Sundance SMT381 2007 - Manual (Page 28)

10 EMC
This module is designed to operate from within an enclosed host system, which is build
to provide EMC shielding. Operation within the EU EMC guidelines is not guaranteed
unless it is installed within an adequate host system.
This module is protected from damage by fast voltage transients originating from outside
the host system which may be introduced through the output cables.
Short circuiting any output to ground does not cause the host PC system to lock up or
reboot.
11 Appendix
11.1 Description of the registers
11.1.1 The Reset Register (Write Add 0x000)
The reset register is used to reset the firmware and some of the components of the
SMT381.
Writing a ‘1’ will put the selected block in the reset state. Writing a ‘0’ will release the
reset.
31 .. 28 27 .. 24 23 .. 20 19 .. 16 15 .. 9 8 .. 0
Command Address Data MSB Data LSB
1 0x000 Reserved Reset command
Figure 17: Reset Register (Write Only)
Reset command:
Bit 0: firmware reset.
Bit 1: DAC Reset.
11.1.2 Temperature Registers (Read Add 0x020, 0x021,
0x028, 0x029)
There are four temperature registers. Each register is 16 bits long. When the bit value of
the register is converted to a decimal number, that number is the temperature in
degrees Celsius.
Read Request Format:
31 .. 28 27 .. 24 23 .. 20 19 .. 16 15 .. 12 11 .. 8 7 .. 4 3 .. 0
Command Address Data MSB Data LSB
0x2 0x020 (Smt338AirTempReg) (1) xx xx
User Manual SMT381 Last Edited: 12/06/2007 10:43:00