1 Features

1• Comprehensive Family, Proven System Inter-

Operability

– DS125BR111: One-Lane Repeater

– DS125BR401: Four-Lane Repeater

– DS125BR800: Eight-Channel Repeater

– DS125MB203: Two-Port 2:1/1:2 Mux/Switch

– DS125DF410: Four-Channel Retimer With

CDR

• Low 65-mW/Channel (Typical) Power

Consumption, With Option to Power Down

Unused Channels

• Non-Limiting Output for PCIe and 10G-KR Link

Training Support

• Advanced Signal Conditioning Features

– Receive Equalization up to 30 dB at 6.25 GHz

– Transmit De-Emphasis up to –12 dB

– Transmit Output Voltage Control: 700 mV to

1300 mV

• Programmable Through Pin Selection, EEPROM,

or SMBus Interface

• Single Supply Voltage: 2.5 V or 3.3 V (Selectable)

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

• 3-kV HBM ESD Rating

• Flow-Thru Pinout: 54-Pin WQFN (10-mm × 5.5-

mm, 0.5-mm Pitch)

• Supported Protocols

– sRIO, Infiniband, Interlaken, CPRI, OBSAI

– Other Proprietary Interface up to 12.5 Gbps

2 Applications

• SAS/SATA (up to 6 Gbps), Fibre Channel (up to

10GFC)

• PCIe Gen-3/2/1, 10G-KR, 10GbE, XAUI, RXAUI

3 Description

The DS125BR800 device is an extremely low-power

high-performance multiprotocol repeater/redriver

designed to support eight channels of PCIe Gen-

3/2/1, 10G-KR, and other high-speed interface serial

protocols up to 12.5 Gbps. The continuous time linear

equalizer (CTLE) of the receiver provides a boost of

up to

+30 dB at 6.25 GHz (12.5 Gbps) in each of its eight

channels and can open an input eye that is

completely closed due to intersymbol interference

(ISI) induced by interconnect medium such as 30in+

backplane traces or 8m+ copper cables, hence

enabling host controllers to ensure an error-free endto-

end link. The transmitter provides a de-emphasis

boost of up to –12 dB and output voltage amplitude

control from 700 mV to 1300 mV to allow maximum

flexibility in the physical placement within the

interconnect channel.