FDC2212: output has delay

Kaitlyn,

Thank you for the post and your interest in TI products.
And thank you for the detailed information on how you have configured the FDC2212.

I will look over what you have provided and update this thread tomorrow.

Regards,
John

Kaitlyn,

I am still looking into into your question, and I have a few as well:

1. Are you using a single-ended or differential sensor?
2. What is your sensor frequency?
3. What is your MUX_CONFIG.DEGLITCH setting?
4. Just to confirm: you are setting your ref divider to one, so your fref is 40MHz?

Hello John

Thank you for your reply, and the configuration is as following:

single channel configuration ：
CONFIG = 0x3E01; 

FMUX_CONFIG_REG= 0x20C ； 
CLOCK_DIVIDERS_CH0_REG = 0x2002；

ERROR_CONFIG_REG = 0x3821；
current :21<<11；(note:21 refers to the 21th value of the current register)

CH0_RECOUNT = 1024；acording to the equation  t = （CH0_RCOUNTx16）/f  and get to CH0_RCOUNT = 1250
CH0_SETTLECOUNT = 100；

multi-channel configuration ：（actually I only read the channel 0 data , and don't need channel 1 data）
CH0_RECOUNT = 1024；
CH0_SETTLECOUNT = 100；
RCOUNT_CH1_REG = 258
SETTLECOUNT_CH1_REG = 10

FMUX_CONFIG_REG= 0x820C ；
CONFIG = 0x3E01；

CLOCK_DIVIDERS_CH0_REG = 0x2001；
CLOCK_DIVIDERS_CH1_REG = 0x2001；
ERROR_CONFIG_REG = 0x3821；

current0 :21<<11；
current1 :21<<11；
the above situation both have 25ms delay.

Best regards

Kailyn 

Kaitlyn,

Thank you for the additional details. I will review them and update this thread by COB tomorrow.

Regards,
John

Kailyn,

Thanks again for posting the device settings.
I am reviewing them, and don't yet have any updates, but I do have a question:
Is the delay still 25ms if the device is not put in Sleep Mode?

Regards,
John