jmicron/JMB391 copyright ? 2008 jmicron inc. all rights reserved. product brief page 1 2008/11/03 JMB391 raid port multiplier chip 1. overview jmicron JMB391 is a single chip, 1 to 5-ports seria l 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 jmicrons production-proven multi-port serial ata phy technology and jmicron-proprietary storage processor to provide ve ry 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 autom atically backup data to prevent data loss from hard -drive damage. JMB391 also has advance mode to provide bot h benefit of performance boost and data protection. JMB391 is a self-contained storage processor chip w hich completely frees up the main cpu loading and the sata ports comply with esata specification, mak ing it suitable for use in both internal system and external storage applications 2. compliance & features 2.1 compliance compliant with serial ata ii port multiplier spec. revision 1.1 compliant with serial ata ii phy electrical spec. revision 1.0 compliant with serial ata high speed serialized at attachment spec. revision 2.5 2.2 general integrated 6-port sata ii phy integrated pll for sata ii interface total six independent sata channel integrated up, prom and sram for firmware programming integrated high performance raid storage processor fabricated in 0.13um cmos standard logic process 1.3v core and 3.3v i/o power supply available in 64-pin qfn 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 queue (ncq) supports hot-plug supports asynchronous notification supports pm aware and non-pm aware host www.datasheet.co.kr datasheet pdf - http://www..net/
jmicron/JMB391 copyright ? 2008 jmicron inc. all rights reserved. product brief page 2 2008/11/03 2.4 raid fully hardware-accelerated raid engine no driver, bios or software required for raid operation no external dram or processor required for raid operation independent of device sata port connection sequence supports raid levels: 0 / 1 / 10 / jbod sata in-band application interface supports more than 2tera bytes raid drive supports on-line command based bad sector recovery supports on-line auto-rebuild rebuild speed: 200gb/hour rebuild proceed continuously between power cycling supports various raid configuration and monitoring method 2.5 gpio supports 15 gpios supports i2c interface supports isa interface supports spi interface supports led indicators 3. functional description JMB391 is a highly integrated single chip. it integ rates five high-speed serial i/os, five sata upper layers, a high-performance raid engine, a microproc essor, sram, prom, a high efficient data bus and other control logic into the chip. with proper firm ware programming, JMB391 can be used as sata port multiplier, raid or disk clone system. the followin g paragraph describes each functional block in deta il. 3.1 block diagram figure 3.1 function view of JMB391 www.datasheet.co.kr datasheet pdf - http://www..net/
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