NCS6415

http://onsemi.com

2

Figure 1. Block Diagram

1

3

5

6

8

10

11

20

18

17

16

15

14

13

12

27

4

9

19

Bus Decoder

INPUT1

INPUT2

INPUT3

INPUT4

INPUT5

INPUT6

INPUT7

INPUT8

GND

GND

OUTPUT1

OUTPUT2

OUTPUT3

OUTPUT4

OUTPUT5

OUTPUT6

CLOCK

PROG

DATA

The main function of the NCS6415 is to switch 8 video

input sources to the 6 outputs.

Each output can be switched to only one of the inputs,

whereas any single input may be connected to several

outputs. The lowest level of each signal is aligned on each

input (bottom of sync pulse for CVBS or Black Level for

RGB signals).

The nominal gain between any input and output is 6 dB.

For Chroma signals, the alignment is switched off by

forcing, with an external 5‘ VDC resistor bridge on the input.

Each input can be used as a normal input or as a Chroma

input (with external resistor bridge). All the switching

The switches configuration is defined by words of 16 bits:

one word of 16 bits for each output channel.

So, 6 words of 16 bits are necessary to determine the

starting configuration upon power−on (power supply: 0 to

10 V). But a new configuration needs only the words of the

changed output channels. Driving a 75

W load requires an

external transistor.