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AFE5816: AFE5816 configuring

jianguo zhu
Prodigy 170 points
Part Number: AFE5816

Dears,
1、I use AFE5816 in B Ultrasound machine.Now I have troubles when configuing the device.When I configured AFE5816 in Internal non-uniform mode, if the sequence were right?
a、Enter DTGC，configue Global Register的DTGC_WR_EN register;
b、Select DTGC Register'MEM_BANK_SEL register;
c、Configure 1-160 address registers in DTGC register;
d、Afer configure four kinds of Profile,than select appropriate curve,according to Figure76.
When I configured to c,the ADC worked wrong,what's wrong?

2、If the differences about sum of gain about AFE5816 between Low-Noise and Low-power are maximum 46db in Low-Noise and maximum 52db in Low-Power?

3、I configured AFE5816 successfully in Programmable fixed-gain,but imaging between 0.3-0.9cm is black,I thought the part was not blown up,why?

  • 0
    TI__Mastermind 49146 points
    Hello Jianguo,

    Can you please provide your register configuration?
    What is the ADC clock frequency?
    Can you please elaborate more on what you mean by ADC worked wrong?
  • 0 in reply to Praveen Aroul
    Prodigy 170 points
    Hello Praveen,

    The clock frequency of ADC is 40MHZ.If my configuration according to the sequence as below is right,especially selecting memory and writing 160 datas of MEM_WORD?

    1.Global Register --> address 0x00 parameter 0x0000
    2.ADC Register --> address 0x01 parameter 0x0014
    address 0x04 parameter 0x0010
    3.VCA Register --> address 0xCE parameter 0x4000 （medium-power）
    address 0xE6 parameter 0x001F

    4.Global Register --> address 0x00 parameter 0x0010

    5.DTGC Register --> address 0xB6 parameter 0xC000 || 0x0800 （As Internal non-uniform mode, MODE_SEL = 11，select register of PROFILE, PROFILE_EXT_DIS= 1）
    --> address 0xB5 parameter 0x8000 （SLOPE_FAC）
    -->address 0x01~0xA0，assigning in Memroy
    -->address 0xA1~0xA5, assigning and defining Profile

    I configured AFE5816 successfully in Programmable fixed-gain, but it was a failure when configuring Internal non-uniform mode.

    Thank you!
  • 0 in reply to jianguo zhu
    TI__Mastermind 49146 points
    Hello Jianguo,

    We are looking into your configuration register details.
    Can you also provide the configuration memory words that you are programming and the profile words?
  • 0 in reply to Praveen Aroul
    Prodigy 170 points
    Dear

    All memory words are 0x000D.
    We use the mode of Up-Dn.When congigured the sequence as below,it didn't work.According to datasheet,the gain of begging is
    26dB,but after congigured AFE5816 as below,the imaging was unchanged.
    (0x00, 0x0010);
    (0xB6，0x4000 || 0x0800 || 0x0000);

    (0xA1, 0x5000 || 0x009F);

    (0xA2, 0x0D00 || 0x000D) ;

    Thank you！
  • 0 in reply to Praveen Aroul
    Prodigy 170 points
    Dear，

    The end product is color ultrasound machine,MP in Q3,2017,but asap.The forecast for AFE5816 is least 3K/Year.
  • 0 in reply to jianguo zhu
    TI__Expert 4145 points
    Moved offline.

    Sincerely,
    Olu