參數(shù)資料
型號(hào)： RTL8308B
廠商： Electronic Theatre Controls, Inc.
英文描述： REALTEK SINGLE CHIP 8-PORT 10/100 ETHERNET SWITCH CONTROLLER WITH EMBEDDED MEMORY
中文描述： 瑞昱單片8端口10/100以太網(wǎng)交換機(jī)控制器，嵌入式存儲(chǔ)器
文件頁(yè)數(shù)： 3/28頁(yè)
文件大?。?/td> 397K
代理商： RTL8308B
RTL8308B
2002/01/23
Rev. 2.0
3
2. General Description
The RTL8308B is a 128-pin, low cost and ultra low power consumption 8-port 10/100M Ethernet switch controller.
It is integrated both with a 2M bit embedded DRAM, as a packet buffer, and an 8K entry address table. The
RTL8308B supports the reduced MII (RMII) interface. Only a single 50MHz oscillator is needed and the
EEPROM is optional, which can save BOM costs. In addition, the RTL8308B provides an LED display to indicate
a network loop existence.
The RTL8308B provides eight 10/100 Mbps RMII Ethernet ports. Each port can operate in 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.
The address look-up table consists of an 8K entry hash table and a 128 entry CAM. The RTL8308B uses the
address hashing algorithm or direct mapping method to search destination MAC addresses from and record source
MAC addresses to the hash table. Data received from the MAC interface is stored in the external memory buffer.
The RTL8308B supports IEEE 802.3x full duplex flow control and half duplex back pressure control. The ability
of IEEE 802.3x flow control is auto-negotiated by writing the flow control ability via MDIO. The reversible
PHYAD order feature is provided to connect diverse external PHY devices for PCB layout.
The RTL8308B provides a loop detect LED for visual diagnostics when detecting the network loop. The Broadcast
storm filtering function is provided for unusual broadcast storm traffic.
The RTL8308B supports non-blocking 148800 packets/second wire speed forwarding rate and a special design to
resolve the head-of-line-blocking problem. The RTL8308B uses a 2-wire 24LC02 interface to access the external
serial EEPROM, which is not required. Only one 50MHz OSC is needed.
Realtek
RTL8308B
Quad-PHY
50MHz
OSC
EEPROM2
4LC02
Quad-PHY
10/100 Mbps x 8
Example of 8-port Switch System diagram
相關(guān)PDF資料
PDF描述
RTL8309SB SINGLE-CHIP 9-PORT 10/100MBPS SWITCH CONTROLLER
RTS0072 VOICE CHANGER
RTS0072B VOICE CHANGER
RU4D SDR Cable Assembly; Connector Type A:micro D Ribbon Plug; Connector Type B:micro D Ribbon Plug; Cable Length:2m; No. of Contacts:26; Pitch Spacing:0.8mm RoHS Compliant: Yes
RU4D Damper Diodes (For Display)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RTL8309SB 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SINGLE-CHIP 9-PORT 10/100MBPS SWITCH CONTROLLER
RTL8309SB-LF 制造商:Realtek Semiconductor 功能描述:RTL8309 Series 9 Port 10/100 Mbps Ethernet Switch Controller - PQFP-128 制造商:Realtek 功能描述:RTL8309 Series 9 Port 10/100 Mbps Ethernet Switch Controller - PQFP-128
RTL8316 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Specifications
RTL8363S-GR 制造商:Realtek Semiconductor 功能描述:
RTL8801 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Specifications
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