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Clock Polarity and Phase

berney montavon
Prodigy 50 points
Other Parts Discussed in Thread: ADS1258

According to this post from Tony,

http://e2e.ti.com/support/data_converters/precision_data_converters/f/73/t/71965.aspx

Reading back the CONFIG0 register after writing 0x40 should read back 0x0A on DOUT.  Why would it not read the value (0x40) that was written?

  • 0
    TI__Guru**** 181521 points

    Hi Berney,

    Take a look at Table 14 on page 35 of the ADS1258 data sheet.  The minimum "Register Read' command byte is 0x40 - that gets you data back from CONFIG0 which is at address 0x00.  The default value of CONFIG0 is 0x0A (Table 15, page 36).