Interface Masters Technologies Inc. Confidential & Proprietary
TAHOE 8824 User Guide
Rev: 01
09/18/2017 Page 26 OF 34
5.2 I2C Bus 1 Peripherals
The CN78XX TWSI1 interface is the I2C master for bus 1.
5.2.1 ADM1032ARZ - Temperature Sensor
ON Semiconductor temperature sensor utilized to monitor the junction temperature
of the CPU and board temperature. The I2C ID is 1001 100x
5.2.2 Real Time Clock
The MCP7940N is a battery backed I2C real time clock. With having an external
32.768kHz crystal and a battery, this device can keep track of time while the system is off.
The I2C ID is 1101 111x. Microchip RTC device is installed on the system to provide RTC
function.
5.2.3 EEPROM
An EEPROM is utilized to store MAC address for the CN78xx, and other
configuration data. The I2C ID is 1010 100x ST Micro Electronics 512Kb EEPROM is
installed on the system to store customized information.
