FAQs
English (US) 日本語 | Japanese 中文 | Chinese (Simplified)

Difference between RX MASK REGISTERS

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Difference between RX MASK REGISTERS

‎07-07-2015 10:28 PM
873 Views
natarajmani
Contributor III

hi friends,

i am learning about Flexcan module from Mpc5674f  ref manual..i have seen global mask is used as acceptance mask for all Rx MBs, excluding MBs 14–15. and.individual mask is used as.acceptance mask for the Identifier in Message Buffer 14 & 15..why they have separated ..what is reason to separate 14 & 15 only..what is difference between RX 15 ,14 MASK ,RX GLOBAL MASK ,RX INDIVIDUAL MASK REGISTERS..

Labels (1)
Labels
0 Kudos
Reply
1 Reply

‎07-09-2015 06:15 AM
565 Views
lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

there are two modes. In one mode (MBFEN = 1) every message buffer has capability of individual masking. In legacy mode mode (MBFEN = 0) global masking is used and there are additional individual masks RX14 and RX15. There's nothing special about the individual masks. It just extends the capabilities for masking. For example, global mask can accept certain range of IDs while RX14 and RX15 can be used for some special ones outside the range of global mask.

Regards,

Lukas

Reply