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參數(shù)資料
| 型號： | DX161 |
| 英文描述： | Prestera?-DX161 16-Port Gigabit Ethernet Packet Processor |
| 中文描述： | 的Prestera？- DX161 16端口千兆以太網(wǎng)分組處理器 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 145K |
| 代理商： | DX161 |
PRODUCT OVERVIEW
The Marvell
at desktop Gigabit Ethernet (GbE) switches in Small-to-Medium Size Business (SMB) networks. The Prestera-DX
GbE packet processors are available in 8-port (98DX81), 16-port (98DX161) and 24-port (98DX241) conTgurations,
integrating Gigabit MACs with embedded buffer memory and integrated SERDES in each port. It is a complete
System-On-Chip (SOC) solution that supports full-wire-speed switching performance with advanced Quality of
Service (QoS) features including IEEE 802.1p, DiffServ and four priority levels per port. Addressing the cost-
sensitive unmanaged desktop switching market, the Prestera-DX81/DX161/DX241 devices enable system
vendors to design affordable, plug-and-play, high-density, small form factor standalone switches.
¨
Prestera
a
-DX family of packet processors offers new levels of integration and performance targeted
S
S
FEATURES
BENEFITS
￥
Eight, sixteen and twenty-four 10/100/1000 Mbps Ethernet ports
with MGMII interface
￥
Enables high-density, small form factor GbE switching solutions
￥
4K Media Access Control (MAC) addresses
￥
Provides large MAC table for desktop applications
￥
Integrated on-chip buffer memory and SERDES on all GbE ports
￥
SimpliTes PCB design and layout
￥
Supports manual or Auto-Negotiation setting for speed, duplex
and 802.3x ow control
￥
Provides exible and reliable control on packet transaction
￥
Four priority queues per port
￥
Provides differentiated level of support
￥
Priority assignment per 802.1p tag, Port or DiffServ Code
Point (DSCP) Teld
￥
Meets QoS requirement in SMB network environment
￥
Weighted round robin and strict priority
￥
Ensure reliable transmission of high-priority trafTc for delay-sensitive
or critical applications
￥
Multicast/broadcast rate limiting
￥
Provides network security
￥
Ease-of-design
D Only two voltage supplies: 1.2V and 2.5V
D Single 25 MHz external clock reference
D Built-in diagnostics: CRC checker, packet counters and
pattern generator
D LED interface for ports link status and system debug
￥
Enables unprecedented ease in PCB design, board bring-up and
design debug
8/16/24-Port GbE Packet Processor
Prestera
-DX81/DX161/DX241
Fig 1. Presteraa Packet Processor (98DX81/98DX161/98DX241) Block Diagram
Ingress
Control
Pipe
Egress
Control
Pipe
Enqueue
TWSI
Controller
Buffer
Management
Forwarding
Database
VID and MAC
Group Table
TxQ
Memory
Port
MAC
Port
SERDES
Port
MAC
Port
SERDES
Port
MAC
Port
SERDES
Port
MAC
Port
SERDES
Port
MAC
Port
SERDES
Port
MAC
Port
SERDES
Transmit
Queues
Buffers
Memory
DMAs
24 Network Ports with Integrated SERDES
98DX81/98DX161/98DX241
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