LMH0318: EOM Data

Hi Rajender,

I reviewed your data and confirmed that this does not match the expected result from the EOM.

Are you able to share the sequence you are using for capturing the EOM data?  Please note that the LMH0318 programming guide has a sequence for capturing EOM data.

Attached is sample data.  Note that 1 64x64 array has been "duplicated" in order to show 2UI of data (128x64) in the data.

LMH0318_Eye_Data.xlsx

Please note that the video below has information about how the eye capture works.

https://www.ti.com/video/5797181755001#transcript-tab

Thanks,

Drew

Hi Drew,

Thank you for your reply,

here is the sequence i am using for capturing EOM data

lmh_write_spi_data(_CHANNEL_CONTROL, 0x04); // select Channel register
lmh_write_spi_data(_EOM_VRANGE, 0x00); //enable EOM
lmh_write_spi_data(_EOM_CNTL, 0x80); //Start fast EOM
check_status_EOM_CNTL(); //wait until EOM Sample ready
lmh_read_spi_data(_EOM_LSB); // Read 0x26 and discard the content
check_status_EOM_CNTL(); //wait until EOM Sample ready
lmh_read_spi_data(_EOM_LSB); //read register 0x26

/*Executing below command for about 4095 times */
for (int x = 0; x < 64; x++) {
for (int y = 0; y < 64; y++) {
check_status_EOM_CNTL(); //wait until EOM Sample ready
value[x][y] = (((lmh_read_spi_data(_EOM_MSB) << 8) & 0xFF00) | (lmh_read_spi_data(_EOM_LSB) & 0xFF)); //save number of eye hits
}
}

lmh_write_spi_data(0x24, 0); //Disable Fast EOM
lmh_write_spi_data(0x11, 0x20); //Power Down EOM

Thanks, and regards

Hi Rajender,

Thanks for sharing. We are reviewing this sequence and will get back to you with feedback.

Thanks,
Drew