Hello,
I currently have an LM71 temperature sensor interfaced with an fpga on my pcb. In looking at the datasheet for the LM71 I was not sure if I should have the fpga drive the SC, spi clk to the temp sensor, for 16 clocks or 32 clocks. At present here's a brief description of what I do after a board reset has been initiated and de-asserted:
1) Write the shutdown control to the temp sensor (32 clks)
2) Write the continuous conversion command to the sensor (32 clks).
3) Drive out 16 clks on the SC expecting timing as in fig 7b.
This seems to be working. However, as I read in the first paragraph of the Serial Bus Interface in Section 1.2 of the datasheet I see that "A complete transmit/receive communication will consist of 32 serial clocks." Then, does that mean I need to provide 32 serial clocks to the sensor all the time? Then, I see Figure 7b and I'm led to believe that once the sensor is in continuous conversion it will always send data out on every 16 clocks.
Thanks,
Peter
