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Features
Supported Enclosure Management Protocol
SGPIO
One SGPIO port communicates enclosure man-
agement information, LED management and
drive presence for up to 4 drives
Promise Protocol
Supports Promise Protocol for SATA HBA
over I2C
Drive Support
Each chip supports 4 drives
Support for up to 8 drives by cascading two
MG9070
Managed Elements
Drive Presence
Drive Activity
Drive Fail
Drive Locate
Global Activity
Global Fail
Ready LED Support
Absolute Maximum Ratings
Operating Temperatures -55oC to +125oC
Storage Temperature -65oC to +150oC
Voltage on any pin except RESET# with respect
to ground -1.0V to VCC+0.5V
Voltage on RESET# with respect to ground -1.0
to +13.0V
Maximum operating Voltage 6.00V
DC Current per I/O Pin 40.0mA
DC Current VCC and Ground Pin 200.0mA
2/2
sAs/sAtA Enclosure Management Controller
Versatile: MG 9070 can be used in a variety of designs
HBA /SGPIO I
nterfAce
Each device has one SGPIO
port that can communicate
enclosure management in-
formation to HBAs with
SGPIO interface, support-
ing LED management and
drive presence for up to
4 drives. By adding more
MG9070 devices, the back-
plane can be realized for 8,
12, 16 drives or more.
P
SAtA HBA
rOmISe
MG9070 is designed to work
with any Promise SATA
HBA over I2C. By adding
more MG9070 devices, the
backplane can be realized for
8, 12, 16 drives or more.
eSB2
The block diagram shows the use of MG9070
with an ESB2 southbridge. By adding more
MG9070 devices, the backplane can be real-
ized for 8, 12, 16 drives or more.
© 2008 American Megatrends Inc. - All Rights Reserved. Product Specifications Subject to Change without Notice
MegaRAC
®
Sideband Signals
Sideband Signals
connector 1
connector 2
S
S
S
S
S
S
D
D
C
L
D
D
O
I
L
O
O
I
K
A
D
SDO
SDI
CLK
LOAD
SDO
SDI
MG9070
MG9070
0
1
2
3
0
1
0
1
2
3
4
5
I2C Signals
S
S
C
D
Promise
L
I
SATA-HBA
SCL_HBA
SDA_HBA
29
Backplane_ID
MG9070
0
1
2
3
0
1
2
3
ESB-2
S
S
S
S
D
D
C
L
O
O
L
O
0
1
K
A
D
SDO
SDI
CLK
LOAD
MG9070
0
1
2
3
0
1
2
3
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
All Trademarks are Property of their Respective Owners
MG9070
S
S
C
L
SAS-HBA
L
O
K
A
D
CLK
LOAD
2
3
6
7
SCL_HBA
SDA_HBA
MG9070
29
Backplane_ID
0
1
2
3
4
5
6
7
MOTHERBOARD
SDO
SDI
CLK
LOAD
MG9070
0
1
2
3
4
5
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