JMB320 Datasheet PDF - JMicron


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JMB320
JMicron

Part Number JMB320
Description Port Multiplier Chip
Page 2 Pages

JMB320 datasheet pdf
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JMicron/JMB320
JMB320 Port Multiplier Chip
Overview
JMicron JMB320 is a single chip. It integrated three independent SATA channels and a micro-processor.
With proper setting, the chip can be configured as an 1 to 2-ports Serial ATA II Port Multiplier or a 2 to
1-port Serial ATA II Port Selector.
JMB320 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
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 3-port SATA II PHY
Integrated PLL for SATA II interface
Total three 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 48-pin QFN package
SATA
Supports 3-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
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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 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
Copyright © 2009 JMicron Inc. All rights reserved.
Product Brief
Page 1
2009/01/11
Datasheet pdf - http://www.DataSheet4U.net/



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JMicron/JMB320
Functional Description
JMB320 is a highly integrated single chip. It integrates three high-speed Serial I/O’s, three SATA upper
layers, a microprocessor, SRAM, PROM, a highly efficient data bus and other control logic into the chip.
JMB320 can work as an 1 to 2-ports Port Multiplier or 2 to 1-port Port Selector using internal embedded
firmware without extra external flash needed. But it also can use external flash interface and with proper
firmware programming to extend its capability.
Block Diagram
Figure Function View of JMB320
SATA
HDD
SATA
3Gb/Sec
PHY
SATA
Upper
Layer
Data Bus
Clock
Gen
Reset
Circuit
GPIO
Circuit
SATA
HDD
SATA
3Gb/Sec
PHY
SATA
Upper
Layer
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FIS
Processor
SATA
Upper
Layer
SATA
3Gb/Sec
PHY
HOST BUS
ADAPTER
uP PROM
SRAM
SPI
Register Bus
Port
Multiplier
Supporting Document
1 Product Brief
2 Data Sheet
3 Hardware Design Guide
4 Application Schematic
Contact Information
Department
Sales
Tech. Support
Email
sales@jmicron.com
fae@jmicron.com
Copyright © 2009 JMicron Inc. All rights reserved.
Product Brief
Page 2
2009/01/11
Datasheet pdf - http://www.DataSheet4U.net/




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