參數(shù)資料
型號(hào)： RTL8316
英文描述： Specifications
中文描述： 規(guī)格
文件頁(yè)數(shù)： 2/22頁(yè)
文件大?。?/td> 375K
代理商： RTL8316
RTL8316
2001/11/09
Rev.1.72
2
The Realtek RTL8316 is a highly cost-effective 16-port 10/100M Fast Ethernet switch controller which integrates a 4M-bit DRAM
packet buffer, an 8K-entry look up table and a 128-entry CAM. Packaged in a 128-pin PQFP, the new chip features ultra-low power
consumption as well as port-based Home VLAN, trunking, and 2-level QoS functions. With its high integration, enhanced features
and micro-size, the RTL8316 provides an economic and optimal solution for design of stand-alone switches. The RTL8316 supports
a Reduced MII (RMII) interface and requires only one 50MHz oscillator, saving BOM cost.
1. Features
Supports up to 16 10/100Mbps Full/Half
duplex Ethernet ports with RMII interface
All ports support Speed, Duplex and
Flow-control auto-negotiation
Two ports support Speed, Duplex and
Flow-control by force-mode setting for fiber
applications
Provides non-blocking and
non-head-of-line-blocking forwarding
4M bit DRAM built in as packet storage buffer
uses page-based buffer management to
efficiently utilize the internal packet buffer
Embedded 8K entry look-up table with direct
mapping and 128 entries of CAM to eliminate
hash collision problems
Only one 50MHz OSC input for both system
clock and RMII reference clock
Supports tri-state design on MDC and MDIO
during reset period
Flow control fully supported:
z
Half-duplex: Back pressure
z
Full-duplex: IEEE 802.3x
Broadcast storm filtering control
Aging function supported
Supports Store-and-forward operation
Port Trunking supported. Four trunk groups
are provided, each consisting of 4 physical
ports. Trunk load balance is controlled by
DA/SA hash algorithm. Trunk Port LEDs
supported.
Port based HOME VLAN function
Supports QoS function on each port
z
QoS based on: (1) Port-based (2)VLAN
tag (3) TCP/IP header's TOS/DS
z
Supports two level priority queues
z
Weighted round robin service
128-pin PQFP, 3.3V single power technology
2. General Description
The RTL8316 provides 16 10/100 Mbps RMII Ethernet ports. Each port can operate in a 10 Mbps or 100 Mbps data rate, and
in full or half duplex mode. Speed, duplex, link status and flow control can be acquired by periodically polling the status of the
PHY devices via MDIO.
Two ports can support Speed, Duplex and Flow-control abilities through force setting mode for fiber applications. The address
look-up table consists of 8K entries of hash table and a 128 entries of CAM. The RTL8316 uses 13 bit MAC address direct
mapping method to search the destination MAC address and record source MAC address from and to the hash table.
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