April 1993

4

Philips Semiconductors

Preliminary specification

PAL/NTSC encoder

TDA8501

Fig.2 Pin configuration.

PINNING

U and V respectively, are the terms used to describe the colour difference signals at the output of the matrix.

SYMBOL

PIN

DESCRIPTION

−(R−Y)

1

colour difference input signal, for EBU bar (75%) 1.05 V (p-p)

MCONTROL

2

multiplexer switch control input; HIGH = RGB, LOW =

−(R−Y), −(B−Y), Y

−(B−Y)

3

colour difference input signal, for EBU bar (75%) 1.33 V (p-p)

H/2

4

line pulse input/output divided-by-2 for synchronizing the internal H/2, if not used, this pin

(note 1)

Y

5

luminance input signal 1 V nominal without sync

U OFFSET

6

U modulator offset control capacitor

R

7

RED input signal for EBU bar of 75% 0.7 V (p-p)

8

supply voltage; 5 V nominal

G

9

GREEN input signal for EBU bar of 75% 0.7 V (p-p)

10

ground (0 V)

B

11

BLUE input signal for EBU bar of 75% 0.7 V (p-p)

V OFFSET

12

V modulator offset control capacitor

13

2.5 V internal reference voltage output

CHROMA

14

chrominance output

FLT

15

filter tuning loop capacitor

CVBS

16

composite PAL or NTSC output, 2 V (p-p) nominal