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JMB322

JMicron
Part Number JMB322
Manufacturer JMicron
Description RAID Port Multiplier
Published Apr 20, 2012
Detailed Description JMicron/JMB322 JMB322 RAID Port Multiplier Overview The JMicron JMB322 is a single chip, 1 to 2-port Serial ATA II Port...
Datasheet PDF File JMB322 PDF File

JMB322
JMB322

Overview
JMicron/JMB322 JMB322 RAID Port Multiplier Overview The JMicron JMB322 is a single chip, 1 to 2-port 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.
The device uses JMicron’s production-proven Multi-port Serial ATA PHY technology and JMicron-proprietary storage processor to provide very high efficient RAID operation.
With an easy configuration scheme, the device can be a pure port multiplier which provides SATA port expansion just like USB 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.
The JMB322 is a self-contained storage processor chip which completely frees up the main CPU loading and the SATA ports comply with eSATA specification, making it suitable for use in both internal and external applications.
Feature Compliance • Compliant with Serial ATA II Port Multiplier Spec.
Revision 1.
2 • Compliant with Serial ATA II Port Selector Spec.
Revision 1.
0 • Compliant with Serial ATA II PHY Electrical Spec.
Revision 1.
0 • Compliant with Serial ATA II High Speed Serialized AT Attachment Spec.
Revision 2.
5 General • Integrated 3-port SATA II PHY • Integrated PLL for SATA II interface • Total three independent SATA channel • Integrated uP, PROM and SRAM for firmware programming • Integrated high performance RAID processor • Fabricated 0.
13um CMOS Standard Logic Process • 1.
3V core and 3.
3V I/O power supply www.
DataSheet.
co.
kr • Available in 48-pin QFN SATA • Supports 3-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 • Automatically speed negotiation for 3 Gbps or 1.
5 Gbps • Supports staggered spin-up • Supports 48-bit LBA a...


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