RTL8305SC-LF Ver la hoja de datos (PDF) - Unspecified

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RTL8305SC-LF

SINGLE-CHIP 5-PORT 10/100MBPS SWITCH CONTROLLER WITH DUAL MII INTERFACES

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RTL8305SC

Datasheet

The RTL8305SC provides flexible LED functions for diagnostics. These include: Three combinations of

link, activity, speed, duplex and collision, that are ideal for bi-color LED displays. The RTL8305SC also

provides a loop detection function and alarm, for network existence notification, with an output pin that

can be designed as a visual LED or a status input pin for a CPU.

A power saving mode is implemented on a per-port basis. Each port automatically enters power saving

mode 10 seconds after the cable is disconnected from it. The RTL8305SC also implements a power down

mode 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).

Each physical layer channel of the RTL8305SC consists of a 4B5B encoder/decoder, a Manchester

encoder/decoder, a scrambler/de-scrambler, a transmit output driver, output wave shaping filters, a digital

adaptive equalizer, a PLL circuit, and a DC restoration circuit for clock/data recovery. Friendly crossover

auto detection and correction functions are also supported for easy cable connection.

The integrated chip benefits from low power consumption, advanced functions with flexible configuration

for 5-port SOHO switch, Home Gateway, xDSL/Cable router, and other IA applications.

5-port 10/100Mbps Single-Chip Dual MII Switch Controller 3

Track ID: JATR-1076-21 Rev. 1.2

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