SATA repeater devices exhibit low dynamic power - Embedded.com

SATA repeater devices exhibit low dynamic power

Sunnyvale, Calif.—Parade Technologies Ltd. has introduced two SATA (Serial Advanced Technology Attachment) bidirectional repeater ICs that exhibit very low dynamic power characteristics.

Aimed at driving eSATA (external SATA) receptacles in mobile and green PC applications, the PS8511 and PS8515 support SATA 1.5-Gbit/s and SATA 3.0-Gbit/s interfaces, the industry standard data transfer protocols for external PC disk drives. The PS8515 includes an I²C port for advanced feature support, while the PS8511 supports all basic SATA requirements.

In active data transfer mode, the 1.5V version of the new devices consumes less than half the power required by the most power-efficient competing devices in the market today, according to Parade Technologies. The PS8511 and PS8515 offer an automatic power management feature. By taking advantage of the “bursty” nature of SATA data transfers, the devices automatically enter a low-power state when the bus is idle. Upon resumption of data activity, the device becomes active again with an exit latency of 10ns. The result is an over 60% power savings during data transfer, when compared to competitive devices, the company said.

The PS8511 and PS8515 also offer the ability to adjust both receiver equalization and output pre-emphasis to compensate for PCB trace and cable characteristics. The devices operate from a single voltage supply, and are offered in both 1.5V or 3.3V supply options. The PS8511 provides a pinout that matches several existing SATA devices, enabling rapid design conversion to these new parts. All of the devices can be set for both SATA and eSATA output levels.

The PS8511 and PS8515 series also set a new standard in ESD protection, having an ESD rating of HBM 8kV, CDM 2kV, and MM 400V. This enables the devices to interface the eSATA receptacle directly without the use of additional ESD protection devices, saving both PCB board space and additional system cost.

The PS8511 and PS8515 series devices are available in a 4x4mm 20-pin QFN package.

Pricing: $1.20 each in volume.
Availability: Now.
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Parade Technologies Inc., www.paradetech.com

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