LMH1983: PLL1 Charge Pump register

Arnaud Dubois

Part Number: LMH1983

Hi all,

I would like to change the value of the PLL1 Charge Pump register (0x28 in the register map) but I have the impression that the read back value always remains at b010000 which is the default value. However, I can modify the PLL1 FastLock Charge Pump register (0x27 in the register map) or the PLL1 Advanced Control register (0x25 in the register map) so I'm confident about my access mechanism to the registers (read and write).

Is there any particular manipulation that needs to be done to modify this particular register?

Thank you for your help !

Regards,

Arnaud

over 6 years ago

0 Alan O over 6 years ago

TI__Mastermind 32575 points

Like other PLL1 register settings, the PLL1 charge pump register is preset by the auto format detect logic based on the detected input format when the EN_AFD bit is set. To override this register, clear the EN_AFD bit first.

Alan

0 Arnaud Dubois over 6 years ago in reply to Alan O

Prodigy 30 points

It works :) Thank you !

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LMH1983: PLL1 Charge Pump register