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Layer 2 16-Port 10/100M Switch Controller
General Description

The RTL8316E is a Layer 2 16-port 10/100M switch controller that integrates 16 MACs and 16 physical layer transceivers for 100Base-TX and 10Base-T operation.

The RTL8316E provides an 8K-entry L2 table with a 4-way hash algorithm for MAC address learning and searching. The RTL8316E supports IVL (Independent VLAN Learning), SVL (Shared VLAN Learning), and IVL/SVL (Both Independent and Shared VLAN Learning) for flexible network topology architecture. The RTL8316E has a 512-entry VLAN table and 16-entry VLAN CAM table for VLAN operation.

Per-port ingress/egress bandwidth control and per-port/per-queue egress bandwidth control are supported, with four physical queues in each port. The RTL8316E provides three types of packet scheduling, including SP (Strict Priority), WRR (Weighted Round Robin) and WFQ (Weighted Fair Queuing).

A loop-detection function provides notification of network loops. The RTL8316E also supports port mirror configuration to mirror ingress and egress traffic, and link aggregation to increase link bandwidth and redundancy.

     Hardware Interface 
  • 16-port 10/100M high performance Ethernet switch controller, and 16 FE PHYs for 100Base-TX and 10Base-T 
  • Supports SCAN LED 
  • Supports serial LED interface 
MAC Function  
  • Supports 2KB jumbo frames 
  • 8K-entry L2 MAC table with 4-way hashing algorithm 
  • Supports source MAC blocking and Destination MAC blocking 
  • Supports Reserved Multicast Addresses processing 
  • Supports MAC Address learning constraints on each port 
VLAN Function 
  • Supports IVL, SVL, and IVL/SVL 
  • Supports IEEE 802.1Q VLAN
    • 512-entry VLAN Table 
    • Port-based VLAN 
L2 Miscellaneous Functions 
  • Supports RLDP (Realtek Loop Detection Protocol) 
  • Supports cable diagnostics technology 
  • Supports broadcast, multicast, unknown- multicast, and unknown-unicast packet suppression control 
  • Supports IEEE 802.3az (Energy Efficient Ethernet, EEE) and Realtek Green Ethernet 
  • Supports TX and RX Port Mirroring 
  • Supports Link Aggregation (IEEE 802.3ad) for 4 groups of link aggregators with up to 8 ports per-group 
  • Port isolation function enhances port security 
QoS Functions 
  • Four priority queues per port 
  • Supports SP, WRR, WFQ scheduling 
  • Ingress and egress rate limiting per port 
MIB Functions 
  • RFC2819 -- RMON MIB group 1, 2, 3, 9 
  • RFC3635/RFC2863/RFC1213/RFC4188/RFC4363 
  • 55nm CMOS process 
  • 3.3V/1.2V dual-power input 
  • LQFP128 E-PAD package
  • 16-Port 10/100M Switch


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