The JMicron JMB351-LGHA0B is a single-chip, PCI Express to single-port eSATA II host controller. It provides a high-performance and reliable solution for connecting external SATA devices to a computer system via the PCI Express interface. This chip is designed to be compliant with both the PCI Express Base Specification Revision 1.0a and the Serial ATA II Specification Revision 1.0a, ensuring broad compatibility and interoperability.

Applications

• External Hard Drive Enclosures
• RAID Storage Systems
• Motherboard Integration for eSATA Ports
• Industrial PCs
• Embedded Systems

Features

• PCI Express x1 interface compliant with PCI Express Base Specification Revision 1.0a.
• Single-port eSATA II host controller compliant with Serial ATA II Specification Revision 1.0a.
• Supports SATA II data transfer rates of up to 3.0 Gbps.
• Supports Native Command Queuing (NCQ) for enhanced performance.
• Integrated PHY for SATA II signaling.
• Supports hot-plugging and hot-swapping of SATA devices.
• Supports Port Multiplier with Command-based and FIS-based switching.
• Internal DMA engine to offload CPU processing.
• Supports Spread Spectrum Clocking (SSC) to reduce EMI.

Benefits

• High-speed data transfer rates for external storage devices.
• Improved system performance through NCQ and DMA support.
• Easy integration into existing systems with PCI Express interface.
• Increased storage capacity through support for external SATA drives.
• Reliable and stable operation with SATA II compliance.
• Convenient hot-plugging and hot-swapping capabilities.
• Enhanced data protection through RAID configurations (depending on system implementation).

Additional Details

The JMB351-LGHA0B typically requires a 3.3V power supply. It is available in a LQFP package. It supports various operating systems, including Windows and Linux. The chip's low power consumption makes it suitable for both desktop and mobile applications. Proper heat dissipation measures should be taken to ensure reliable operation, especially in high-performance applications. Drivers are usually required for optimal functionality; these are generally available from JMicron's website or the motherboard/enclosure manufacturer's website.