6 microwire transmit data size (mwds), 7 transmit fifo interrupt/dma threshold (tft), 8 receive fifo interrupt/dma threshold (rft) – Intel PXA255 User Manual

6 microwire transmit data size (mwds), 7 transmit fifo interrupt/dma threshold (tft), 8 receive fifo interrupt/dma threshold (rft) | Intel PXA255 User Manual | Page 322 / 598