Fujitsu (Fujitsu Microelectronics Europe ) : MB86676

KeyStream - Access Controller

The KeyStream? is a combined RISC and ATM SAR device with dedicated MPEG Transport Stream extraction and USB Interface. It is based around a high performance ARC microprocessor core running at 108MHz providing significant processing capability.

The KeyStream? includes hardware support for ATM Adaptation Layer 5 (AAL5) with software based traffic management of CBR and UBR traffic classes. Transparent modes are also available for the support of other AALs in software (eg. AAL2). A Coprocessor Interface is provided to allow external data processing devices access to all KeyStream TM functions.

The KeyStream? is ideally suited to a wide variety of applications, such as Home Gateway and Set Top Box, with tightly coupled integration to Fujitsu?s MB86670 KeyWave? ADSL Modem and MPEG2 Decoder devices.

Features

• ATM Adaptation Layer standard type 5 (AAL5)
• Simultaneous segmentation and reassembly on up to 32 VCs
• CBR and UBR traffic classes with software based traffic management compliant to TM4.1
• Configurable 8 bit Utopia interface provides ATM connectivity (Utopia Level 1/2 master/slave)
• High performance 32-bit embedded ARC microprocessor providing over 100 MIPs
• 4k-byte dedicated load/store RAM and 8k-byte dedicated instruction cache
• 4k-byte SRAM for general purpose data storage (eg. temporary packet buffer)
• MPEG2 Transport Stream extraction from ATM connection including content based filtering and de-encapsulation
• Delivery via an 8-bit MPEG Transport Stream interface to MPEG2 Decoder
• Full speed USB Function interface for network connectivity requiring no external transceiver
• Software based data transfer management with API for user program support
• 32/16-bit SDRAM/Flash interface supports KeyWave? host control
• 8/16-bit Coprocessor Interface to external master (eg. MPEG2 Decoder)
• Up to 36 GPIO pins available (dependent on configuration)
• Lightweight software operation for reduced component systems
• JTAG compliant to IEEE1149.1
• Fabricated in CMOS technology with 3.3 I/O, 2.5V core in a QFP208 package
• -40°C to +85°C Industrial temperature range

Information used to be available at:

http://www.fme.fujitsu.com/products/atm/mb86676.html and
http://www.fmal.fujitsu.com/systemsolutions/broadband_ATM_05.html

Technology:	CMOS
Package:	PQFP 208 Pin