The MAX72408 is a dual serial general-purpose input/output (SGPIO) backplane controller. It is intended for system designers and software and firmware developers using this device to support enclosure management functions or other related I/O expansion tasks. The device can be used in any embedded control application including SAS or SATA where the monitoring of and control of a large number of digital I/O signals is required.
Dedicated Slave Mode I²C Interface
Autoload I²C Master Interface—Can Share with Up to Eight MAX72408 Devices
I²C Slave Interface—Can Share with Up to Eight MAX72408 Devices
Interrupt Output—Can Configure for Open Drain or Active Drive
High-Impedance Inputs (Nonclamping)
5V Tolerant I/O Using 3.3V Technology
On-Board 3.3V to 1.8V LDO Regulator for Core Logic
Internal Power-On Reset
Support for Up to Eight Drives Per Device—Cascaded Devices Can Support Up to 64 Drives
Mated/Present and SATA Pin 11 Activity Input for Each Drive
Activity and Status Light-Emitting Diode (LED) Output for Each Drive
Implements SGPIO IBPI (SFF-8489 Rev 0.1)
Two 24-Bit SGPIO Master/Slave Interfaces
Operates in One of Three Modes for Dual or Single Slave Operation
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