Texas Instruments' DS125BR800A multi-protocol repeater is capable of driving the serial-attached SCSI (SAS-3) protocol. In addition to supporting the faster data rates of the newest SCSI standard, the DS125BR800A is compatible with existing 3-Gbps and 6-Gbps SAS link rates used in data center applications. It also supports the PCI Express (PCIe) Gen-1, Gen-2, Gen-3 and SATA 1.5-Gbps, 3-Gbps and 6-Gbps interface standards. This flexibility allows equipment manufacturers to employ one device for multiple protocols with data rates up to 12.5 Gbps.
The 8-channel, unidirectional DS125BR800A consumes 35 percent less power and doubles the interconnect reach of current solutions, while enabling seamless management of the link training protocol. 24-dB input equalization and 12-dB output de-emphasis compensate for insertion loss, extending reach up to 30 inches of FR-4 or eight meters of copper cable. The repeater supports a single supply voltage, consumes a mere 65 mW per channel, and reduces cost by eliminating the need for an external reference clock and power supply filter. Multiple configuration options, including pins, SMBus or direct-EEPROM load, eliminate software programming, while each device’s flow-through pinout eases layout.
The DS125BR800AEVM evaluation module (EVM) is available today for a suggested retail price of US$499. It comes with an EVM user guide and an IBIS-AMI model that enable designers to verify board signal integrity and evaluate the device’s signal conditioning features.