Hi-Speed USB to SATA & PATA Combo Bridge

product brief

The JM20337 is single chip solution to bridge between USB 2.0, SATA and ATA/ATAPI-based mass storage device. It provides the capability to translate USB 2.0 mass storage commands to serial ATA and ATA/ATAPI communication protocol. The USB adheres to the Mass Storage Class Bulk-Only Transport Specification, and supports dual LUN operation, which could connect to two ATA/ATAPI devices or one ATA/ATAPI device associated with one SATA device. The embedded command parser supports both ATA and ATAPI command set with LBA48 bit addressing capability.



Compliance with Gen1i, and Gen1m of Serial ATA II Electrical Specification 1.0
Compliance with USB 2.0 (Hi-Speed) electrical specification
Compliance with USB Mass Storage Class Bulk-Only Transport Specification


Support SATA spread-spectrum transmitter
Support SATA II Asynchronous Signal Recovery (Hot Plug) feature
Support 480Mbps High Speed (HS) and 12Mbps Full Speed USB operation
Support ATA/ATAPI Ultra DMA Mode
Support ATA/ATAPI PACKET command feature set
Support ATA/ATAPI LBA48 bit addressing mode
Support dual LUN (Logic Unit Number) with automatically master/slave enumeration
Support 12MHz external crystal
Single-power 3.3V power supply
0.18um CMOS technology and 64-pin LQFP ASSP package

Support operation system :
        Microsoft Windows 98
        Microsoft Windows ME, 2000, XP, 2003, Media Center, and later
        Mac OS 9.22 and above

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