Description
RTL8305SC-LF IC SMT RTL83 05 PQFP 12 RoHS Manufacturer: REALTEK
RTL8305SC Description
The RTL8305SC is a 5-port Fast Ethernet switch controller that integrates memory, five MACs, and five physical layer transceivers for 10Base-T and 100Base-TX operation into a single chip. All ports support 100Base-FX, which shares pins (TX+-/RX+-) with UTP ports and needs no SD+/- pins, a development using Realtek proprietary technology. To compensate for the lack of auto-negotiation in 100Base-FX applications, the RTL8305SC can be forced into 100Base-FX half or full duplex mode, and can enable or disable flow control in fiber mode. RTL8305SC Features
5-port integrated switch controller with memory and transceiver for 10Base-T and 100Base-TX with:
5-port 10/100M UTP or
4-port 10/100M UTP + 1-port MII/SNI or
4-port 10/100M UTP + 1-port MAC MII/SNI + 1-port PHY MII
RTL8305SC supports the fifth port MAC circuit as PHY mode MII, SNI for router applications, and MAC mode MII for HomePNA or VDSL solutions
Supports the fifth port PHY circuit as PHY mode MII for router and Gateway applications
RTL8305SC supports FEFI function for fiber application
Fully compliant with IEEE 802.3/802.3u auto-negotiation function
Built-in high-efficiency SRAM for packet buffer, with 1K entry lookup table and 16-entry CAM
RTL8305SC supports broadcast storm filtering function
RTL8305SC supports MAC and PHY loopback function for diagnosis
RTL8305SC Applications
ARP VLAN for broadcast packets
Leaky VLAN for unicast packets
VLAN tag Insert/Remove function
Flexible LED indicators for link, activity, speed, full/half duplex, and collision
LEDs blink upon reset for LED diagnostics
Optional MDI/MDIX auto crossover for plug-and-play
Optional EEPROM interface for configuration
25MHz crystal or 3.3V OSC input
Single 3.3V power input can be transformed to 1.8V via a low-cost external BJT transistor
Low power, 1.8/3.3V, 0.18μm CMOS technology, 128-pin PQFP package
Broadband gateway/firewall/VPN
Wireless LAN access point + gateway
Home networking expansion
Standalone 10/100 switch
Small workgroup switch
VoIP infrastructure switch
Manufacturer:Electronic Components
Datasheet:rtl8305sc.pdf
