Now I am using AFE5804 to design a ultrasound system. Xilinx FPGA is used to control the AFE5804 and deserdes the LVDS signal.
I wonder if anyone here used to design AFE5804 through FPGA. The problem I face now is how to initial the register of AFE5804 correctly . With my code , the data from LVDS is not stable . While power on , it maybe right or not . I doubt there must be something wrong with the initial code. For pressing the reset button , sometimes it can work well through it doesn't work once power on . Additional , My PCB board can't reset itself once power on . The attachment is my initial code of AFE5804.
Any help will be appreciate . Thanks!
I can't see your attachment, but maybe you can tell me what steps you take to initialize the AFE5804. Also, see page 30 of the datasheet, especially the register initialization steps. Are you doing this?
In reply to csmyth:
First of all , thanks for your reply.
For my PCB hardware can't reset the register of AFE5804 , in my program , the first step is using the serial interface, set the S_RST bit high , then reset the S_RST in my code . Then , the other registers are being written by serial interface . And now the phenomenon is the program couldn't work well at the start of power on . But if I press a button at the PCB board which can applying a low-going pulse on the ADS_RESET pin , the program can work well . Is there something wrong with my initial code of AFE5804 ? This program is still making me feel confused. The attachment is my initial code of AFE5804.
Any help will be very appreciated.6710.AFE_INIT.txt
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