MC13077P データシートの表示（PDF） - Motorola => Freescale

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MC13077P

ADVANCED PAL/NTSC ENCODER

Motorola => Freescale 

Pin Symbol

10 YOut

11 Gnd

12 RedIn

MC13077

Internal Equivalent

Schematic

10 k

10 k

1.4 V

PIN DESCRIPTIONS (continued)

Description

Expected Waveforms

Luminance Delay Line Drive Output. A

delay should be inserted between this

pin and Pin 6 to match the delay incurred

by the Chroma.

1.0 Vpp with sync

(100% saturated Color Bar output).

Ground

Red Video input.

Ground

0.7 Vpp AC coupled (100% Color Bars).

13 GreenIn

14 BlueIn

15 B–Y

Clamp

16 R–Y

Clamp

17 Chroma

Out

20 k

Vref

See Pin 12

See Pin 12

VCC

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.

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.

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.

Chroma Bandpass Drive Output.

2.8 Vpp (100% Color Bars)

18 Burst Flag

Out/Force

Burst Flag

Internal

Burst

Flag

10 k

1/2 VCC

19 PAL

Square–

wave

Out/Force

NTSC

VCC

1.4 V

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.

1.8 Vpp burst flag pulses if unconnected.

PAL/NTSC system switch. If grounded,

the MC13077 will encode NTSC, and if

left open, PAL.

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

5

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