Clock generation in CAN bus devices

[rknispel]

I am looking for details of the clock generation in UJA1169ATK/F:

• clock source
• PLL
• Jitter in 13 bit interval of CAN communications

Is there a technology papaer where it can be derived from?

[rknispel · Accepted solution]

The question was transferred into a service case and resolved there.

[guoweisun]

What kinds of clock detail information do you need?

[rknispel]

My questionnaire is about details of the Automotive qualification of the CAN communications of UJA1169ATK/F:

CAN network clock source
PLL frequency [MHz]
max. PLL jitter in 13 bit interval
oscillator manufacturer
oscillator part name
oscillator frequency [MHz]
oscillator tolerance [%]

Possible answers include clock recovery from CANH/CANL lines, and the oscillator would be MCU oscillator.

[guoweisun]

These parameters should be checked or setting in CAN controller side,right?UJA1169 is CAN transceiver.

[rknispel]

The parameters are relevant for reliabilty of CAN communications in on-board network as Automotive application. UJA1169 is considered for SBC of such a component.

Typically the internal clock is generated from TXD by clock recovery. I am looking for more details on this process!

Help is very much appreciated and thanks for any hints in advance!

[rknispel]

The data sheet says "microcontrollerindependent clock source" is present on the chip, but where can further details be taken from?