LTC2387-16 / ADAQ23875 two lane mode cnv signal polarity

Question

Hi, 
 I am working on a small proof of concept project using ADAQ23875 eval board + zedboard (connected over FMC). 
 For the data acquisition the axi_ltc23875 ip core is used (from demo project cn0577) 
 The data transfer somehow buggy and the transferred test pattern is 0x30fc, which is actually a 2 bit shifted 0xcc3f (the right pattern according the datasheet). 
 I have been spent lot of time do far, for adjusting the timing parameters without any success. 
 The only interesting point that is fount that the CNV+/- signal should have a opposite polarity (?!) in the two lane mode (ADAQ23875 datasheet, page 21), 
 but I couldn't find any detailed information on this topic. 
 Could you guys confirm that the datasheet is OK, and the CNV signal should have opposite polarity in the two-lane mode? 
 Thanks, 
 Best Regards, Szil&aacute;rd

iulia · Accepted Answer

Could you please try with the project from this branch? 
 Then run "make RES=16" in order to build the project. It will create a folder called RES16 and there is the Vivado project. 
 And in your No-OS app, set your PWM_REG_PULSE_1_OFFSET to 1. 
 Best regards, Iulia)

Partner Forums

Partner Libraries

Products Mentioned

LTC2387-16 / ADAQ23875 two lane mode cnv signal polarity