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AFE7769: AFE7769QMCLO calibration does not take effect

Cherry Zhou
Mastermind 22235 points
Part Number: AFE7769

Hi team,

Here's an issue from the customer may need your help:

#TxIQMC calibration TxA to FBAB and TxC to FBCD
device.writeReg(0x14,0x04)
device.writeReg(0x108,0x01)
device.writeReg(0x109,0x00)
device.writeReg(0x14,0x00)

#TxIQMC calibration TxB to FBAB and TxD to FBCD
device.writeReg(0x14,0x04)
device.writeReg(0x108,0x01)
device.writeReg(0x109,0x01)
device.writeReg(0x14,0x00)

#No channel connected to FB
device.writeReg(0x14,0x04)
device.writeReg(0x108,0x01)
device.writeReg(0x109,0x02)
device.writeReg(0x14,0x00)

Currently calibration of both TX1 and TX2 is not effective. Verify that register reads and writes are good and feedback channel switching is good.

Could you help check this case? Thanks.

Best Regards,

Cherry

  • 0
    TI__Intellectual 2070 points

    Hi,

    We have been discussing this issue with Hongxin's engineers via wechat in the last few days.  The plan is we will try the txIQMC function using their bringup scripts on the AFE7769EVM this week and see if it works or not.  Base on our test results, we will discuss with customer on how to go about troubleshoot this problem.