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, Features & Application
1.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
2. 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
3. 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
4. GPIO
Supports 15 GPIOs
Supports I2C interface
Supports ISA interface
Supports SPI interface
Supports RS232 interface
Supports firmware extension
主要特点：
1，芯片QFN封装64PIN，管脚少，芯片集成度高，单芯片方案周边电路简单PCB设计简单。
2，High Speed传输，支持单盘2TB以上。
3，使用范围：NAS，DAS，RAID硬盘柜，磁盘阵列，SATA硬盘接口扩展，DVR，高清播放器；
如有兴趣，请随时与我联络。
15302657189深圳新源电子科技
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