CDB4954 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

CDB4954

NTSC/PAL Digital Video Encoder

Cirrus Logic 

CS4954 CS4955

Pin Name

Pin Number

Type

Description

V [7:0]

8, 7, 6, 5, 4, 3, 2, 1

IN Digital video data inputs

CLK

29

IN 27 MHz input clock

PADDR

16

IN Address enable line

XTAL_IN

15

IN subcarrier crystal input

XTAL_OUT

14

OUT subcarrier crystal output

HSYNC/CB

10

I/O Active low horizontal sync, or composite blank signal

VSYNC

11

FIELD/CB(1)

9

I/O Active low vertical sync.

OUT(1) Video field ID. Selectable polarity or composite blank

RD

27

IN Host parallel port read strobe, active low

WR

28

IN Host parallel port write strobe, active low

PDAT [7:0] 19, 20, 21, 22, 23, 24, 25, 26 I/O Host parallel port/ general purpose I/O

SDA

32

I/O I²C data

SCL

33

IN I²C clock input

CVBS

44

CURRENT Composite video output

Y

48

CURRENT Luminance analog output

C

47

CURRENT Chrominance analog output

R

39

CURRENT Red analog output

G

40

CURRENT Green analog output

B

43

CURRENT Blue analog output

VREF

38

I/O Internal voltage reference output or external reference

input

ISET

37

CURRENT DAC current set

TTXDAT

30

IN Teletext data input

TTXRQ

31

OUT Teletext request output

INT

12

OUT Interrupt output, active high

RESET

34

IN Active low master RESET

TEST

13

IN TEST pin. Ground for normal operation

VAA

36, 41, 46

PS

+ 5 V or + 3.3 V supply (must be same as VDD)

GNDD

18

PS Ground

VDD

17

PS +5 V or 3.3 V supply (must be same as VAA)

GNDA

35, 42, 45

PS Ground

Table 10. Device Pin Descriptions

NOTE: 1. The FIELD pin (pin 9) remains an output pin in SLAVE mode. However, the FIELD pin state does not

toggle in SLAVE mode and its output state should be considered random.

DS278F6

57

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