MG Series Backplane Controllers

AMI Backplane Controller Product Matrix

AMI Backplane Controllers from AMI provide LED and sensor control for SAS/SATA/NVMe drives. They provide exceptional flexibility and require minimal board real estate, making them a perfect fit for numerous applications.

A wide selection of reference designs and development tools are available to help speed the design process. AMI's Backplane Enclosure chips work with any HBA supporting SGPIO (SFF-8485) and/or SES-2 protocol over I2C. These Backplane Controllers can be flashed or upgraded via SMBus from the motherboard BMC, or USB, depending on the model.


  • Low-cost, true single chip solution
  • Parts Ready to use No firmware or programming required
  • Supports LED/Drive Management through SGPIO (SFF-8485) and SES-2
  • Supports IBPI Specification (SFF-8489)
  • Can drive up to 3 LEDs per slot
  • Provides drive Activity, Fail/Rebuild and Locate LEDs for each drive
  • Up to 4 controllers can be cascaded to support up to 32 drives
  • Firmware Upgradable through SMBus from host BMC
  • Diagnostics and FW tools available for Win32, Win64, Linux, EFI and DOS
  • Available in QFN-64, TQFP-48 and LQFP-32 packages

Backplane Controller Product Matrix

The table below compares the key features of the MG9xxx Backplane Controller series from AMI. For more detail on individual Backplane Controllers, see the individual MG9xxx Backplane Controllers product page (by clicking the Backplane Controllers name) and download the Data Sheet for the full product specification.

Features MG9100 MG9098 MG9094 MG9081 MG9085A
UBM Channels Yes, 2/4 No No No No
PCIe Hot-plug SMBus support Yes Yes No No No
VPP/SHP Platform Support Yes Yes No No No
SAS Power Disable Yes Yes No No No
NVMe/SAS Drive Detect Yes Yes No No No
SGPIO Channels 2 2 2 2 1
SGPIO Configurations 32 32 44 30 4
SES-2 (Legacy I2C based) No No No Yes Yes
BMC Access through SMBus Yes Yes Yes No No
IPMI No No No Yes No
IBPI Yes Yes Yes Yes Yes
Ready LED Support Yes Yes Yes Yes Yes
Global Act & Fail LED Yes Yes Yes Yes Yes
USB No No No Yes Yes
Internal Voltage Regulator No No Yes Yes Yes
Internal Crystal Yes Yes Yes Yes Yes
Package QFN-64 QFN-64 TQFP-48 TQFP-48 LQFP-32