ADAR1000 DEV_CONFIG REGISTER

Hello, 

I am wondering the DEV_CONFIG register and its bits. We could not understand its DEV STATUS, CUST_OPERATING MODE and NORM_OPERATING_MODE bits in the datasheet. 

Can you give me more details about these register and missions?

Thank you.

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  • 0
    •  Analog Employees 
    on Oct 7, 2019 4:06 PM over 1 year ago in reply to ozden.erdinc

    I was slightly incorrect: this register is non-operational for the ADAR1000. 

    Register 0x02 is a part of the first 16 registers: 0x00 through 0x0F, that is ADI standard SPI for all parts using SPI.  For parts that support this register:

    • NORM_OPERATING_MODE controls a normal (full performance) mode (00), a reduced power mode (01), a standby mode (10), and a sleep mode (11).  What these mode do and how much power is reduced is up to the design and is chip specific.
    • CUST_OPERATING_MODE are 4 potential addition modes that can be used to augment the mode outlined above.
    • The DEV_STATUS bits are device dependent and can be used to flag fault conditions, PLL lock status, reset status, etc. 

    Again to be clear, if you write to this register on the ADAR1000, it will not do anything.  I would treat it like it is non-existent.

  • We are planning to use the DEV_STATUS bits to check whether the device is operational or malfunctioned or not. So, we are going to read that register. I want to know how DEV_STATUS bits response to the status of ADAR1000 chip. 

  • +1
    •  Analog Employees 
    on Oct 8, 2019 3:38 PM over 1 year ago in reply to ozden.erdinc

    The ADAR1000 does not support the DEV_STATUS register and thus the this register does not control or sense anything inside the ADAR1000.  The only thing it could be used for is to check if the DEV_STATUS's default value of 0x10 is correct.  This is more of a single register SPI functionality check; it does not indicate whether the rest of the SPI or the RF blocks are functional.   

    The better way to indicate whether the ADAR1000 is operational or not is to monitor the current draw on the +3.3V supply.

  • Thank you for your reply. We will use that information.