LDMA_REQ_INVALID
status = LDMA_REQ_INVALID;
status = LDMA_REQ_INVALID;
status = LDMA_REQ_INVALID;
status = LDMA_REQ_INVALID;
status = LDMA_REQ_INVALID;
(status == LDMA_REQ_INVALID)? LDMA_MSGERR_INVALID :