RapidIO Intel FPGA IP User Guide

ID 683884
Date 9/15/2021
Public
Document Table of Contents

3.1.2. Data Settings

Data Settings set the Baud rate, Reference clock frequency, Receive buffer size, and Transmit buffer size.

Baud Rate

Baud rate defines the baud rate based on the value that you specify. A device family may include devices at speed grades that do not support all the indicated baud rates. The speed grade tables in this user guide provide information about the speed grades supported for each device family, RapidIO mode, and baud rate combination.

Reference Clock Frequency

Reference clock frequency defines the frequency of the reference clock for your RapidIO IP core internal transceiver. The RapidIO parameter editor allows you to select any frequency supported by the transceiver.

Receive Buffer Size

Receive buffer size defines the receive buffer size in KBytes based on the value that you specify. You can select a receive buffer size of 4, 8, 16, or 32 KBytes.

This parameter is not available for variations that target an Intel® Arria® 10 and Intel® Cyclone® 10 GX devices. RapidIO IP core Intel® Arria® 10 and Intel® Cyclone® 10 GX variations have a Physical layer receive buffer size of 32 KBytes.

Transmit Buffer Size

Transmit buffer size defines the transmit buffer size in KBytes based on the value that you specify. You can select a transmit buffer size of 4, 8, 16, or 32 KBytes.

This parameter is not available for variations that target an Intel® Arria® 10 and Intel® Cyclone® 10 GX devices. RapidIO IP core Intel® Arria® 10 and Intel® Cyclone® 10 GX variations have a Physical layer transmit buffer size of 32 KBytes.

Note: Buffers are implemented in embedded RAM blocks. Depending on the size of the device used, the maximum buffer size may be limited by the number of available RAM blocks.