RTL8328M/RTL8328S数据手册Realtek中文资料规格书

描述 Description

The RTL8328M/RTL8328S is a highly integrated Layer 2/Layer 4 management switch that offers 24-port Fast Ethernet MAC, 5-port Gigabit Ethernet MAC, 16-port Fast Ethernet PHY, and embedded 400MHz MIPS-4KEc processor. The RTL8328M/RTL8328S also provides three SerDes interface channels to connect to external PHY or fiber transceivers.
The Memory interface of the RTL8328M/RTL8328S supports SDR/DDR SDRAM and SPI Flash.
The embedded 400MHz MIPS-4KEc CPU supports 8-bit 256M-Byte DDR SDRAM, 16-bit data bus 256M-Byte DDR SDRAM, 16-bit data bus 256M-Byte SDR SDRAM (max), and 32M-Byte serial I/O, dual I/O, quad I/O SPI Flash (max).
There are 16K entries in the 4-way hash L2 table for MAC address learning and searching. The RTL8328M/RTL8328S supports two hash algorithms, and has a 64-entry CAM. An independent Multicast table supports Layer 2 and IP Multicast functions:
·       RTL8328S supports 512-entry Multicast table
·       RTL8328M supports 1K-entry Multicast table
The RTL8328M/RTL8328S has a 4K-entry VLAN table for 802.1Q port-based, protocol-and-port-based, 802.1Q-based, IP-subnet-based, and ACL rules-based VLAN operation to separate logical connectivity from physical connectivity. Support is provided for IVL (Independent VLAN Learning), SVL (Shared VLAN Learning), and IVL/SVL (Both Independent and Shared VLAN Learning) for flexible network topology architecture. The RTL8328M/RTL8328S also offers a flexible Q-in-Q function.
The ACL (Access Control List) function provides features such as parsing various protocol packet types and performing configurable actions, e.g., Permit/Drop, Redirect, and traffic policing.
·       RTL8328S supports 512-entry ACL and 512 flow counters
·       RTL8328M supports 2K-entry ACL and 1K flow counters
The RTL8328M/RTL8328S supports per-port ingress/egress bandwidth control and per-queue egress bandwidth control. It has 8 physical queues in each port. The RTL8328M/RTL8328S provides three types of packet scheduling, including SP (Strict Priority), WFQ (Weighted Fair Queuing), and WRR (Weighted Round Robin). Each port and each queue provide a rate limit function.
Port-based 802.1X and MAC-based 802.1X authentication prevent unauthorized users from accessing internal servers. The RTL8328M/RTL8328S supports port isolation to enhance port security. The RTL8328M/RTL8328S also supports a 4-set port mirror configuration to mirror ingress and egress traffic. For network management purposes, complete MIB counter support reflects the switch status in real time. Support is provided for link aggregation to increase link redundancy, and increase linear bandwidth.
The RTL8328M/RTL8328S adopts advanced technologies such as IEEE 802.3az Energy Efficient Ethernet (EEE), Realtek Cable Tester (RTCT), Unidirectional Link Detection (UDLD), Attack Prevention, and MAC Address Learning Constraints.

特性 Features

Hardware Interface
24-port 10/100M and 4-port Gigabit wire speed forwarding capability

Supports 16-port internal 10/100M Ethernet PHYs
RTL8328M/RTL8328S supports 2 pairs of 2.5Gbps RSGMII to external 4-port 10/100/1000M Ethernet PHY
RTL8328M/RTL8328S supports 2 ports GMII/RGMII/MII to external 2-port 10/100/1000M Ethernet PHY
Flexible Interfaces for Internal CPU

8-bit and 16-bit data bus 256MByte DDR SDRAM interface for internal MIPS-4KEc
16-bit data bus 256MByte SDR SDRAM interface for internal MIPS-4KEc
32MByte serial I/O, dual I/O, or quad I/O SPI Flash interface for internal MIPS-4KEc
Embedded MIPS-4KEc with MMU

