The DS125BR401A is an extremely low-power high-performance repeater/redriver designed to
support four lanes carrying high speed interface up to 12 Gbps. The B-Side receiver’s continuous
time linear equalizers (CTLE) provide high frequency boost of up to +24 dB at 6 GHz (12 Gbps) and
are capable of opening an input eye that is completely closed due to inter symbol interference
(ISI) induced by interconnect medium such as backplane traces or twinaxial copper cables. The
programmable equalization allows maximum flexibility in the physical placement within the
interconnect channel. The A-Side channel has a 10 dB linear equalizer and linear output
driver.
The A-Side channel has a settable 3-10 dB linear equalizer coupled to a linear output
driver. When operating in SAS-3 and PCIe Gen-3 applications the DS125BR401A preserves transmit
signal characteristics allowing the host controller and the end point to negotiate transmit
equalizer coefficients. This transparency to the link training protocol aides system level
interoperability and minimum latency.
The programmable settings can be applied easily via Terminals, software (SMBus or I2C),
or loaded via an external EEPROM. In EEPROM mode, the configuration information is automatically
loaded on power up, which eliminates the need for an external microprocessor or software
driver.
The DS125BR401A is an extremely low-power high-performance repeater/redriver designed to
support four lanes carrying high speed interface up to 12 Gbps. The B-Side receiver’s continuous
time linear equalizers (CTLE) provide high frequency boost of up to +24 dB at 6 GHz (12 Gbps) and
are capable of opening an input eye that is completely closed due to inter symbol interference
(ISI) induced by interconnect medium such as backplane traces or twinaxial copper cables. The
programmable equalization allows maximum flexibility in the physical placement within the
interconnect channel. The A-Side channel has a 10 dB linear equalizer and linear output
driver.
The A-Side channel has a settable 3-10 dB linear equalizer coupled to a linear output
driver. When operating in SAS-3 and PCIe Gen-3 applications the DS125BR401A preserves transmit
signal characteristics allowing the host controller and the end point to negotiate transmit
equalizer coefficients. This transparency to the link training protocol aides system level
interoperability and minimum latency.
The programmable settings can be applied easily via Terminals, software (SMBus or I2C),
or loaded via an external EEPROM. In EEPROM mode, the configuration information is automatically
loaded on power up, which eliminates the need for an external microprocessor or software
driver.