I'm trying to make sure I have it wired up properly, because I am seeing very odd outputs from my DOUT (MISO) pin and I think it may be connected to my wiring. On a rare occasion I get a good set of pulses, but sometimes I get a pulse or two (more often none) and then it goes high and slowly trickles down.. but not nice and smooth like a capacitor discharging, its rough and jagged.. almost like slanted steps, or sometimes it looks like there are pulses in there, but very small.
Here is my wiring:
SCLK -> SCLK
CS -> SS
MCLKIN -> CMOS CLK @ 12MHz
MCLKOUT -> OPEN
RESET -> 5V
AVdd -> 5V
AINCOMM/P0 -> OPEN (IS THIS CORRECT?)
SYNC/P1 -> OPEN (IS THIS CORRECT?)
AIN0-7 -> OPEN EXCEPT AIN7 CONNECTED TO SIGNAL
MUXOUT(+) -> ADCIN(+)
MUXOUT(-) -> ADCIN(-)
REFIN(+) -> 2.5V (WELL 2.38V, I'm driving it from a 5V source with a resistor divider but its consuming a lot of current so I had to adjust from using 100kohms to 1kohms.. don't know if this could be part of the problem, datasheet states it only consumes 400uA?)
AGND -> GND
RDY -> ISR triggered on an inverted rising edge
DOUT -> MISO
DIN -> MOSI
DVdd -> 5V
DGNG -> GND
are these correct? I used this datasheet to wire it up:
I really need this working.. it almost seems as if I have either not connected something properly, or my MCU is messing up.. but I don't think thats the case since its worked fine until now.
Also the RDY signal seems to work when its supposed to.
Update: added o-scope pictures and tried tying P1 both high and low with same result.