What is the initial value of the AD7864 channel select register?
The customer has not set the logical state of DB0 from DB3. (From the beginning, RD and CS are set low and WR is set high).
Since the logic from DB3 to DB0 has not been set, I thought that the conversion sequence was undecided.
However, we will confirm it because the customer told us that Logic High was detected.
I need to do some research on this to be sure-I'll get back to you.
Thank you very much for addressing this issue.
Please let me know as soon as I know the progress of this issue.
I have not received confirmation as to the state of the registers on start up. At this point I would recommend assuming that the device could potentially come up in a random state and that initializing the internal registers to a known value is a safer approach.
Thank you for your reply.
Prompt the customer to initialize internal registers to a known value.
Thank you very much.
Your welcome - this part is not my area of expertise but I'm glad to be of assistance!