DESCRIPTION

The Teridian 78Q8430 is a 10/100 Fast Ethernet controller supporting multi-media offload. The device is optimized for host processor offloading and throughput enhancements for demanding multi-media applications found in Set Top Box, IP Video and Broadband Media Appliance applications. The 78Q8430 seamlessly interfaces to non-PCI processors through a simplified pseudo SRAM-like Host Bus Interface supporting 32/16/8 bit data bus widths. Supported features include IEEE802.3x flow control and full IEEE802.3 and 802.3u standards compliance.

FEATURES

• Single chip 10Base-T/100Base-TX IEEE-802.3 compliant MAC and PHY

◾ Adaptive 32 kB SRAM FIFO memory allocation between Tx and Rx paths

◾ Queue independent user settable water marks

◾ Per queue status indication

• Address Resolution Controller (ARC)

◾ Multiple perfect address filtering: 8 default (max 12)

◾ Wildcard address filtering, individual, multicast and broadcast address recognition and filtering

◾ Positive/negative filtering and promiscuous mode

• 64 kB JUMBO packet support

• QoS: 4 Transmit priority levels

• Non-PCI pseudo-SRAM Host Bus Interface

◾ 8-bit, 16-bit and 32-bit bus width

◾ Big/little endian support for 16-bit/32-bit bus widths

◾ Asynchronous (100 MHz) and synchronous (50 MHz) bus clock support

• Low power and flexible power supply management

◾ Power down/save

◾ Wake on LAN (Magic Packet™, OnNow packet)

◾ Link status change

• Traffic Offload Engine Functionality

◾ Transfer frame: APF & ICMP Echo

◾ IP Firewall configuration: drop frames on source IP address

◾ IP Checksum

• Available in an industrial temperature range (-40 °C to +85 °C)

• RoHS compliant (6/6) lead-free package

APPLICATIONS

• Satellite, cable and IPTV Set Top Boxes

• Multi Media Residential Gateways

• High Definition 1080p/1080i DTVs

• IP-PVR and video distribution systems

• Digital Video Recorders/Players

• Routers and IADs

• Video over IP system, IP-PBX

• IP Security Cameras / PVRs

• Low latency industrial automation

BENEFITS

• Support for IEEE-802.3, IEEE-802.3u and IEEE-802.3-2000 Annex 31.B

• Low host CPU utilization/overhead with minimal software driver overhead and small driver memory space requirements

• Improved packet processing, low latency and low host CPU utilization

• Highest performance streaming Video over IP

• Optimized performance in mixed media application such as video, data and voice

• Ease of use, faster development cycles, high throughput

• Optimized power conservation with automatic turn on when needed

• Reduced host CPU utilization and overhead

• Improved packet processing

• Optimized performance in mixed media applications