cybl10563 clock

[songzaiwu]

Can the cpu frequency only use the internal low precision clock? Can the external crystal oscillator only be used for the Bluetooth module?

[Ekta_N · Accepted solution]

Hello @songzaiwu 

For the cybl10563  device, the external crystal oscillator is used to clock the BLE Subsystem. But there is also a provision to use the ECO as SYSTEM or HFCLK. The configuration below sets ECO as the source of HFCLK and EXTCLK:

ILO or Internal low precision clock is used to clock the system in Deep sleep mode. This is because IMO is not available in deep sleep mode. 

Best Regards
Ekta