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LMH1218: pfd_sel0_data_mux[2:0] changes automatically if he programs mr_drv_out_ctrl[1:0]

Guru 29690 points
Part Number: LMH1218

Hi Team,

My customer found pfd_sel0_data_mux[2:0] changes automatically if he programs mr_drv_out_ctrl[1:0].
For example, he confirmed it as the following sequence.
1) Read Reg 0x1C -> 0x98
2) Write Reg 0x1C -> 0x90
3) Read Reg 0x1C -> 0x10


Is it a normal function of LMH1218?

Best Regards,
Yaita