1 Features

1• 10.3125 Gbps Dual Lane 2:1 Mux, 1:2 Switch or

Fan-Out

• Low 390 mW Total Power (Typical)

• Advanced Signal Conditioning Features:

– Receive Equalization Up to 36 dB at 5 GHz

– Transmit De-Emphasis Up to –12 dB

– Transmit Output Voltage Control: 600 mV to

1300 mV

• Programmable Through Pin Selection, EEPROM

or SMBus Interface

• Selectable 2.5-V or 3.3-V Supply Voltage

• –40°C to 85°C Operating Temperature Range

2 Applications

• 10GE, 10G-KR

• PCIe Gen-1/2/3

• SAS2/SATA3 (Up to 6 Gbps)

• XAUI, RXAUI

3 Description

The DS100MB203 device is a dual port 2:1

multiplexer and 1:2 switch or fan-out buffer with

signal conditioning suitable for 10GE, 10G-KR

(802.3ap), Fibre Channel, PCIe, Infiniband,

SATA3/SAS2 and other high-speed bus applications

with data rates up to 10.3125 Gbps.

The continuous time linear equalizer (CTLE) of the

receiver provides necessary boost to compensate up

to 40” FR-4 or 10m cable (AWG-24) at 10.3125 Gbps

- This on-chip feature eliminates the need for external

signal conditioners. The transmitter features a

programmable amplitude voltage levels to be

selectable from 600 mVp-p to 1300 mVp-p and De-

Emphasis of up to 12 dB.

The DS100MB203 can be configured to support

PCIe, SAS/SATA, 10G-KR or other signaling

protocols. When operating in 10G-KR and PCIe Gen-

3 mode, the DS100MB203 transparently allows the

host controller and the end point to optimize the full

link and negotiate transmit equalizer coefficients. This

seamless management of the link training protocol

ensures system level interoperability with minimum

latency.

The programmable settings can be applied through

pin settings, SMBus (I2C) protocol or loaded directly

from an external EEPROM. When operating in the

EEPROM mode, the configuration information is

automatically loaded on power up, which eliminates

the need for an external microprocessor or software

driver.