MIPS32 instruction set and 5-stage pipeline
400MHz CPU clock rate
16KByte I-Cache and 16KByte D-Cache
32 Translation Look-aside Buffer (TLB) entries
Two UART interfaces to control the internal CPU via a Command Line Interface (CLI)
EEPROM SMI interface for external CPU to access internal register
EJTAG interface 
L2 VLAN Function
IVL, SVL, and IVL/SVL
IEEE 802.1Q VLAN

4K-entry VLAN Table
Port-based VLAN
Port and protocol-based VLAN
ACL-based VLAN
Supports up to 128 spanning tree instances for MSTP (IEEE 802.1s), RSTP, and STP
Flexible Q-in-Q and VLAN Tag function Cable Diagnostics (RTCT) IEEE 802.3az Energy Efficient Ethernet (EEE)  L2 MAC Function
2.5Mbit SRAM Packet Buffer
Packet length up to 2KB (FE port), 9KB (Giga port)
16K-entry L2 MAC table with 4-way hashing algorithm
RTL8328M supports independent 1K entry, and RTL8328S supports 512 entry L2/IP Multicast table for multicast function
2-hash algorithm selection for L2 table searching/learning
Aging timer range from 0.6s to 1,500,000s
IGMPv1/2/3, and MLDv1/2 snooping
Reserved Multicast Addresses processing
Limited learned L2 MAC entry on each port and each VLAN L2 Miscellaneous Functions
Broadcast, multicast, unknown- multicast, and unknown-unicast packet suppression control
Supports IEEE 802.1X

Port-based 802.1X
MAC-based 802.1X
Guest VLAN 
Traffic Mirroring

4-sets of port mirrors
Flow-based mirror function
RSPAN function for remote mirroring
sFlow for network diagnosis 
Link Aggregation (IEEE 802.3ad) for 8 groups of link aggregators with up to 8 ports per-group
Port isolation function to enhance port security
Supports Field selector
Supports Pattern matching
Supports Range Check
UniDirectional Link Detection (UDLD) Access Control List (ACL) Functions
RTL8328M supports 2K-entry ACL table
RTL8328S supports 512-entry ACL table
L2/L3/L4 format (e.g., DMAC, SMAC, and Ether-Type)
64-Byte shared Content Based Filtering
Per-flow traffic policing
Port/VID/IP range operation
32-entry VID range checking
64-entry IPv4 or 16-entry IPv6 range checking
256 leaky-buckets for flow traffic policing, in 16Kbps steps up to 1Gbps maximum
RTL8328M supports 1K log counters, and the RLT8328S supports 512 log counters, to enhance MIB count functionality
Supports action to Drop/Permit/ Redirect/Copy to CPU/Mirror/ Logging/Policing/New Inner-VID/New Outer-VID/Remove tag/Insert tag/Keep Tag/Modify tag/Routing/DSCP Priority Remarking/Rule Match indication QoS Functions
3-level Weighted Tail Drop (WTD) and Weighted Random Early Detection (WRED)
8 priority queues
Strict Priority (SP) and Weighted Fair Queue (WFQ), Weighted Round Robin (WRR) packet scheduling
Supports average packet rate control leaky-bucket per queue, in 16Kbps steps up to 1Gbps maximum
Ingress port bandwidth control, in 16Kbps steps up to 1Gbps maximum
Egress port bandwidth control, in 16Kbps steps up to 1Gbps maximum
Priority & DP remarking and DSCP remarking (includes IPv4/IPv6) Denial-of-Service attack (DoS attack) Prevention MIB Functions
Ethernet-like MIB (RFC 3635)
Interface Group MIB (RFC 2863)
RMON (RFC 2819)
Bridge MIB (RFC 1493)
Bridge MIB Extension (RFC 2674) Others
0.11µm CMOS process
3.3V/1.2V dual power input
EDHS-PBGA388 package