对68013A采用slavefifo方式进行bulk读写操作，用EP2做in端点，1024字节，2从缓冲；用EP6做OUT端点，512字节，4从缓冲-68013A conducted on the use of slavefifo bulk reads and writes to do in endpoint with EP2, 1024 bytes, 2 from the buffer　do with EP6 OUT endpoints, 512 bytes, 4 from the buffer