Cirrus-logic CDB4955A Manual do Utilizador descarregar pdf

Preliminary Product Information

This document contains information for a new product.

Cirrus Logic reserves the right to modify this product without notice.

P.O. Box 17847, Austin, Texas 78760

(512) 445 7222 FAX: (512) 445 7581

http://www.cirrus.com

CDB4954A/55A

Evaluation Board for CS4954/55

Features

l Demonstrates recommended layout and

grounding practices

l Supports both parallel and serial digital

video input

l On-board test pattern generation

l Supports NTSC/PAL video formats

l 3.3 V or 5 V operation

l Composite, S-Video, and RGB outputs

l Supports Standalone mode via onboard

DIP switch

l RS232 interface with PC

l Single 6-9 V external DC power supply

l Additional op-amps with open pads for

prototyping additional filters

Description

The CDB4954A/55A board allows fast evaluation of the

features of the CS4954 digital video encoders. The

board may also be configured to accept external TTL

level timing and data signals for use during system

development.

Also, to simplify the demonstration of the features of the

CS4954, the CDB4954A/55A is equipped with an on-

board microcontroller and pre-programmed FLASH

memory to facilitate configuration and evaluation of

the

CS4954 digital video encoder.

ORDERING INFORMATION

CDB4954A Evaluation Board

CDB4955A Evaluation Board

Regulator

Motorola 908

Microcontroller

+3.3V

+5V

Reset

FPGA

A/D7:0

CS4954

SDRAM

SCL

SDA_O

DB25

Reset

Switch

Data

CTL

656

DATA

HS,VS,

FIELD

TTX

OSC

54MHZ

ADDR

RD-

WR-

DAT<7..0>

RST-

TTXD,

TTXRQ

ALE

OUT

FILT

OUT

FILT

OUT

FILT

OUT

FILT

OUT

FILT

OUT

FILT

Addr

ECL

RECEIVER

656_IN

RS-232

Interface

TXD

RXD

CVBS

27MHz

PLD

EEPROM

ISP

WR-

RD-

TEST

SCL

SDA

POWER

INLET

6.5 - 10VDC

OPEN

Hdr -

16PIN

SDL

SDA

Regulator

3.3V

+5V

BNC

SMPTE-259M

Interface

656

Flash

245

BUFFER

RESET-

Hdr -

16PIN

RESET

RESET-

Data

CTL

Addr

RESET-

RCA

CONNECTORS

DIN4

CONN.

RCA

CONNECTOR

PROG

MPU

PROGRAM

HEADER

RESET-

PROGRAMMING

ENABLE

JUMPER

SELECTABLE

HI/LOW

IMPEDANCE

FILTERS

CCIR 656 SERIAL/ PARALELL

INPUTS

PC SERIAL

INTERFACE

MAY ‘01

DS278DB2

1 2 3 4 5 6 ... 19 20

CDB4954A/55A 1

Resumo do Conteúdo

Página 1 - CDB4954A/55A

Preliminary Product InformationThis document contains information for a new product.Cirrus Logic reserves the right to modify this product without not

Página 2

CDB4954A/55A10Figure 6. FPGA

Página 3

CDB4954A/55A11Figure 7. CS4954/5

Página 4

CDB4954A/55A12Figure 8. Microprocessor

Página 5

CDB4954A/55A13Figure 9. Video Output Filters

Página 6

CDB4954A/55A14Figure 10. Power/RS232 Interface

Página 7

CDB4954A/55A15Figure 11. Silkscreen Top

Página 8

CDB4954A/55A16Figure 12. Top Side

Página 9

CDB4954A/55A17Figure 13. Power Layer

Página 10

CDB4954A/55A18Figure 14. Ground Layer

Página 11

CDB4954A/55A19Figure 15. Bottom Side

Página 12

CDB4954A/55A2TABLE OF CONTENTS1. CDB4954A/55A SYSTEM OVERVIEW ... 4

Página 13

Página 14

CDB4954A/55A3LIST OF TABLESTable 1. System Connections...

Página 15

CDB4954A/55A41. CDB4954A/55A SYSTEM OVERVIEWThe CDB4954A/55A Evaluation Board allows theCS4954/55 NTSC/PAL Digital Video Encoder ICsfrom Cirrus Logic

Página 16

CDB4954A/55A5shown in Figure 2. You can directly enter the hexvalue for all bits in the register and click the OKbutton. This will set all bits at onc

Página 17

CDB4954A/55A62.2.2.2 Video Input Source OptionThis option selects the video source which willserve as input for the CS4954/55. Internal Videomeans all

Página 18

CDB4954A/55A7..ENCODER22 pF1.8 µH300Ω300 Ω330pF 270pFFigure 3. 300 Ω FiltersDRIVERENCODER22 pF2.2 µH75 Ω330 pF 270 pFFigure 4. 75 Ω FiltersTO 75 Ω L

Página 19

CDB4954A/55A8J34 GND Jumper for Dig Video InputJumperedOpenGnd ConnectedNo Gnd ConnectJ3J13J15J17J20J21J22J23J24J25J27J29J31High/Low Impedance SelectN

Página 20

CDB4954A/55A9 Figure 5. Digital Video Input

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Cirrus-logic CDB4955A Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Hardware Cirrus-logic CDB4955A. Cirrus Logic CDB4955A User Manual Manual do Utilizador

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