I tried to use the measurement chip AD5522 to output a constant 4V voltage。
And I setup all the needed data to the specific regs（as data x1_reg=CCCC, gain m_reg=FFFF, offset c_reg=8000）
But none right output voltage was get. I read back all the regs , which are just as the default config(as x1_reg=8000)
So I doubted that it is a mcu comunication problem. ( QUESTION 1 )
but when i operated in the SWEEPS page as blew, it displayed the right output.
so the communication works just right ???
And in this config, the output is clampped on 1.21V. ( QUESTION 2) Actually the defualt Clamp range is from 0000 to FFFF.
Should i suppose to reload mcu firmware or any other moves ?