how does lpc4337 work when XTAL_OSC_CTRL register BYPASS bit set 0 ?

[jent]

hello,master

how does lpc4337 work when XTAL_OSC_CTRL register BYPASS bit set 0  and XTAL1 connect with active oscillator, XTAL2 unconnected? Now the cpu  works normally in this case. 

                   bestwishes

                    jent

[Harry_Zhang]

Hi @jent 

 It can “work” with BYPASS = 0 because the amplifier is being driven.

It’s better and safer to set BYPASS = 1 when using an external clock on XTAL1 and leaving XTAL2 open.

BR

Harry