VSC8504-02 datasheet(13/131 Pages) MICROSEMI

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Product Overview

VMDS-10507 VSC8504-02 Datasheet Revision 4.2

Product Overview

The VSC8504-02 is a low-power, quad-port Gigabit Ethernet transceiver with four SerDes interfaces for

quad-port dual media capability. It also includes an integrated quad port two-wire serial multiplexer

(MUX) to control SFPs or PoE modules. It has a low electromagnetic interference (EMI) line driver, and

integrated line side termination resistors that conserve both power and printed circuit board (PCB) space.

The VSC8504-02 includes dual recovered clock outputs to support Synchronous Ethernet applications.

Programmable clock squelch control is included to inhibit undesirable clocks from propagating and to

help prevent timing loops. The VSC8504-02 also supports a ring resiliency feature that allows a

1000BASE-T connected PHY port to switch between master and slave timing without having to interrupt

the 1000BASE-T link.

Using Microsemi’s EcoEthernet v2.0 PHY technology, the VSC8504-02 supports energy efficiency

features such as Energy Efficient Ethernet (EEE), ActiPHY link down power savings, and PerfectReach

that can adjust power based on the cable length. It also supports fully optimized power consumption in all

link speeds.

Microsemi's mixed signal and digital signal processing (DSP) architecture is a key operational feature of

the VSC8504-02, assuring robust performance even under less-than-favorable environmental

conditions. It supports both half-duplex and full-duplex 10BASE-T, 100BASE-TX, and 1000BASE-T

communication speeds over Category 5 (Cat5) unshielded twisted pair (UTP) cable at distances greater

than 100 m, displaying excellent tolerance to NEXT, FEXT, echo, and other types of ambient

environmental and system electronic noise. The device also supports four dual media ports that can

support up to four 100BASE-FX, 1000BASE-X fiber, and/or triple-speed copper SFPs.

The following illustrations show a high-level, general view of typical VSC8504-02 applications.

Figure 1 •

Dual Media Application Diagram

Figure 2 •

Copper Transceiver Application Diagram

1.0 V

2.5 V

1x QSGMII,

4x SGMII, or

4x 1000BASE-X MAC

VSC8504-02

4 ports dual media

(fiber or copper)

QSGMII or SGMII

MAC interface

1x QSGMII,

4x SGMII MAC, or

4x 1000BASE-X MAC

4× RJ-45

and Magnetics

4× SFPs

(fiber or copper)

SerDes

SCL/SDA

1.0 V

2.5 V

1x QSGMII,

4x SGMII, or

4x 1000BASE-X MAC

VSC8504-02

4 ports copper media

QSGMII or SGMII

MAC interface

1x QSGMII,

4x SGMII MAC, or

4x 1000BASE-X MAC

4× RJ-45

and Magnetics

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