JMicron/JMB352
JMB352
High-Speed USB & SATA II Combo to Dual SATA II RAID Bridge
Description
The JMB352 is a bridge controller, which translates the communication protocol between SATA II 3.0G and
Hi-Speed USB commands. The integrated 60MIPS 8051, 3-port SATA II 3.0G and Hi-Speed USB technology
enable users to perform Hi-Speed USB to dual SATA II 3.0G, and eSATA II 3.0G to dual SATA II 3.0G applications
in a signal chip.
In this chip, the Hi-Speed USB controller supports the USB Mass Storage Class Bulk-Only Transport
Specification, and support 3 LUN applications. The SATA controller could be configured as host or device. The
3-port SATA II 3.0G controllers further supports the eSATA to dual SATA communication. Integrated these two
technologies, the user could perform JMB352 to the following applications.
¾
eSATA & Hi-Speed USB combo to dual SATA bridge application with RAID0 or RAID1 or JBOD function.
(USB Default Driver of OS)
¾
Hi-Speed USB to SATA with 3 LUN bridge application (USB Default Driver of OS)
¾ Dual eSATA & Hi-Speed USB to SATA application (USB Default Driver of OS)
¾ One-button system backup application for above 3 applications. (With SATA, USB Vender Software
Application)
Features
• Compliance with Serial ATA International
Organization: Serial ATA Revision 2.6
• Compliance with Gen1i, Gen1m, Gen2i and Gen2m of
Serial ATA International Organization: Serial ATA
Revision 2.6
• Support SATA 1.5G/3.0G Speed Negotiation
• Support SATA II Asynchronous Signal Recovery (Hot
Plug) feature
• Support SATA Host/Device controller configuration
• Compliance with USB 2.0 electrical specification
• Support USB 2.0 High-Speed and Full-Speed
Operation
Version 1.2
© JMicron 2008. All rights reserved.
Quick Reference
Signal Bit Rate
3.0 Gbps
Power Supply
3.3V and 1.2V
GPIO Support
UP to 24
ESD Protection
2000 V
Package
100-pin LQFP
RAID Level
Support
RAID 0,1, JBOD, Port
Multiplier
SATA Port
3
USB Port
1
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JMicron/JMB352
• Support USB HID Interrupt Transfer
RAID solution
Applications
• Compliance with USB Mass Storage Class, Bulk-Only
• Mass storage devices
• Optical storage
• Storage system
• Port Multiplier
Transport Specification
• Support 3 LUN of USB Mass Storage Class
• Support ATA/ATAPI PACKET command feature set
• Support SATA 30MHz or 40MHz external crystal
• Integrated 60MIPS 8051 microprocessor with
64k-byte mask ROM
• Support one-button system backup operation
• Support one-button disk copy
• Support external NVRAM for customer VID/PID,
Manufacture and Product String.
• Embedded 3.3V to 1.2V Voltage Regulator
Functional Block Diagram
D a ta R A M
D M A
C o n tr o lle r
V o lta g e
R e g u la to r
P ro g ra m
R O M
U S B D e v ic e
C o n tr o lle r
H i- S p e e d
U S B P H Y
3 -p o rt S A T A II
C o n tr o lle r
3 -p o rt
S A T A II P H Y
M C U
G P IO
U S B
S A TA _C
G P IO I/F
S A TA _B
S A TA _A
Fig. 1 Functional Block Diagram of JMB352
Applications
SATA
PC Host
USB
JMB352
USB
SATA B
SATA Device
SATA A
SATA Device
SATA C
GPIO
LED
NVRAM
Keypad
Fig. 2 eSATA & Hi-Speed USB combo to dual SATA Bridge application
Version 1.2
© JMicron 2008. All rights reserved.
June 2008
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JMicron/JMB352
SATA
SATA Device
PC Host
SATA Device
JMB352
USB
SATA B
SATA Device
USB
SATA A
SATA C
GPIO
LED
NVRAM
Keypad
Fig. 3 Hi-Speed USB to 3-port SATA application
SATA
SATA
SATA B
USB
JMB352
USB
SATA A
SATA Device
PC Host
SATA C
GPIO
LED
NVRAM
Keypad
Fig. 4 Dual eSATA & Hi-Speed USB to SATA application
Product Information
Name
JMB352
Description
Serial ATA Bridge Chip
Design Kit
1 JMB352 Data Sheet
2 JMB352 Design Guide
3 Application EVB
Version 1.2
© JMicron 2008. All rights reserved.
Contact Information
Department
Email
Sales
sales@jmicron.com
Tech. Support
fae@jmicron.com
June 2008
Page 3
Copying prohibited.