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RTL8370MB-CG全千兆8+2光电交换机芯片
发布时间： 2022/7/19 15:25:28 | 392 次阅读
1. General Descript_ion
The Realtek RTL8370MB is a TQFP176 E-PAD, high-performance 8+2-port Gigabit Ethernet switch. It
integrates 8 low-power Giga-PHYs that support 1000Base-T/100Base-T/10Base-T, and provides two
extra RGMII/MII/TMII/RMII/SGMII/1000Base-X/100Base-FX ports for specific applications. The
RTL8370MB implements all the functions of a high-speed switch system; including SRAM for packet
buffering, non-blocking switch fabric, and internal register management into a single CMOS device. Only
a 25MHz crystal is required; an optional EEPROM is offered for internal register configuration.
The embedded packet storage SRAM in the RTL8370MB features superior memory management
technology to efficiently utilize memory space. The RTL8370MB integrates a 4096-entry look-up table
with a 4-way XOR Hashing algorithm for address searching and learning. The table provides read/write
access from the EEPROM Serial Management Interface (SMI), and each of the entries can be configured
as a static entry. The entry aging time is between 200 and 400 seconds. Eight Filtering Database_s are used
to provide Independent VLAN Learning and Shared VLAN Learning (IVL/SVL) functions.
The Extension GMAC1 and Extension GMAC2 of the RTL8370MB implement dual RGMII/MII/TMII/
RMII interfaces for connecting with an external PHY or MAC in specific applications. This interface
could be connected to an external CPU or RISC as 8-port Gigabit Router applications. In router
applications, the RTL8370MB supports Port VID (PVID) for each port to insert a PVID in the VLAN tag
The Realtek RTL8370MB is a TQFP176 E-PAD, high-performance 8+2-port Gigabit Ethernet switch. It
integrates 8 low-power Giga-PHYs that support 1000Base-T/100Base-T/10Base-T, and provides two
extra RGMII/MII/TMII/RMII/SGMII/1000Base-X/100Base-FX ports for specific applications. The
RTL8370MB implements all the functions of a high-speed switch system; including SRAM for packet
buffering, non-blocking switch fabric, and internal register management into a single CMOS device. Only
a 25MHz crystal is required; an optional EEPROM is offered for internal register configuration.
The embedded packet storage SRAM in the RTL8370MB features superior memory management
technology to efficiently utilize memory space. The RTL8370MB integrates a 4096-entry look-up table
with a 4-way XOR Hashing algorithm for address searching and learning. The table provides read/write
access from the EEPROM Serial Management Interface (SMI), and each of the entries can be configured
as a static entry. The entry aging time is between 200 and 400 seconds. Eight Filtering Database_s are used
to provide Independent VLAN Learning and Shared VLAN Learning (IVL/SVL) functions.
The Extension GMAC1 and Extension GMAC2 of the RTL8370MB implement dual RGMII/MII/TMII/
RMII interfaces for connecting with an external PHY or MAC in specific applications. This interface
could be connected to an external CPU or RISC as 8-port Gigabit Router applications. In router
applications, the RTL8370MB supports Port VID (PVID) for each port to insert a PVID in the VLAN tag
on egress. When using this function, VID information carried in the VLAN tag will be changed to PVID.
深圳市普锐安科技有限公司 电话：0755-82567769 QQ：1490729190 邮箱：hua@szpran.com
