version 1.2 may 2004 ? jmicron 2003. all rights reserved. page 1 copying prohibited. jmicron/JM20338 JM20338 hi-speed usb & sata combo to pata bridge description the JM20338 is single chip solution to bridge be tween usb 2.0, sata and ata/atapi-based mass storage device. it provides the capability to translate usb 2.0 mass storage and sata protocols to ata/atapi commands. the usb adheres to the mass storage class bulk-only transport specification, and supports dual lun operation. the embedded command parser supports both ata and atapi command set with lb a48 bit addressing capability. features quick reference signal bit rate 1.5 gbps/sata and 480 mbps/usb spread spectrum -0.3% to 0.0 power supply 3.3v esd protection 2000 v adj. amplitude 2 levels adj. pre-emphasis 4 levels package 64-pin lqfp ? 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 usb) 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-7 ? support ata/atapi ultra dma mode ? support ata/atapi packet command feature set ? support ata/atapi lba48 addressing mode ? support dual lun (logic unit number) for usb to ata/atapi ? support 12mhz external crystal. ? single-power 3.3v power supply ? 0.18um cmos technology and 64-pin lqfp assp package applications usb & sata products ? enclosure system ? storage subsystem ? backward compatible storage system www.datasheet.co.kr datasheet pdf - http://www..net/
version 1.2 may 2004 ? jmicron 2003. all rights reserved. page 2 copying prohibited. jmicron/JM20338 functional block diagram ide bus controller ata/atapi controller sata link layer sata physical layer register files sata transport layer fifo fifo usb 2.0 phy usb serial interface engine (sie) register files ata/atapi controller fifo fifo usb host ide device sata host fig. 1 functional block diagram of JM20338 applications sata ide usb JM20338 usb to ide + sata to ide combo JM20338 ide fig. 2 hi-speed usb & sata combo to pata device product information name description JM20338 hi-speed usb & sata combo to pata bridge design kit contact information 1 JM20338 data sheet department email 2 JM20338 design guide sales sales@jmicron.com 3 application evb tech. support fae@jmicron.com www.datasheet.co.kr datasheet pdf - http://www..net/
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