Intel MPCMM0002 manual Non-Intelligent FRUs without I2C Support, Two-Wire Serial Interface Based

Guidelines for Third Party Chassis Vendors—MPCMM0002 CMM

Figure 36. FRU That Uses the ADM1026

FPGA1

CMM

FPGA2

Monitor fan voltage for all 3

						fans
IPMB-A[1] SDA					AIN(3)	AIN(4) AIN(5) PWM
	I2c Data				SDA		FANTK0/GPIO0
IPMB-A[1] SDA	I2c Clock
					SCL
							FANTK1/GPIO1
	HS Button
					GPIO9
		HS LED					FANTK2/GPIO2
					GPIO10
						ADM 1026
	Health LED
					GPIO11
	User LED1
					GPIO12
	User LED2
					GPIO13
GPIO 1
			Fan Tray Presence
				signal

Fan1 Tach

Fan2 Tach

Fan3 Tach

13.6.2Two-Wire Serial Interface Based

FRUs such as sensors, EEPROMs, or similar devices that have support for the two-wire serial bus (I2C) can be hooked on shared or dedicated I2C buses. Examples are the Atmel* AT24C64/16 EEPROMs and the DS75 temperature sensor.

13.7Non-Intelligent FRUs without I2C Support

The GPIO pins and (if needed) the dedicated I/O pins of the CMM can be used to allow FRUs that do not support the I2C bus to communicate with the CMM. For example, the air filter tray used on the Intel NetStructure MPCHC0001 chassis communicates with the CMM in this manner. In that chassis some of the seven GPIOs shown in Figure 33 are used to control the LED and to detect the presence of the filter tray. Also, readings from two temperature sensors (thermistors) on the filter tray are wired to the ADM1026 on the CMM board.

13.8FRU Data Storage for Non-Intelligent Devices

Version 6.1 of the CMM firmware for the MPCMM0002 currently supports the Atmel Corporation* AT24C64 or AT24C16 EEPROMs and the Microchip Technology* 24LC256 EEPROM for the storage of FRU data on any non-intelligent device in the chassis. In particular, the chassis FRU data must be stored on one of these EEPROMs, each of which can store up to 8 kilobytes of data.

	Intel NetStructure® MPCMM0002 Chassis Management Module
July 2007	Hardware TPS
Order Number: 309247-004US	69