See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

NJY | 54

Temp:

ECO Plan:

Green (RoHS & no Sb/Br)

DS125BR401SQE/NOPB


2.5/5.0/8.0 Gbps 4 Lane PCI Exprs Repeater w/ Equalization & De-Emp

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Texas Instruments DS125BR401SQE/NOPB

The DS125BR401 device is an extremely low-power high-performance multiprotocol repeater and 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 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 backplane traces of 30 inches or more or copper cables of 8 meters or more, 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.

When operating in 10G-KR, and PCIe Gen-3 mode, the DS125BR401 allows the host controller and the end point to optimize the full link and negotiate transmit equalizer coefficients. This transparency to the link training protocol can extend the maximum channel loss with minimum latency. With a low power consumption of 65 mW/channel (typical) and the option to turn off unused channels, the DS125BR401 enables energy efficient system design. A single supply of 3.3 V or 2.5 V is required to power the device.

The programmable settings can be applied easily through pins, software (SMBus or I2C), or loaded through 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.

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