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C6748中upp以及缓存使用问题请教



尊敬的工程师您好:

请问当UPP接收到数据之后(数据量较大640KBYTE),写一句

CacheInv( (unsigned int)upp_buffer_a, upp_frame_size*sizeof(short));其中upp_frame_size为320000 ,这样写一下够吗,会不会数据量太大造成数据不一定正确呢??需不需要分批写CacheInv呢,如果是的话,该怎么写