4/ System Resources; I2C Bus; System Management (Sm) Bus; Table 19: I2C Bus Port Address - Kontron COMe-cEL6 User Manual

4/ System Resources

4.1. I2C Bus

The following table specifies the devices connected to the accessible I2C bus including the I2C address. The I2C bus is
available at COMe pin A83, I2C_CK and pin A84, I2C_DAT.

Table 19: I2C Bus Port Address

8-bit 7-bit Used for
Address
Address
58h 2Ch Internally reserved
A0h 50h Module EEPROM
AEh 57h Carrier board EEPROM
64h 32h External RTC

4.2. System Management (SM) Bus

The 8-bit SMBus address uses the LSB (bit 0) for the direction of the device.
 Bit0 = 0 defines the write address
 Bit0 = 1 defines the read address
The following table specifies the 8-bit and 7-bit SMBus write address for all devices.

Table 20: SMBus Address

8-bit 7-bit Device
Address Address
5Ch 2Eh HWM NCT7802Y
www.kontron.com
Available
No
YES
Optional
Optional
Description
Hardware Monitor.
Do not use this address for external devices under any circumstances!
COMe-cEL6 - User Guide, Rev.1.2
Description
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