The CFR can be addressed in bytes. The host has only quadlet write/read access to the CFR. To write to a byte/doublet requires a quadlet write. To read a byte/doublet requires a quadlet read.
CFR可以按字节寻址，主机只能按4字节读写CFR，写一个字节/字的话需要一次4字节的写。。。。
大概意思是不是这样？应该怎么理解那？
