JM20337 查看數據表（PDF） - JMicron Technology Corp.

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JM20337

Hi-Speed USB to SATA & PATA Combo Bridge

JMicron Technology Corp. 

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 1.5 Gbps/SATA and 480

Mbps/USB

Spread Spectrum -0.3% to 0.0

Power Supply

ESD Protection

3.3V

2000 V

Adj. Amplitude 2 levels

Adj. Pre-emphasis 4 levels

Package

64-pin LQFP

Applications

USB & SATA products

• Enclosure System

• Storage subsystem

• 2 bays storage system

• Backward

compatible

Storage system

Version 1.2

© JMicron 2003. All rights reserved.

Page 1

May 2004

Copying prohibited.

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