DS125BR401 4-Lane PCI Repeater


TI's 2.5/5.0/8.0 Gbps repeater/redriver with equalization and de-emphasis

Texas Instruments' DS125BR401 is an extremely-low-power, high-performance, multi-protocol repeater/redriver designed to support four lanes of PCIe Gen-3/2/1, 10G-KR, and other high-speed interface serial protocols up to 12.5 Gbps. The receiver's continuous time linear equalizer (CTLE) provides a boost of up to +30 dB at 6.25 GHz (12.5 Gbps) in each of its eight channels; and is capable of opening an input eye that is completely closed due to inter symbol interference (ISI) induced by interconnect medium such as 30 in+ backplane traces or 8 m+ copper cables, hence enabling host controllers to ensure an error-free end-to-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.

Features
  • Comprehensive family, proven system interoperability
    • DS125BR111: one-lane bidirectional repeater
    • DS125BR210: two-channel unidirectional repeater
    • DS125BR401: four-lane bidirectional repeater
    • DS125BR800: eight-channel unidirectional repeater
    • DS125MB203: two-port 2:1/1:2 mux/switch
    • DS125DF410: four-channel unidirectional retimer with CDR
  • Low 65 mW/channel (typ) power consumption, with option to power-down unused channels
 
  • Transparent management of link training protocol for PCIe and 10G-KR
  • 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 via pin selection, EEPROM, or SMBus interface
  • Single supply voltage: 2.5 V or 3.3 V (selectable)

DS125BR401 4-Lane PCI Repeater

Manufacturer Part Number Description Available Quantity Datasheets
DS125BR401SQE/NOPB IC REDRIVER PCIE/SAS/SATA 54WQFN 91

Evaluation Module

Manufacturer Part Number Description Available Quantity Datasheets
DS125BR401EVM EVALUATION MODULE FOR DS125BR401 3