jmicron/JMB321 copyright ? 2009 jmicron inc. all rights reserved. product brief page 1 2009/01/11 JMB321 port multiplier chip overview jmicron JMB321 is a single chip. it integrated six independent sata channels and a micro-processor. with proper setting, the chip can be configured as an 1 to 5-ports serial ata ii port multiplier or a 5 to 1-port serial ata ii port selector. JMB321 contains 15 gpios which can be configured as various standard interfaces. it also has the capability to load external firmware code to extend its functionality. 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 high speed serialized at attachment spec. revision 2.5 general integrated 6-port sata ii phy integrated pll for sata ii interface total six independent sata channel integrated up, prom and sram for firmware programming fabricated in 0.13um cmos standard logic process 1.3v core and 3.3v i/o power supply available in 64-pin qfn sata supports 6-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 supports spread spectrum clocking supports partial / slumber power saving mode automatically speed negotiation for 3 gbps or 1.5 gbps supports bist and loopback mode supports staggered spin-up supports 48-bit lba addressing supports atapi drives supports native command queue (ncq) supports hot-plug supports asynchronous notification supports pm aware and non-pm aware host gpio supports 15 gpios supports i2c interface supports isa interface supports spi interface supports firmware extension functional description JMB321 is a highly integrated single chip. it integ rates six high-speed serial i/os, three sata upper layers, a microprocessor, sram, prom, a highly effi cient data bus and other control logic into the chi p. JMB321 can work as an 1 to 5-ports port multiplier or 5 to 1-port port selector using internal embedde d www.datasheet.co.kr datasheet pdf - http://www..net/
jmicron/JMB321 copyright ? 2009 jmicron inc. all rights reserved. product brief page 2 2009/01/11 firmware without extra external flash needed. but i t also can use external flash interface and with pr oper firmware programming to extend its capability. block diagram figure function view of JMB321 sata hdd sata hdd sata hdd sata hdd sata hdd host bus adapter sata 3gb/sec phy sata upper layer sata 3gb/sec phy sata upper layer sata 3gb/sec phy sata upper layer sata 3gb/sec phy sata upper layer sata 3gb/sec phy sata upper layer sata 3gb/sec phy sata upper layer clock gen reset circuit gpio circuit fis processor up sram data bus register bus port multiplier spi prom supporting document 1 product brief 2 data sheet 3 hardware design guide 4 application schematic contact information department email sales sales@jmicron.com tech. support fae@jmicron.com www.datasheet.co.kr datasheet pdf - http://www..net/
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