SAA7128A Просмотр технического описания (PDF) - Philips Electronics

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SAA7128A

Digital video encoder

Philips Electronics 

Philips Semiconductors

Digital video encoder

Product specification

SAA7128AH; SAA7129AH

6 PINNING

SYMBOL PIN

RES

1

SP

2

AP

3

LLC1

4

VSSD1

5

VDDD1

6

RCV1

7

RCV2

8

MP7

9

MP6

10

MP5

11

MP4

12

MP3

13

MP2

14

MP1

15

MP0

16

VDDD2

17

VSSD2

18

RTCI

19

n.c.

20

SA

21

DUMP2

22

RED

23

C

24

VDDA2

25

GREEN

26

VBS

27

VDDA1

28

BLUE

29

CVBS

30

RSET

31

DUMP1

32

VSSA

33

XTALO

34

XTALI

35

VDDA3

36

2003 Dec 09

TYPE

−

I

I

I

supply

supply

I/O

I/O

I

I

I

I

I

I

I

I

supply

supply

I

−

I

O

O

O

supply

O

O

supply

O

O

O

O

supply

O

I

supply

DESCRIPTION

reserved pin; do not connect

test pin; connected to digital ground for normal operation

test pin; connected to digital ground for normal operation

line-locked clock input; this is the 27 MHz master clock

digital ground 1

digital supply voltage 1

raster control 1 for video port; this pin receives/provides a VS/FS/FSEQ signal

raster control 2 for video port; this pin provides an HS pulse of programmable

length or receives an HS pulse

double-speed 54 MHz MPEG port; it is an input for “ITU-R BT.656” style

multiplexed CB-Y-CR data; data is sampled on the rising and falling clock edge;

data sampled on the rising edge is then sent to the encoding part of the device;

data sampled on the falling edge is sent to the RGB part of the device (or vice

versa, depending on programming)

digital supply voltage 2

digital ground 2

real-time control input; if the LLC1 clock is provided by an SAA7111 or SAA7151B,

RTCI should be connected to the RTCO pin of the respective decoder to improve

the signal quality

not connected

select I2C-bus address; LOW selects slave address 88H, HIGH selects slave

address 8CH

current return path 2 for DAC

analog output of RED (CR) signal

analog output of chrominance (CVBS) signal

analog supply voltage 2 for analog outputs

analog output of GREEN (Y) signal

analog output of VBS (CVBS) signal

analog supply voltage 1 for analog outputs

analog output of BLUE (CB) signal

analog output of CVBS (CSYNC) signal

a resistor of 1 kΩ (Rout = 37 kΩ) connected to VSSA sets the full-scale DAC current

current return path 1 for DAC

analog ground for the DAC reference ladder and the oscillator

crystal oscillator output

crystal oscillator input; if the oscillator is not used, this pin should be connected to

ground

analog supply voltage 3 for the DAC reference ladder and the oscillator

6

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