3 Replies Latest reply on Nov 28, 2016 12:33 AM by vsrs

    Mapping of op amp pins

    jim_reich_1873026

      Hi, all. I'm trying to figure out the mapping of the CTBm0 and CTBm1 opamp banks on a CYBLE-214015 (also looking at CYBLE-224110 for comparison). Datasheets for these are at http://www.cypress.com/file/320226/download and http://www.cypress.com/file/230681/download respectively.

         

      But when I compare those 
      with the datasheet for the 4xx8 BLE family (http://www.cypress.com/file/175646/download) the mappings are entirely different-- not in terms of physical pins, but in terms of port/pin names like p2.4.

         

      For example, on the 214015, p2.1-p2.5 are all CTBm1 pins, and are actually duplicate signals to what's on other pins. But in the 4xx8 BLE family datasheet, p2.x are all CTBm0 pins. 

         

      In the meanwhile, the 224110 datasheet has p2.2, p2.3 and p2.6 as CTBm1 pins and 2.1, 2.4, 2.5 as CTBm0 pins.

         

      And then in Creator, they are not split up into two sets of opamp m0 and m1, but instead are labeled opamps 0-3. There, it does look like the p2.x pins are all connected to one pair of opamps while the other bank is p1.x.

         

      I can eventually figure this out experimentally, but someone out there must already have encountered this...