RTL8306SD/RTL8306SDM
Datasheet
processor. For IGMP/MLD snooping application, each of the 2K entries can be configured as a multicast
entry that indicates the matched packets will be forwarded to the specific multi ports. For IEEE 802.1x
application, each of the 2K entries can be configured as an authorized or unauthorized entry.
Maximum packet length can be 1536 or 1552 bytes according to the initial configuration (strapping upon
reset). Three types of independent storm filter are provided to filter packet storms, and an intelligent
switch engine prevents Head-of-Line blocking problems. The filtering function is supported for
IEEE 802.1D specified reserved multicast addresses (01-80-C2-00-00-02 and 01-80-C2-00-00-04 to 01-
80-C2-00-00-0F).
The RTL8306SD/RTL8306SDM provides flexible LED functions for diagnostics, with four combination
modes. An externally managed processor can control the LED through SMI.
A power saving mode is implemented on a per-port basis. Users can set MII Reg.0.11 to force the
corresponding port to enter power down mode, which disables all transmit/receive functions, except SMI
(MDC/MDIO management interface).
To simplify the peripheral circuit, the RTL8306SD/RTL8306SDM can use a low-cost PNP transistor to
generate 1.8V from a 3.3V power supply.
6-Port 10/100Mbps Single-Chip Dual MII/RMII Switch Controller
2
Track ID: JATR-1076-21 Rev. 1.1
REALTEK [ Realtek Semiconductor Corp. ]
