ADS1256 Timing

Hi Cafain,

To answer your questions:

cafain said:

1) Sends a command to the DIN-pin, do you read the conversion data from the same time DOUT?

Sending an SPI command while clocking out the data could terminate the data read out. I recommend keeping DIN low while reading data, as shown in figure 30 or 31 of the data sheet.

cafain said:

2) When operating in the timing of Figure19,   

  Timing of MUX is actually switched is, What time?  

   (Is it switched Once out the last of SCLK of the last data byte)

I don't know exactly when the MUX switches. It should switch on the last SCLK (as you mentioned), or very soon thereafter.

IMPORTANT NOTE: There is a t11 delay required after every WREG command of 4 f_CLKIN periods. (It is very likely that WREG commands will take affect during this period).

cafain said:

3) When making it operate in the timing of Figure19,   

    It is front conversion data (MUX = 01h).   

    Is it necessary by which timing to read?   (The timing by which conversion data is updated is ?)

Cycling the input multiplexer (as shown in figure 19), is done using the RDATA command. The data update timing will depend on the filter settling time. Refer to Table 14 for a list of how long it takes to settle for each data rate.

Best Regards,
Chris