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PSoC™ 4 Forum Discussions

songzaiwu
Level 2
10 questions asked 25 sign-ins 10 replies posted
Level 2

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

QQ截图20220808101809.png

 

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Ekta
Moderator
Moderator 250 solutions authored 100 likes received 250 sign-ins
Moderator

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:

Ekta_0-1660040695142.png

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

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Ekta
Moderator
Moderator 250 solutions authored 100 likes received 250 sign-ins
Moderator

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:

Ekta_0-1660040695142.png

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

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