TDA9170 datasheet(3/22 Pages) PHILIPS

3 / 22 page

October 1994

Philips Semiconductors

Preliminary speciﬁcation

YUV picture improvement processor based

on histogram modiﬁcation

TDA9170

PINNING

SYMBOL

DESCRIPTION

DWS

default window select input

VARGAM

variable gamma input

AMPNLA

amplitude non-linearity input

ADGAM

adaptive gamma input

UIN

colour difference U input

Vref

reference supply voltage output

(+4 V)

VIN

colour difference V input

AGND

analog ground

VDDA

analog supply voltage

sandcastle input

BOF

black offset on/off input

YIN

luminance input

AMPSEL

amplitude select input

TAUBP

time constant black peak

TAUBL

time constant black loop

HM1

histogram segment memory 1

HM2

histogram segment memory 2

HM3

histogram segment memory 3

HM4

histogram segment memory 4

HM5

histogram segment memory 5

YOUT

luminance output

TAUHM

time constant histogram

measurement loop

n.c.

not connected

VDDD

digital supply voltage (+5 V)

DGND

digital ground

VOUT

colour difference V output

test option

UOUT

colour difference U output

test option

SDA

serial data input/output

(I2C-bus)

SCL

serial clock input (I2C-bus)

ADR

address select input (I2C-bus)

Fig.2 Pin configuration.

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