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Features
Key Features
SAS/SATA Drive Support
One dedicated SMBus (I2C) connection
Small LQFP-32 Package (9mm X 9mm)
Internal Temperature Sensor
Configurable from 1 to 8 drives - 2 chips can be
cascaded on same SGPIO to support 16 drives
Supports SGPIO Specification 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 Specification 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 flash drive and upgrades firmware
through the system BMC
-
Windows-based upgrade application (Win-
FlashMG) that upgrades firmware through the
BMC
-
Linux source with binary to upgrade the firm-
ware through the BMC
Contact AMI to receive a reference design in Adobe Ac-
robat or OrCad schematic format. Please provide your
schematic for verification before finalizing your layout.
2/2
space-saving sAs/sAtA Enclosure Management Controller
SAS-HBA
MG9073
s
mall footprint for exCeptional versatility
MegaRAC MG9073S has a small 9x9 mm package, a significant advantage for SAS/
SATA backplanes supporting compact, clean designs. SGPIO and SMBus support
make MG9073S an ideal controller for advanced enclosure management.
American Megatrends offers a unique set of competencies in storage hardware design
and management firmware, 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.
W
ith
C
rystal
C
urrently implemented referenCe Configurations
Conf
Number of Drives
SGPIO-0
SGPIO-1
0x00
4
-
0x01*
4
-
0x04
4
4
0x07
8
-
0x08
Lower 8
-
0x09
Upper 8
-
0x0f
-
-
(*) Configuration 0.01 does not require latches
© 2008 American Megatrends Inc. - Product Specifications Subject to Change Without Notice - All Rights Reserved
MegaRAC
MG9073
m
raC 9073s
'
n
n
ega
there
s
o
eed on the
f
lash
LEDs
I2C addr.
Offset
-
Active Low
0xc0
-
Active Low
0xc0
-
Active Low
0xc0
-
Active Low
0xc0
0
Active low
0xc0
8
Active Low
0xc2
-
Active High
Master
MG9073S
®
ESB2
Southbridge
MG9073
MG9073
MG9073
B
f
....
aCkplane
or
t
s
eeprom
emp
ensor
American Megatrends Inc.
5555 Oakbrook Parkway - Suite 200
Norcross, GA 30093 | t: 770.246.8600
Sales & Product Information
sales@ami.com | t: 800.828.9264
Technical Support
support@ami.com | t: 770.246.8645
www.ami.com
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