Power-on reset, C-bus controlled yuv/rgb switch tda8443a – Philips TDA8443A User Manual

Page 7

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1995 Mar 07

7

Philips Semiconductors

Product specification

I

2

C-bus controlled YUV/RGB switch

TDA8443A

Table 5

Priority/fast switching bit D2

Note

1. X = don't care.

D2

FAST SWITCHING

(PIN 3)

MODE

0

X

(1)

0 to 2, depending on
D7, D6

1

0.4 V

2

Table 6

Output state control bits

Note

1. X = don't care.

D1

D0

PIN 9

FUNCTION

0

X

(1)

X

(1)

OFF

1

0

L

OFF

1

0

H

ON

1

1

X

(1)

ON

Power-on reset

If the circuit is switched on in the I

2

C-bus mode, all bits of D0 to D7 are set to zero.

Table 7

Non-I

2

C-bus mode (S2 = S1 = S0 = L)

CONTROL

MODE SWITCHED BY

FS (PIN 3)

GAIN SETTINGS

B1, B3

B2

PIN 13

PIN 14

PIN 1

A1

A4, A3, A2

L

L

L

2 or 0

1

1

1

1

L

L

H

2 or 0

1

2

1

1

L

H

L

2 or 1

1

1

−

1

0.45

L

H

H

2 or 0

1

1

−

1

0.45

H

L

L

2 or 0

2

1

1

1

H

L

H

2 or 0

2

2

1

1

H

H

L

2 or 1

2

1

−

1

0.45

H

H

H

2 or 0

2

1

−

1

0.45

Table 8

Fast switching input (pin 3)

FS

MODE SELECTED

≤

0.4 V

mode 2

1 to 3 V mode 0 or mode 1 as set by control

Table 9

ON input (pin 9)

ON

FUNCTION

L

OFF; no output signal; high impedance
OFF-state

H

function is determined in Table 7