Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs
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5.1.3.7. External Memory
The EMAC is integrated with several external memory for different applications. The following technology specific memory modules are added and connected to the data bus, address, and control signals of the XGMAC core:
- RX FIFO – 16 KB RAM to store RX DMA channel data 16
- TX FIFO – 32 KB RAM to store TX DMA channel data16
- TCP/IP Segmentation Offload (TSO) – 512 Bytes RAM to TCP/IP headers on the TX path 17
- Descriptor Cache – 4 KB RAM to store the pre-fetched descriptors of all the DMAs active in the controller 18)
- Gate Control List (GCL) – 2 KB RAM to store GCL on the TX path 19