4x oscillator or
PLL and allows phase–lock of the 4x
grounded to disable the PLL.
oscillator to an external subcarrier
reference. To disable the PLL, this pin
should be grounded. 400 Hz of pull–in and
lock–in range is possible with a crystal.
9–178
MOTOROLA ANALOG IC DEVICE DATA
MC13077
PIN DESCRIPTIONS (continued)
Pin
10
Symbol
YOut
Internal Equivalent
Schematic
10 k
10 k
1.4 V
Description
Luminance Delay Line Drive Output. A
delay should be inserted between this
pin and Pin 6 to match the delay incurred
by the Chroma.
Expected Waveforms
1.0 Vpp with sync
(100% saturated Color Bar output).
11
12
Gnd
RedIn
Ground
Red Video input.
Ground
0.7 Vpp AC coupled (100% Color Bars).
20 k
Vref
See Pin 12
See Pin 12
13
14
15
GreenIn
BlueIn
B–Y
Clamp
Green Video input.
Blue Video input.
B–Y Clamp storage capacitor. A 0.01
µF
capacitor should be connected from this
pin to ground, unless the pin is used as
an input.
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)
16
R–Y
Clamp
R–Y Clamp storage capacitor. A 0.01
µF
capacitor should be connected from this
pin to ground, unless the pin is used as
an input.
17
Chroma
Out
VCC
Chroma Bandpass Drive Output.
18
Burst Flag
Out/Force
Burst Flag
Internal
Burst
Flag
10 k
1/2 VCC
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.
1.8 Vpp burst flag pulses if unconnected.
19
PAL
Square–
wave
Out/Force
NTSC
VCC
1.4 V
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.
20
Chroma
In
10 k
10 k
2.0 V
Chroma Bandpass input. Output from
chroma bandpass filter should be
applied at this pin.
1.4 Vpp (100% Color Bars) with
bandpass filter and 1.0 kΩ matching
resistors.
MOTOROLA ANALOG IC DEVICE DATA
9–179
单片机
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