Artesyn COMX-P40x0 ENP2 Installation and Use (August 2014) - Manual (Page 76)

Functional Description
COMX-P40x0 ENP2 Installation and Use (6806800R95B) 76
4.18.1 I2C Device Thermal Sensor
The ADT7411 thermal sensor is a dual-channel digital thermometer and under/over
temperature alarm. It is located on I2C1 at address 0x90 and measures the CPU temperature.
The ADT7411 can accurately measure the temperature of a remote thermal diode to ±1°C and
the ambient temperature to ±3°C. An ALERT output routed to an interrupt on the CPU signals
when on-chip or remote temperature is out of range.
4.18.2 I2C Device EEPROM
There are two I2C EEPROMs on the module implemented in AT24C02C and AT24C512C
devices. These EEPROMs are located on I2C1; one is for ID EEPROM (U30, AT24C02C, storing
board serial number, MAC address and so on.) and the other is for Processor EEPROM (U2001,
AT24C512C, storing processor ID and so on).The I2C addresses of these EEPROMs are 0xAE and
0xA8.
The AT24C02C provides 2Kbits of storage while the AT24C512C provides 512Kbits.
Both EEPROMs support sequential read and page write.
4.18.3 I2C Device WDT
The watchdog timer M41T65Q is located on I2C1, U2101 and the device address is 0xD0. It is
able to generate a power-on reset and interrupt to the CPU.
0x90 I2C1 ADT7411ARQZ-REEL7 Voltage Monitor/ Temp
Sense
0xAE I2C1 AT24C02-SSHM-T
AT24C512C-SSHM-T 2kb Boot Config EEPROM
512kb Boot Config
EEPROM
0xA8 I2C1 AT24C512C-XHM-T Processor ID EEPROM
0xD0 I2C2 M41T62LC6F RTC
0xDC I2C2 9FG104DGILFT Clock Generator
Table 4-8 I2C Interface
Address Bus Component Function