Arria® V Device Handbook: Volume 2: Transceivers

ID 683573
Date 5/29/2020
Public
Document Table of Contents

5.1.1. Custom Configuration Channel Options

There are multiple channel options when you use Custom Configuration.

The supported interface width varies depending on the usage of the byte serializer/deserializer (SERDES), and the 8B/10B encoder or decoder. The byte serializer or deserializer is assumed to be enabled. Otherwise, the maximum data rate supported is half of the specified value.

The maximum supported data rate varies depending on the customization.

Table 70.  Maximum Supported Data Rate for Fastest Speed Grade Device (–4 Commercial) in Custom ConfigurationThe following table lists an example of the maximum supported data rate in various custom configurations with the PMA and PCS using the fastest speed grade device.
Data Configuration PMA-PCS Interface Width PCS-FPGA Fabric Interface Width Maximum Data Rate (Mbps)
8B/10B Enabled 8B/10B Disabled
Single-width 8 8 1,500
16 3,000
10 8 10 1,875
16 20 3,750
Double-width 16 16 2,621.44
32 5,242.88
20 16 20 3,276.8
32 40 6,553.6

In all the supported configuration options of the channel, the transmitter bit-slip function is optional, where:

  • The blocks shown as “Disabled” are not used but incur latency.
  • The blocks shown as “Bypassed” are not used and do not incur any latency.
  • The transmitter bit-slip is disabled.
Figure 134. Configuration Options for Custom Single-Width Mode (8-bit PMA–PCS Interface Width)


Figure 135. Configuration Options for Custom Single-Width Mode (10-bit PMA–PCS Interface Width)


Figure 136. Configuration Options for Custom Double-Width Mode (16-bit PMA–PCS Interface Width)


Figure 137. Configuration Options for Custom Double-Width Mode (20-bit PMA–PCS Interface Width)