American Megatrends MegaRAC MG9073S User manual

© 2007-2008 American Megatrends Inc. - Specications subject to change without notice
Data Sheet
AMI’s experience in the storage and server market converged in
designingaseriesofbackplane controllersdesigned tominimize boardspace
utilization and maximize functionality and configurability. Equipped with
internal oscillator, temperature sensor and flash, AMI’s MG9073S backplane
controller for SAS/SATA backplanes provides a cost effective solution that
takes minimal board space, measuring only 9x9mm. Exceptionally flexible,
the chip can be utilized in a variety of designs and configurations for
applications from entry-level to mission-critical.
AMI’s MegaRAC MG9073S is
compatible with SAS/SATA Host
Bus Adapters from all major
storage vendors and supports
Serial GPIO, the latest and most
advanced industry standard
for connection to the Host Bus
Adapter (HBA).
Each MG9073S device has two
SGPIO ports for connection to the
SAS HBA. Those ports support
LED management and detect
drive presence for up to 8 drives.
MG9073S supports the SFF 8485
Specification for Serial GPIO Bus
Rev. 0.7.
MegaRAC MG9073S is
designed to save board space: it
comes in a small LQFP package
measuring just 9x9 mm. The
HIGHLIGHTS
SAS/SATA drive support
One AMI 9073S controller supports
up to 8 drives
Multiple cascaded AMI 9073S
controllers support up to 32 drives
IPMI 2.0 compliant sensor support
Internal temperature sensor
Supports SGPIO specication
SFF-8485
Provides drive Activity, Fail/Rebuild
and Locate LED for each drive
Small LQFP-32 package (9mm X
9mm)
Wide Voltage Supply Input range
(2.5V -5.25V)
Internal oscillator (no external
crystal needed)
Lead free green packaging
Supported initiators
- LSI HBA and LSI SAS-Expanders
- Intel ESB-2
- ICH9
- Adaptec (SGPIO only)
- AMCC (SGPIO only)
- Broadcom
- NVIDIA
- HighPoint
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09 22 2008
controller includes one internal
temperature sensor, as well as
oscillator and flash. The chip does
not require external clock, crystal,
flash or EEprom. Depending
from design and configuration, a
solution featuring MG9073S can
yield a significant reduction in
cost.
Multiple MG9073S can be
cascaded on the same SGPIO bus
to support up to 32 drives. AMI
MegaRAC is PIN-congurable for
16 dierent congurations. Several
reference conguration designs are
available from AMI - others can be
designed. Hardware and software
development tools are available to
support easyintegrationofMG9073S
in server and storage projects.
9 mm
9 mm
MG9073S

2/2
Features
American Megatrends Inc.
5555 Oakbrook Parkway - Suite 200
Norcross, GA 30093 | t: 770.246.8600
Sales & Product Information
[email protected] | t: 800.828.9264
Technical Support
[email protected] | t: 770.246.8645
www.ami.com
© 2008 American Megatrends Inc. - Product Specications Subject to Change Without Notice - All Rights Reserved
All Trademarks are property of their respective owners
MegaRAC® MG9073S
Space-Saving SAS/SATA Enclosure Management Controller
Key Features
SAS/SATA Drive Support
One dedicated SMBus (I2C) connection
Small LQFP-32 Package (9mm X 9mm)
Internal Temperature Sensor
Congurable from 1 to 8 drives - 2 chips can be
cascaded on same SGPIO to support 16 drives
Supports SGPIO Specication SFF-8485
Wide Voltage Supply Input range (2.5V -5.25V)
Internal Oscillator (no external crystal needed)
Internal RTC
Drive Activity, Locate and Fail LED for each drive
Enclosure Management Protocols
SFF-8485 Specication for Serial GPIO (SGPIO)
Bus Revision 0.7
SGPIO
Two SGPIO ports
SMBus
Read-only slave device
Can be read/written as typical sensor device
Sensor data access through registers
SMBus Bitmask registers
SMBus alerts
SMBus alert event log
SMBus Data Line
SMBus Clock Line
2 MG 9073S can be supported on the same
SMBus distinguished by the address
LED Latch Enables
Latch enable for Activity LED
Lach enable for Fail LED
Latch enable for Locate LED
Supported Drives
Each chip supports up to 8 drives
Four chips can be cascaded on same SGPIO to
support up to 32 drives
Internal Temperature Sensor
Set/Read treshold
Development Tools
Hardware Tools
Series 950 USB upgrade tool with 4-pin header
to upgrade any part in-circuit
Comes with Windows based upgrade
Software Tools
DOS-based upgrade application (FlashMG) that
boots from a ash drive and upgrades rmware
through the system BMC
Windows-based upgrade application (Win-
FlashMG) that upgrades rmware through the
BMC
Linux source with binary to upgrade the rm-
ware through the BMC
Contact AMI to receive a reference design in Adobe Ac-
robat or OrCad schematic format. Please provide your
schematic for verication before nalizing your layout.
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Currently implemented referenCe Configurations
Conf Number of Drives LEDs I2C addr.
SGPIO-0 SGPIO-1 Oset
0x00 4 - - Active Low 0xc0
0x01* 4 - - Active Low 0xc0
0x04 4 4 - Active Low 0xc0
0x07 8 - - Active Low 0xc0
0x08 Lower 8 - 0 Active low 0xc0
0x09 Upper 8 - 8 Active Low 0xc2
0x0f - - - Active High Master
(*) Conguration 0.01 does not require latches
small footprint for exCeptional versatility
MegaRAC MG9073S has a small 9x9 mm package, a signicant advantage for SAS/
SATA backplanes supporting compact, clean designs. SGPIO and SMBus support
make MG9073S an ideal controller for advanced enclosure management.
American Megatrends oers a unique set of competencies in storage hardware design
and management rmware, and can provide a variety of reference designs.
A number of tier-1 OEMs have chosen AMI backplane controllers in order to
streamline their designs and reduce their production costs by reducing the
number of components on the backplane.
With megaraC 9073s there’snoneed on the BaCkplane for....
Crystal flash temp sensor eeprom
ESB2
Southbridge
MG9073 MG9073MG9073
SAS-HBA
MG9073 MG9073