Artesyn SCP-P4040-4G-ENP2 Installation and Use (August 2014) - Manual (Page 50)

Functional Description
SCP-P4040-4G-ENP2 Installation and Use (6806800P60B) 50
4.17.1 I2C Device EEPROM
The ADT7411 thermal sensor is a dual-channel digital thermometer and under/over
temperature alarm. It is used in computers and thermal management systems. The ADT7411
thermal sensor is located on I2C1, U2900. The device address is 0x90. It is designed for
monitoring P4040 processor temperature.
The ADT7411 can accurately measure the temperature of a remote thermal diode to ±1°C and
the ambient temperature to ±3°C. The temperature measurement range defaults to 0°C to
+127°C, but can be switched to a wider measurement range of-55°C to +150°C. The ADT7411
communicates over a 2-wire serial interface compatible with system management bus
(SMBus) standards. An ALERT output signals when on-chip or remote temperature is out of
range. The THERM output is a comparator output that allows on/off control of a cooling fan.
The ALERT output can be reconfigured as a second THERM output, if required.
By default, u-boot should mask THERM and ALERT output, set the temperature measurement
range from 0°C to +127°C. For setting operation mode and fetching the monitoring
temperature, u-boot should provide u-boot commands.
Table 4-12 I2C Interface
Address Bus Component Function Oracle Number
0xDC I2C1 9FG104DGILFT Clock Generator 51NL9655W46
0xD0 I2C1 M41T65Q6F Watchdog 5106837C56
0x30 I2C1 PCA9557PW-T IO-Expander 51NL9637V06
0xAC I2C1 MCP98243T-BE/ST SPD Channel A 5106819C29
0xA4 I2C1 MCP98243T-BE/ST SPD Channel B 5106819C29
0x90 I2C1 ADT7411ARQZ-
REEL7 Voltage Monitor/ Temp
Sense 227975
0xAE I2C1 AT24C02-SSHM-T
AT24C512C-SSHM-T 2kb Boot Config
EEPROM 512kb Boot
Config EEPROM 5106813C77
5106813D51
0xA8 I2C1 AT24C512C-XHM-T Processor ID EEPROM 5106813D81
0xD0 I2C2 M41T62LC6F RTC 5106837C55