Sundance SMT321 - Manual (Page 27)

4.4.6 Firm Ware Version
This is a read only register which the host can read the firmware version.
4.4.7 Com Out Scratch Registers
These registers can only be read by the host and in loopback mode the host can write to
the com in scratch registers and read them via the com out scratch registers.
4.4.8 Smt321 Serial Number Registers
The Module Serial Number registers can only be read by the Host. Four registers form a
unique 64 bit silicon serial number.
4.4.9 Smt321 Air Temp and Smt321 Diode Temp
The SMT321 has two temperature measurement registers which can only be read by the
Host. The data is a 255 bit representation of the module temperature measured at the
MSP430. This data must be calibrated to be meaningful.
4.4.10 Voltage registers of the module
These registers are used to store all the voltages present on the module and to be able
to take emergency actions if the voltages are suddenly out of range.
4.4.11 FPGA Dip Register
This register allows the host to read the FPGA dip configuration. There are 6 dips
available thus the status of the dips is the first 6 most significant bits of the received
packet.