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©2002 Vitesse Semiconductor Corporation

The VSC7226-01 and VSC7226-02 are quad

channel parallel-to-serial and serial-to-

parallel transceiver chips designed for

use in high bandwidth data transmission

between busses, backplanes and other

subsystems. Each channel's transmitter section contains

parallel 8-bit or 10-bit SSTL_2 input circuitry, an 8B/10B

encoder, serializer and a pair of serial PECL output drivers and

additional control inputs. Each channel's receiver section

contains a pair of PECL inputs, clock and data recovery

circuitry, a deserializer, an 8B/10B decoder, elastic buffers, 8-

bit or 10-bit SSTL_2 output drivers and additional control

outputs. Each transmitter may be supplied 8-bit data which

will be encoded into 10-bit characters for transmission, or

may be supplied pre-encoded 10-bit data in which case the

internal encoder is bypassed. The four channels may operate

independently or in a synchronized mode transferring data

that is word-aligned across 16 or 32 data inputs.

VSC

GENERAL DESCRIPTION:

VSC7226 Quad 3.125Gb/s Backplane Transceiver

VSC7226

25Gb/s encoded duplex throughput

VSC7226

VSC7226

Backplane

Backplane

Copper or

Fiber Media

32

32

32

32

VSC

Backplane

VSC

LAN/WAN Serial Interface

8B/10B

Encode

T(7:0)

C/D

WSEN

8

10

PTX+

PTX-

RTX+

RTX-

PRX+

PRX-

RRX+

RRX-

Clock/

Data

Recover

10

8B/10B

Decode

Elastic

Buffer

KCHAR

8

R(7:0)

IDLE

KCH

ERR

DQ

TBC

PTXEN

RTXEN

PSDET

RSDET

RRXSEL

PLL

Clock

Gen

TXCLK

RXCLK

32-bits @

156.25 MHz

Dual-edge

Clocking

XGMII

XAUI

4x 3.125Gb/s

8B/10B

VSC7226

XCVR

Parallel Optics

@3.125Gb/s

Optics Module

VSC7640

4channel

VCSEL

Driver or

VSC7650

4channel

TIA+LA+LOS

Optics

VSC7320

10Gb/s

MAC

VSC

10GbE Parallel Optics Interface

32-bits @

156.25MHz

Dual-edge

Clocking

XGMII

10.3Gb/s

Serial Data

XAUI

VSC7226

VSC7320

10Gb/s

MAC

VSC8476

LAN

Interface

Chip

OPTICS

Signal Channel Shown