TMS320F28377D: 关于F2837x手册上的问题

请问一下，在F2837x手册22.4.1中提到"After
setup and subsequent transfer of message object from interface registers to message RAM, the
acceptance filtering will be applied to it when the modified message object number is same or smaller than
the previously found message object. This assures data consistency even when changing message
objects; for example, while there is a pending CAN frame reception."
这句话没太理解，为什么在正常工作期间，通过IFx继续修改message object，会和message object number优先级，以及acceptance filtering接收过滤有关系？

Susan Yang：

https://e2echina.ti.com/support/microcontrollers/c2000/f/c2000-microcontrollers-forum/203901/re-tms320f28379d-f2837x-can-if1-if2