Hello,
The schematic for the ADS1299 daughterboard (slau443.pdf or http://bit.ly/17xnw89) indicates that CLKSEL is connected to J3:2 via JP23. However, the daughterboard pcb labels J3:1 with "CLKSEL", and a line drawn from the label, to J3:1 (J3:1 having a SQUARE solder hole).
Also, the daughterboard datasheet (slau443.pdf or http://bit.ly/17xnw89) indicates that connecting JP23 in "1-2" configuration sets CLKSEL=0. From the look of the schematic, however, it appears that setting JP23 in "1-2" would set CLKSEL=J3:2_output, and setting JP23 in "2-3" would set CLKSEL=GND=0;
Any help clarifying these matters would be greatly appreciated :) Thanks,
Best,
Jesse
jsalazar1204@gmail.com