The following table lists BMC and satellite controller I2C accessible devices along with register name, base address, brief description, and the device part number. For I2C register details, see the manufacturer's respective device data sheet.
| Register Name | Address | Description | Device | |
|---|---|---|---|---|
|
8-bit (HEX) |
7-bit (HEX) |
|||
| System I2C_MAIN_SCL / SDA—Accessible from the SC only | ||||
| IO Expander | 0x40 | 0x20 | LED alarm and flash support | TI TCA6416AR |
| Current Sensor | 0x80 | 0x40 | Card current | TI INA3221 |
| Temperature Sensor (left) | 0x90 | 0x48 | Card outlet temperature | NXP LM75BTP |
| Temperature Sensor (right) | 0x92 | 0x49 | Card inlet temperature | NXP LM75BTP |
| FPGA Thermal Diode Sensor | 0x9C | 0x4E | FPGA Temperature | TI TMP411CDGKT |
| EEPROM | 0xA0 | 0x50 | Card serial number access. | EEPROM |
| Clock generator | 0xD2 | 0x69 | Low Jitter, 10-output MEMS Jitter Cleaner | SiTime SiT95145AI |
| Power PMBUS_SCL / SDA—Accessible from Server BMC or SC only | ||||
| VRM controller | 0xC0 | 0x60 | Multi-rail power controller. | Renesas ISL68220IRAZ |