128 Message Objects in DCAN but only 64 in Halcogen

Akshay Immanuel

Other Parts Discussed in Thread: HALCOGEN

The TRM for RM57 states that there are 128 message objects but Halcogen shows only 64 Message objects that can be configured.

What do yo mean by 128 message objects?

over 9 years ago

0 Charles Tsai over 9 years ago

TI__Guru**** 183476 points

Hello Akshay,

Please refer to the respective device datasheet for the actual implementation of each peripherals. The RM57 datasheet specifies 64 mailboxes for each DCAN module, not 128. The TRM describes the maximum configuration the DCAN module can theoretically support.

0 Akshay Immanuel over 9 years ago in reply to Charles Tsai

Expert 1160 points

Section 26.5.2 of TRM of RM57(Addressing message objects in RAM) states max is 64.Section 26.17.14 of TRM of RM57(transmission request 56,78 registers) offers configuration of msg objects upto 128

0 Charles Tsai over 9 years ago in reply to Akshay Immanuel

TI__Guru**** 183476 points

Hi Akshay,

Yes, the TRM tries to specify the superset implementation of the DCAN module. There is a such note at the beginning of the DCAN chapter in the TRM.

NOTE: This chapter describes a superset implementation of the DCAN module. Consult your

device-specific datasheet to identify the applicability of the DMA-related features, the number

of instantiations of the DCAN IP, and the number of mailboxes supported on your specific

device being used.

0 Akshay Immanuel over 9 years ago in reply to Charles Tsai

Expert 1160 points

Thanks Charles :)

Arm-based microcontrollers

Arm-based microcontrollers forum

128 Message Objects in DCAN but only 64 in Halcogen