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PD72891,72893
IEEE1394 Link Layer Controller with DV Codec
Description
The PD72891 and 72893 are a IEEE1394 link layer controllers developed for digital AV systems and feature an onchip 32-bit RISC CPU (V850E) for IEEE1394 processing. These link layer controllers have two stream interface channels to transmit/receive image data conforming to the IEC61883 Standard, such as MPEG and DV, and these channels can be independently used for transmission and reception. In addition, a total of 8 Kbytes of FIFO buffer space is provided to transmit/receive isochronous signals. This buffer space can be allocated as transmit and receive FIFO buffers in 2 Kbytes units. The PD72891 and 72893 support IEEE1394 bus control and AV/C commands via the on-chip CPU, as well as external control using either a serial or a parallel interface.
Features
* All functions required for Digital AV 1394 interface are equipped in a single-chip * On chip 32-bit RISC CPU * Copy Protection circuit equipped (the PD72891 only) * Full duplex MPEG/DV transmission supported * On-chip IEC61883 function * * * * Compliant to IEEE1394-1995 and IEEE1394a-2000 Supports 400 Mbps, 200 Mbps, 100 Mbps speed 3.3 V/2.5 V power supply Package : 208-pin QFP
Block Diagram of the PD72891
ISO Stream I/F
IEEE1394 Bus
PHY
PHY Link I/F
Link Core
IEC61883 & Copy Protection IEC61883 & Copy Protection
MPEG TS I/F (8 bits)
TS I/F
Async I/F CSR Async Async Tx FIFO Rx FIFO 2 KB 2 KB Link I/F Bus Controller CPU NB85E ROM:192 KB RAM: 60 KB
27 MHz TS_CLK REC656 (8 bits)
MPEG2 Decoder
TS I/F
PCM Serial I/F
MPEG2 Encoder
DV Decoder Encoder HOST I/F
VCLKI/MCK44/MCK48 VCLKO/MCKO
SIO, Port, Timer...
16M SDRAM
CPU I/F (68k / ISA)
UART I/F
System controller can select either.
Application and Companion Chip
* Application * Set-top Box * Digital VHS, DVD-RW, AV HDD * Digital Television * Companion Chip * PD72852 : 2-port low power PHY compliant with IEEE1394a-2000
The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability and additional information.
Document No. S15787EJ1V0PF00 (1st edition) Date Published October 2001 NS CP(K) Printed in Japan
2001
Device Solution for Digital AV
IEEE1394 AV-Link
Digital AV Interface
1394 AV Link
DV Codec
DTCP Copy protection
IEEE1394 Interface
Digital AV Interface
Analog Tuner Unit NTSC/PAL Decoder Digital Tuner Unit
Coax
MPEG2 AV Encoder
MPEG2 Encoder TS/PS Mux
Stream Interface
MPEG2 AV Decoder
1394 Interface MIPS-16 MPEG2 AV CPU Decoder IDE Interface Graphics VideoEnc
MPEG2 Transcoder
Stream Interface
TS/PS Demux
DVD
HDD
Analog Television
URL
http://www.ic.nec.co.jp/
* The information in this document is current as of September, 2001. The information is subject to change without notice. For actual design-in, refer to the latest publications of NEC's data sheets or data books, etc., for the most up-to-date specifications of NEC semiconductor products. Not all products and/or types are available in every country. Please check with an NEC sales representative for availability and additional information. * No part of this document may be copied or reproduced in any form or by any means without prior written consent of NEC. NEC assumes no responsibility for any errors that may appear in this document. * NEC does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from the use of NEC semiconductor products listed in this document or any other liability arising from the use of such products. No license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC or others. * Descriptions of circuits, software and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. The incorporation of these circuits, software and information in the design of customer's equipment shall be done under the full responsibility of customer. NEC assumes no responsibility for any losses incurred by customers or third parties arising from the use of these circuits, software and information. * While NEC endeavours to enhance the quality, reliability and safety of NEC semiconductor products, customers agree and acknowledge that the possibility of defects thereof cannot be eliminated entirely. To minimize risks of damage to property or injury (including death) to persons arising from defects in NEC semiconductor products, customers must incorporate sufficient safety measures in their design, such as redundancy, fire-containment, and anti-failure features. * NEC semiconductor products are classified into the following three quality grades: "Standard", "Special" and "Specific". The "Specific" quality grade applies only to semiconductor products developed based on a customer-designated "quality assurance program" for a specific application. The recommended applications of a semiconductor product depend on its quality grade, as indicated below. Customers must check the quality grade of each semiconductor product before using it in a particular application. "Standard": Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots "Special": Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support) "Specific": Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems and medical equipment for life support, etc. The quality grade of NEC semiconductor products is "Standard" unless otherwise expressly specified in NEC's data sheets or data books, etc. If customers wish to use NEC semiconductor products in applications not intended by NEC, they must contact an NEC sales representative in advance to determine NEC's willingness to support a given application. (Note) (1) "NEC" as used in this statement means NEC Corporation and also includes its majority-owned subsidiaries. (2) "NEC semiconductor products" means any semiconductor product developed or manufactured by or for NEC (as defined above).
M8E 00. 4

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