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ADS54J66: Issue with Configuration of ADC in custom board

Jonathan Geronga
Expert 7930 points
Part Number: ADS54J66

Hi Team,

I am posting this on behalf of our customer for the Issue with the Configuration of ADC in the custom board

0000  81 //analog reset
0011  80 //select master page
0053  80 //divide by 2

 

4003  00
4004  68
60F7  01 //self clearing top reset
70F7  01
6000  01 //digital reset

6000  00
7000  01
7000  00

 

4003  00
4004  69
6000  80 //ctrl k
6006  1F //k 32
7000  80
7006  1F

 

4003  00
4004  6A
6016  02 //pll mode 40x
7016  02

 

4004  61
4003  41
6000  08 //ddc mode 8
7000  08

 After configuring the ADC, registers 6068 and 7068 from page 6100 read 0x18. They should read 0x00. 

What could be the reason for this?

Thanks,

Jonathan

  • 0
    TI__Guru* 91947 points

    Jonathan,

    Bits 0 and 3-7 are write only. The read value will be unknown for these bits.

    You must write "0" to these bits per the register map in the data sheet if you do write to this register.

    Regards,

    Jim