OpenCPI Endpoint for DMA IP Specification

The following is a specification for the OpenCPI Endpoint for DMA (OPED)

Reference Documentation

Standard Interfaces for NetFPGA-10G Platform IP

Interfaces

Control and Status

Data Path Interfaces

Egress Data Path Interface

The egress interface is for carrying packets heading to the PCIe bus.

In the language of data path interfaces, it has the following specification:

Channel Name

Configuration

DAT

C_DAT_DATA_WIDTH = 256

LEN

consumer, C_LEN_DATA_WIDTH = 16

SPT

not consumer, C_SPT_DATA_WIDTH = 8

DPT

consumer, C_DPT_DATA_WIDTH = 8

ERR

not consumer

Ingress Data Path Interface

The ingress interface is for carrying packets coming from the PCIe bus.

In the language of data path interfaces, it has the following specification:

Channel Name

Configuration

DAT

C_DAT_DATA_WIDTH = 256

LEN

active producer, C_LEN_DATA_WIDTH = 16

SPT

active producer, C_SPT_DATA_WIDTH = 8

DPT

grounded

ERR

grounded