Intel SSR316MJ2 Product Specification - Page 19

Intel® Storage System SSR316MJ2 TPS Feature Summary Feature Enclosure Management Controller (EMCo) SAF-TE Support Temperature sensor FRU/Configuration SEEPROM Drive Status LEDs I2C Interface Audible Alarm 2 12-pin Power Connectors The EMCo features the following: Description • On-board AT89C51 micro-controller with 256Kbit external SRAM memory • 3 SATA Host Controller I2C Interfaces • SATA and SATA-II extension compatibility • Compliance with the SATA Accessed Fault Tolerant Enclosures (SAF-TE) Specification, Version 1.00, Revision 041497. • Supports SAF-TE commands • Hot swap support for up to 16 SATA Drives The backplane firmware complies with version 1.00, rev 041497, of the SAF-TE specification. An LM75 or equivalent temperature sensor is located on the backplane that allows drive cage temperature monitoring by enclosure management. An Atmel* AT24C02* provides 2048 bits of serial EEPROM memory for storage of configuration and product FRU information. The EMCo provides support for drive status LEDs that are visible at the front of each drive carrier. These LEDs indicate the following: • Activity LED - Green LED that indicates when a drive is being accessed. • Fault LED - Amber LED that has two active states: Steady-On to indicate a failed drive and Flashing-On/Off to indicate the drive(within an array) is being rebuilt. The SAF-TE protocol is supported via out-of-band communication by three physical I2C Interfaces. An I2C mux implemented in a Programmable Logic Device (PLD) coordinates communication between the backplane and multiple Serial ATA controllers. A piezo-electric buzzer on the backplane provides an audible alarm to indicate the following failures: • Delayed spin-up on 8 slots to reduce initial inrush current to comply with 240VA requirements. Revision 1.0 9 Intel Order number C75916-001