Sep 13, 2020
04:45 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Sep 13, 2020
04:45 PM
I started MCAL configuring for TC377 device. I wanted to know what does the below configuration define ?
I understand McuMainOscillatorFrequency defines the XTAL1/XTAL2 oscillator frequency, however what is SysClkFrequency ?
I understand McuMainOscillatorFrequency defines the XTAL1/XTAL2 oscillator frequency, however what is SysClkFrequency ?
- Tags:
- aurix tc37x
- IFX
2 Replies
Sep 13, 2020
07:57 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Sep 13, 2020
07:57 PM
See 10.8 Clock Generation Unit in the User Manual, and SYSPLLCON0.INSEL: it's possible to use the SYSCLK input to drive the System PLL and Peripheral PLL.
Most applications use a crystal on XTAL1/XTAL2, or an External Input Clock on XTAL1, instead of using SYSCLK. For those, you'd use McuMainOscillatorFrequency.
Most applications use a crystal on XTAL1/XTAL2, or an External Input Clock on XTAL1, instead of using SYSCLK. For those, you'd use McuMainOscillatorFrequency.
Sep 14, 2020
09:52 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Sep 14, 2020
09:52 AM
Ok thanks, this makes sense.
I was completely thrown off by section 10.3 - Clock Sources.Section 10.3 talks about Oscillator and Back-Up Clock source, but does not mention anything about SYSCLK.
I am not sure if we can raise a request to modify the Reference manual. Probably add a small section 10.3.3 to talk something about SYSCLK, this could have saved a lot of time (at least for me).
I was completely thrown off by section 10.3 - Clock Sources.Section 10.3 talks about Oscillator and Back-Up Clock source, but does not mention anything about SYSCLK.
I am not sure if we can raise a request to modify the Reference manual. Probably add a small section 10.3.3 to talk something about SYSCLK, this could have saved a lot of time (at least for me).