Channel Rx descriptor ring length register
| RDRL | Receive Descriptor Ring Length This register sets the maximum number of Rx descriptors in the circular descriptor ring. The maximum number of descriptors is limited to 1K descriptors. For example, you can program any value up to 0x3FF in this field. This field is 10-bit wide. If you program 0x3FF, you can have 1024 descriptors. If you want to have 10 descriptors, program it to a value of 0x9. |
| ARBS | Alternate Receive Buffer Size Indicates size in bytes for Buffer 1 when ARBS[7:0] is programmed to a non-zero value. When ARBS[7:0] = 0, Rx Buffer1 and Rx Buffer2 sizes are based on RBSZ[13:0] field of Channel receive control register (ETH_DMACRXCR). |