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MCU I2C target documentation
Peter Wittich edited this page Oct 20, 2020
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This describes the I2C target that responds to the IPMC I2C controller for basic communication with the shelf manager.
The target responds to address 0x40 on the bus.
All access is registered access. All registers are read-only. non-registered access is undefined behavior. Reads outside the register list will return undefined values.
The values that are returned are 8 bit unsigned ints. Special values are
- 0xFF -- device not powered/present
- 0xFE -- data is stale
| Register | Value | comment |
|---|---|---|
| 0x00 | status | reserved |
| 0x10 | CM_MCU_TEMP | uint8, LSB is 1C |
| 0x12 | CM_FPGA_VU_TEMP | uint8, LSB is 1C |
| 0x14 | CM_FPGA_KU_TEMP | uint8, LSB is 1C |
| 0x16 | CM_FF_TEMP | uint8, LSB is 1C |
| 0x18 | CM_REG_TEMP | uint8, LSB is 1C |