DS64BR401
DS64BR401 is Quad Bi-Directional Transceiver manufactured by National Semiconductor.
Description
The DS64BR401 is a quad lane bi-directional signal conditioning transceiver suitable for 6.0/3.0/1.5 Gbps SATA/SAS and other high-speed bus applications with data rates up to 6.4 Gbps. The device performs both receive equalization and transmit de-emphasis on each of its 8 channels to pensate for channel loss, allowing maximum flexibility of physical placement within a system. The receiver's continuous time linear equalizer (CTLE) provides a boost of up to +33 d B at 3 GHz and is capable of opening an input eye that is pletely closed due to inter-symbol interference (ISI) induced by the interconnect medium. The transmitter features a programmable output de-emphasis driver and allows amplitude voltage levels to be selected from 600 m Vp-p to 1200 m Vp-p to suit multiple application scenarios. This Low Power Differential Signaling (LPDS) output driver is a power efficient implementation that maintains patibility with AC coupled CML receiver. The programmable settings can be applied via pin settings or SMBus interface. To enable seamless upgrade from SAS/SATA 3.0 Gbps to 6.0 Gbps data rates without promising physical reach, DS64BR401 automatically detects the ining data rate and selects the optimal de-emphasis pulse width. The device detects the out-of-band (OOB) idle and active signals of the SAS/SATA specification and passes through with minimum signal distortion. With a typical power consumption of 200 m W/lane (100 m W/ channel) at 6.4 Gbps, and control to turn-off unused channels, the DS64BR401 is part of National's Power Wise family of energy efficient devices.
Features
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- Quad lane bi-directional transceiver up to 6.4 Gbps rate Signal conditioning on input and output for extended reach Adjustable receive equalization up to +33 d B gain Adjustable transmit de-emphasis up to
- 12 d B Adjustable transmit VOD (600 m Vp-p to 1200 m Vp-p) <0.25 UI of residual DJ at 6.4 Gbps with 40” FR4 trace Automatic de-emphasis scaling based on rate...
