RXPBUFSIZE=SIZE0
DMA Configuration Register
| AMBABRSTLEN | Selects the burst length to use on the AMBA (AHB) when transferring frame data. | 
| HDRDATASPLITEN | Enable header data Splitting. | 
| RXPBUFSIZE | Receiver packet buffer memory size select. 0 (SIZE0): Do not use top three address bits (0.5 Kb) 1 (SIZE1): Do not use top two address bits (1 Kb) 2 (SIZE2): Do not use top address bit (2 Kb) 3 (SIZE3): Use full configured addressable space (4 Kb) | 
| TXPBUFSIZE | Transmitter packet buffer memory size select. | 
| TXPBUFTCPEN | Transmitter IP, TCP and UDP checksum generation offload enable | 
| INFLASTDBUFSIZEEN | Forces the DMA | 
| RXBUFSIZE | DMA receive buffer size in external AMBA (AHB) system memory. | 
| FRCDISCARDONERR | Auto Discard RX pkts during lack of resource. | 
| FRCMAXAMBABRSTRX | Force max length bursts on RX. | 
| FRCMAXAMBABRSTTX | Force max length bursts on TX. | 
| RXBDEXTNDMODEEN | Enable RX extended BD mode. | 
| TXBDEXTENDMODEEN | Enable TX extended BD mode. |