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 JMicron/JM20337
JM20337 Hi-Speed USB to SATA & PATA Combo Bridge
Description
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.
Features
* Compliance with Gen1i, and Gen1m of Serial ATA II Electrical Specification 1.0 * Support SATA spread-spectrum transmitter * Support SATA II Asynchronous Signal Recovery (Hot Plug) feature * Compliance with USB 2.0 (Hi-Speed) electrical specification * Compliance with USB Mass Storage Class Bulk-Only Transport Specification * 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
Quick Reference
Signal Bit Rate Spread Spectrum Power Supply ESD Protection Adj. Amplitude Adj. Pre-emphasis Package Applications 1.5 Gbps/SATA Mbps/USB -0.3% to 0.0 3.3V 2000 V 2 levels and 480
64-pin LQFP USB & SATA products * Enclosure System * Storage subsystem * 2 bays storage system * Backward Storage system compatible
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Version 1.2 (c) JMicron 2003. All rights reserved.
Page 1
May 2004 Copying prohibited.
www..com
4 levels
JMicron/JM20337
Functional Block Diagram
IDE Device
SATA Transport Layer
ATA/ATAPI Controller
ATA/ATAPI Controller
SATA Physical Layer
IDE Bus Controller
USB Serial Interface Engine (SIE)
FIFO
SATA Link Layer
FIFO
FIFO
Register Files
FIFO
SATA Device
USB 2.0 PHY
USB Host
Register Files
Fig. 1 Functional Block Diagram of JM20337
Applications
USB to IDE + USB to SATA Combo
IDE USB
IDE SATA
SATA
JM20337
JM20337
Fig. 2 Hi-Speed USB to SATA & PATA Combo functionality
Product Information Name JM20337 Design Kit 1 JM20337 Data Sheet 2 JM20337 Design Guide 3 Application EVB
Description Hi-Speed USB to SATA & PATA Combo Bridge Contact Information Department Email Sales sales@jmicron.com Tech. Support fae@jmicron.com
Version 1.2 (c) JMicron 2003. All rights reserved.
Page 2
May 2004 Copying prohibited.


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