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CS7808: DescriptionMULTI PURPOSE AUDIO/VIDEO EMBEDDED PROCESSOR; File Size521KB，52 Pages; ManufacturerCirrus Logic; Websitehttp://www.cirrus.com

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CS7808 Overview

MULTI PURPOSE AUDIO/VIDEO EMBEDDED PROCESSOR

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CS7808

Multi-Purpose Audio/Video Embedded Processor

Features

Dual 32-bit RISC processors (81 MIPS each)

32-bit DSP (81 MIPS)

Digital video input for Picture-in-Picture (PIP)

On-screen display generator

8-bit graphic engine with advanced vertical flicker filter

Programmable audio decoder

MPEG1 & MPEG2 video decoder

System interface supports ATAPI CD loaders and

hard disk drives

Host interface supports peripherals such as 10/100

Ethernet controllers, DSPs, etc.

V.90 soft-modem support

AC'97 link support

2 channels of audio input

8 channels of audio output

2 channel IEC60958 transmitter

Remote control input support

Large number of GPIO increases design flexibility

On-chip PLLs generate system clocks from 27 MHz

SDRAM, SGRAM, and Flash memory support

Available in a 208 pin MQFP

Description

The CS7808 processor is a single chip solution that pro-

vides all of the processing functions you need for a broad

range of audio and video applications including thin me-

dia clients, CD recorders, advanced set-top boxes,

interactive TV and much more. It supports all CD for-

mats, disk control, video decoding and up to eight

channels of output. Achieve new levels of performance

with 240 highly configurable MIPS of processing power.

Its flexible set of design features maximizes perfor-

mance, reduces system complexity, and minimizes

system cost. CS7808 is the perfect choice.

Working on your next consumer entertainment product

design? Combine CS7808 with other Cirrus mixed-sig-

nal converters, DSP chips, and factory firmware for a

highly integrated platform crucial for Video-on-demand,

set-top boxes, and other similar platforms. CS7808 is a

Total-E™ (Total Entertainment) IC solution specifically

designed for consumer entertainment electronics.

ORDERING INFORMATION

CS7808-CM

0° to 70° C

208-pin MQFP

RISC-1

I-Cache

MM U

D-Cache

M AC

RISC-2

I-Cache

MM U

D-Cache

M AC

Mem ory Controller

SDRAM Control

Flash Control

32-Bit DSP

I-Cache

X,Y Data

M em ory

CPU / MAC

Audio/IO

PCM Out

PCM In

XMT958

Video Input

Filter

Scaler

Clock Manager

Subpicture Decode

Dataflow Engine

DM A / BitBlit

System Controls

SRAM Buffer

STC

Interupts

Registers

Scaler

MPEG Decoder

VLC Parser

RAM

IDCT

M oCo

Video Processor

On-Screen Display

Picture-in-Picture

Video/Graphics Display

External I/Os

Rem ote Input

GPIOs

SDRAM

Host

Interface

Preliminary Product Information

P.O. Box 17847, Austin, Texas 78760

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

http://www.cirrus.com

This document contains information for a new product.

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



Cirrus Logic, Inc. 2002

MAR ‘02

DS554PP1

CS7808

TABLE OF CONTENTS

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

1.1 AC and DC Parametric Specifications ............................................................................... 5

1.1.1 Absolute Maximum Rating .................................................................................... 5

1.1.2 Recommended Operating Conditions ................................................................... 5

1.1.3 Electrical Characteristics ...................................................................................... 6

1.2 DC Characteristics ............................................................................................................. 7

1.2.1 Host Interface ........................................................................................................ 7

1.2.2 SDRAM Interface .................................................................................................. 8

1.2.3 ROM/NVRAM Interface ...................................................................................... 10

1.2.4 Video Output Interface ........................................................................................ 11

1.2.5 Video Input Interface ........................................................................................... 12

1.2.6 Audio Input Interface ........................................................................................... 13

1.2.7 Audio Output Interface ........................................................................................ 14

1.2.8 AC97/CODEC Interface ...................................................................................... 15

1.2.9 Miscellaneous Interface Timing ........................................................................... 16

2. TYPICAL APPLICATION ........................................................................................................ 17

3. FUNCTIONAL DESCRIPTION ............................................................................................... 18

3.1 Block Diagram .................................................................................................................. 18

3.2 CS7808 Device Details .................................................................................................... 18

3.2.1 RISC-32 Processors ........................................................................................... 18

3.2.2 Powerful 32-Bit DSP ........................................................................................... 18

3.2.3 System Controls .................................................................................................. 18

3.2.4 Memory Controller ............................................................................................... 19

3.2.5 Data Flow Engine ................................................................................................ 19

3.2.6 Audio Interface .................................................................................................... 19

3.2.7 Video Input .......................................................................................................... 19

3.2.8 External Interface ................................................................................................ 19

3.2.9 Video Processor .................................................................................................. 19

3.2.10 Cursor ............................................................................................................... 19

3.2.11 System Functions .............................................................................................. 20

3.3 RISC Processor ............................................................................................................... 20

3.4 DSP Processor ................................................................................................................ 20

3.5 Memory Control ............................................................................................................... 20

3.6 Dataflow Control (DMA) ................................................................................................... 20

3.7 System Control Functions ................................................................................................ 20

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 information de-

scribes 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).

Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All prod-

ucts are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and

limitation of liability. No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, including use of this information as the basis for manufacture or sale

of any items, nor for infringements of patents or other rights of third parties. This document is the property of Cirrus Logic, Inc. and by furnishing this information, Cirrus

Logic, Inc. grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights of Cirrus

Logic, Inc. Cirrus Logic, Inc., copyright owner of the information contained herein, gives consent for copies to be made of the information only for use within your organization

with respect to Cirrus Logic integrated circuits or other parts of Cirrus Logic, Inc. The same consent is given for similar information contained on any Cirrus Logic web site

or disk. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. 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. trademarks and service marks can be found

http://www.cirrus.com.

Purchase of I2C components of Cirrus Logic, Inc., or one of its sublicensed Associated Companies conveys a license under the Phillips I2C Patent Rights to use those

components in a standard I2C system.

CS7808

3.8 Host Interface .................................................................................................................. 21

3.9 MPEG Video Decoding .................................................................................................... 21

3.10 Audio Processing ........................................................................................................... 21

3.11 Soft Modem ................................................................................................................... 21

3.12 Video ............................................................................................................................. 21

MEMORY MAP ....................................................................................................................... 23

4.1 Processor Memory Map .................................................................................................. 23

4.2 Host Port Memory Map .................................................................................................... 23

4.3 Internal I/O Space Map .................................................................................................... 23

REGISTER DESCRIPTION .................................................................................................... 24

5.1 CS7808 Register Space .................................................................................................. 24

PIN DESCRIPTION ................................................................................................................. 33

6.1 Pin Assignments .............................................................................................................. 34

6.2 Miscellaneous Interface Pins ........................................................................................... 40

6.3 SDRAM Interface ............................................................................................................. 41

6.4 ROM/NVRAM Interface ................................................................................................... 42

6.5 Video Output Interface ..................................................................................................... 43

6.6 Video Input Interface ....................................................................................................... 44

6.7 Audio Output/Input Interface ............................................................................................ 45

6.8 AC97/CODEC Interface ................................................................................................... 46

6.9 Host Master/ATAPI Interface ........................................................................................... 47

6.10 General Purpose Input/Output (GPIO) .......................................................................... 48

6.11 Power and Ground ........................................................................................................ 49

PACKAGE SPECIFICATIONS ............................................................................................... 50

LIST OF FIGURES

Figure 1. Host Timing Diagram .................................................................................................... 7

Figure 2. SDRAM Refresh Transaction ....................................................................................... 8

Figure 3. SDRAM Burst Write Transaction .................................................................................. 8

Figure 4. SDRAM Burst Read Transaction .................................................................................. 9

Figure 5. SDRAM Timing ............................................................................................................. 9

Figure 6. ROM/RVRAM Timing.................................................................................................. 10

Figure 7. Video Output Timing .................................................................................................. 11

Figure 8. Video Input Timing...................................................................................................... 12

Figure 9. Audio Input Timings .................................................................................................... 13

Figure 10. Audio Output Timing ................................................................................................. 14

Figure 11. CODEC Timing ......................................................................................................... 15

Figure 12. Miscellaneous Timing ............................................................................................... 16

Figure 13. CS7808 Typical Application...................................................................................... 17

Figure 14. CS7808 Block Diagram ............................................................................................ 18

Figure 15. CS7808 Pinouts........................................................................................................ 33

Figure 16. 208-Pin Package Drawing ........................................................................................ 50

LIST OF TABLES

Table 1. Host Interface Symbols / Characterization Data ............................................................ 7

Table 2. SDRAM Interface Symbols and Characterization Data ................................................. 8

Table 3. ROM/NVRAM Interface Symbols and Characterization Data ...................................... 10

Table 4. Video Output Interface Symbols and Characterization Data ....................................... 11

Table 5. Video Input Interface Symbols and Characterization Data .......................................... 12

Table 6. Audio Input Interface Symbols and Characterization Data .......................................... 13

Table 8. AC97/CODEC Interface Symbols and Characterization Data ..................................... 15

CS7808

Table 9. Miscellaneous Interface Symbols and Characterization Data...................................... 16

Table 10. Memory Map-RISC0 Processor ................................................................................. 23

Table 11. Host Port Memory Map .............................................................................................. 23

Table 12. Internal I/O Space Map .............................................................................................. 23

Table 13. CS7808 Register Map and Blocks ............................................................................. 24

Table 14. CS7808 Registers ...................................................................................................... 24

Table 15. Pin Type Legend ........................................................................................................ 33

Table 16. 208-Pin Package Assignments .................................................................................. 34

Table 17. Miscellaneous Interface Pins ..................................................................................... 40

Table 18. SDRAM Interface ....................................................................................................... 41

Table 19. ROM/NVRAM Interface.............................................................................................. 42

Table 20. Video Output Interface ............................................................................................... 43

Table 21. Video Input Interface .................................................................................................. 44

Table 22. Audio Input/Output Interface ...................................................................................... 45

Table 23. AC97/CODEC Interface ............................................................................................. 46

Table 24. Host Master/ATAPI Interface ..................................................................................... 47

Table 25. General Purpose I/O Interface ................................................................................... 48

Table 26. Power and Ground .................................................................................................... 49

CS7808 Related Products

	CS7808	CS7808-CM
Description	MULTI PURPOSE AUDIO/VIDEO EMBEDDED PROCESSOR	MULTI PURPOSE AUDIO/VIDEO EMBEDDED PROCESSOR

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