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JMB391 - RAID Port Multiplier Chip

Description

JMB391 is a highly integrated single chip.

It integrates five high-speed Serial I/O’s, five SATA upper layers, a high-performance RAID engine, a microprocessor, SRAM, PROM, a high efficient data bus and other control logic into the chip.

Features

  • 2.3 SATA Supports 6-port 3.0Gbps SATA II interface Supports SATA II Gen2i and Gen2m (External SATA Connection, eSATA) Output swing control and automatic impedance calibration for SATA II PHY Supports asynchronous signal recovery Supports spread spectrum clocking Supports partial / slumber power saving mode Automatically speed negotiation for 3 Gbps or 1.5 Gbps Supports BIST and loopback mode Supports staggered spin-up Supports 48-bit LBA addressing Supports ATAPI drives Supports Native Command Q.

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Datasheet preview – JMB391

Datasheet Details

Part number JMB391
Manufacturer JMicron
File Size 259.13 KB
Description RAID Port Multiplier Chip
Datasheet download datasheet JMB391 Datasheet
Additional preview pages of the JMB391 datasheet.

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Full PDF Text Transcription

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JMicron/JMB391 JMB391 RAID Port Multiplier Chip 1. Overview JMicron JMB391 is a single chip, 1 to 5-ports Serial ATA II Port Multiplier with RAID function support. It is designed to provide SATA port expansion, data protection and performance aggregation at various applications. JMB391 uses JMicron’s production-proven Multi-port Serial ATA PHY technology and JMicron-proprietary storage processor to provide very high efficient SATA RAID operation. With an easy configuration scheme, the device can be a pure port multiplier which provides SATA port expansion just like a SATA Hub, or hard-drive performance booster which provides a high performance device seen by host controller or hard-drive data protector which automatically backup data to prevent data loss from hard-drive damage.
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