CS4954-CQ 查看數據表（PDF） - Cirrus Logic

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CS4954-CQ

NTSC/PAL Digital Video Encoder

Cirrus Logic 

CS4954 CS4955

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ..................................................................5

AC & DC PARAMETRIC SPECIFICATIONS ......................................................................5

RECOMMENDED OPERATING CONDITIONS ..................................................................... 5

DC CHARACTERISTICS ....................................................................................................5

AC CHARACTERISTIC .......................................................................................................7

TIMING CHARACTERISTICS .............................................................................................8

2. ADDITIONAL CS4954/5 FEATURES ...............................................................................10

3. CS4954 INTRODUCTION .................................................................................................10

4. FUNCTIONAL DESCRIPTION .........................................................................................10

4.1. Video Timing Generator .........................................................................................10

4.2. Video Input Formatter .............................................................................................11

4.3. Color Subcarrier Synthesizer ..................................................................................11

4.4. Chroma Path ..........................................................................................................11

4.5. Luma Path ..............................................................................................................12

4.6. RGB Path and Component YUV Path ....................................................................12

4.7. Digital to Analog Converters ...................................................................................12

4.8. Voltage Reference ..................................................................................................13

4.9. Current Reference ..................................................................................................13

4.10. Host Interface .........................................................................................................13

4.11. Closed Caption Services ........................................................................................13

4.12. Teletext Services ....................................................................................................14

4.13. Wide-Screen Signaling Support and CGMS ...........................................................14

4.14. VBI Encoding ..........................................................................................................14

4.15. Control Registers ....................................................................................................14

4.16. Testability ...............................................................................................................14

5. OPERATIONAL DESCRIPTION .......................................................................................14

5.1. Reset Hierarchy ......................................................................................................14

5.2. Video Timing ...........................................................................................................15

5.2.1. Slave Mode Input Interface ..........................................................................15

5.2.2. Master Mode Input Interface ........................................................................15

5.2.3. Vertical Timing .............................................................................................16

5.2.4. Horizontal Timing .........................................................................................16

5.2.5. NTSC Interlaced ..........................................................................................16

5.2.6. PAL Interlaced .............................................................................................16

5.2.7. Progressive Scan .........................................................................................17

5.2.8. NTSC Progressive Scan ..............................................................................17

5.2.9. PAL Progressive Scan .................................................................................18

5.3. ITU-R.BT656 ..........................................................................................................18

5.4. Digital Video Input Modes .......................................................................................21

5.5. Multi-standard Output Format Modes .....................................................................21

5.6. Subcarrier Generation ............................................................................................21

5.7. Subcarrier Compensation .......................................................................................21

5.8. Closed Caption Insertion ........................................................................................22

5.9. Programmable H-sync and V-sync .........................................................................22

5.10. Wide Screen Signaling (WSS) and CGMS .............................................................23

Contacting Cirrus Logic Support

For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:

http://www.cirrus.com/corporate/contacts/

Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product infor-

mation describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information

contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of

any kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights

of third parties. This document is the property of Cirrus Logic, Inc. and implies no license under patents, copyrights, trademarks, or trade secrets. No part of

this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or

otherwise) without the prior written consent of Cirrus Logic, Inc. Items from any Cirrus Logic website or disk may be printed for use by the user. However, no

part of the printout or electronic files may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical,

photographic, or otherwise) without the prior written consent of Cirrus Logic, Inc.Furthermore, no part of this publication may be used as a basis for manufacture

or sale of any items without the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers appearing

in this document may be trademarks or service marks of their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic, Inc. trade-

marks and service marks can be found at http://www.cirrus.com.

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DS278PP4

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