SYNC_REG
nsp32_write1(base, SYNC_REG, 0);
nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH),
printk("syncreg=0x%x, ", nsp32_read1(base, SYNC_REG));