SiI3531 PCI Express to Serial ATA Gen II Host Controller

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Built on the proven architecture of Silicon Image's industry-leading host controllers, the SiI3531 is a single-lane PCI Express to single-port Serial ATA (SATA) II host controller that offers best in class SATA price/performance and is both flexible and robust enough for today's demanding storage applications.



The x1 PCI Express interface integrates with the latest motherboard architectures and provides a cost effective way for manufacturers to differentiate their motherboards with an eSATA port.

The SiI3531 supports all Serial ATA II features, including 3.0 Gbps SATA II transfer speeds, native command queuing, port multipliers with FIS-based switching, programmable output signal swing strengths for longer external cables or extended backplanes, hot plugging, enclosure management and ATAPI device support. The SiI3531 supports soft RAID 0, 1, 5 and 10 when connected to port multiplier such as the SiI3726.

Users familiar with the SiI3124 or SiI3132 will recognize the SiI3531 common driver structure.

End-users will appreciate the SiI3531 Windows and Linux drivers for both RAID and non-RAID operations.

The SiI3531 leverages much of the circuit innovation at the physical layer of Silicon Image's proprietary reduced overhead Multi-layer Serial Link (MSL™) architecture, pioneered and proven through its PanelLink products and extended to the SATALink and Fibre Channel SerDes storage products. MSL technology is a multilayer approach to providing cost-effective, multi-gigabit semiconductor solutions on a single chip for high-bandwidth applications.


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Latest Generation SATA II (3 Gb/s)
Small 48-pin QFN package
Port Multiplier Support with FIS based switching
Software RAID 0, 1, 5, 10 support
Host Protocol
Optimized for transaction-oriented designs; minimal host overhead
Supports two command issuance mechanisms
Efficient in both embedded and PC implementations
Reduces dependency on bridge behavior


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